1115 lines
55 KiB
Go
1115 lines
55 KiB
Go
// Copyright 2023 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package tests
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import (
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"context"
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"fmt"
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"strconv"
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"testing"
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"github.com/pingcap/tidb/pkg/bindinfo"
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"github.com/pingcap/tidb/pkg/bindinfo/internal"
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"github.com/pingcap/tidb/pkg/bindinfo/norm"
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"github.com/pingcap/tidb/pkg/domain"
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"github.com/pingcap/tidb/pkg/parser"
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"github.com/pingcap/tidb/pkg/parser/model"
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"github.com/pingcap/tidb/pkg/parser/terror"
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"github.com/pingcap/tidb/pkg/testkit"
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"github.com/pingcap/tidb/pkg/util"
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utilparser "github.com/pingcap/tidb/pkg/util/parser"
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"github.com/pingcap/tidb/pkg/util/stmtsummary"
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"github.com/stretchr/testify/require"
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)
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func TestPrepareCacheWithBinding(t *testing.T) {
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store := testkit.CreateMockStore(t)
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tk := testkit.NewTestKit(t, store)
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tk.MustExec(`set tidb_enable_prepared_plan_cache=1`)
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tk.MustExec("set tidb_cost_model_version=2")
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tk.MustExec("use test")
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tk.MustExec("drop table if exists t1, t2")
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tk.MustExec("create table t1(a int, b int, c int, key idx_b(b), key idx_c(c))")
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tk.MustExec("create table t2(a int, b int, c int, key idx_b(b), key idx_c(c))")
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// TestDMLSQLBind
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tk.MustExec("prepare stmt1 from 'delete from t1 where b = 1 and c > 1';")
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tk.MustExec("execute stmt1;")
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require.Equal(t, "t1:idx_b", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
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tkProcess := tk.Session().ShowProcess()
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ps := []*util.ProcessInfo{tkProcess}
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tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
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res := tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
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require.True(t, tk.MustUseIndex4ExplainFor(res, "idx_b(b)"), res.Rows())
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tk.MustExec("execute stmt1;")
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tk.MustQuery("select @@last_plan_from_cache").Check(testkit.Rows("1"))
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tk.MustExec("create global binding for delete from t1 where b = 1 and c > 1 using delete /*+ use_index(t1,idx_c) */ from t1 where b = 1 and c > 1")
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tk.MustExec("execute stmt1;")
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require.Equal(t, "t1:idx_c", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
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tkProcess = tk.Session().ShowProcess()
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ps = []*util.ProcessInfo{tkProcess}
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tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
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res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
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require.True(t, tk.MustUseIndex4ExplainFor(res, "idx_c(c)"), res.Rows())
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tk.MustExec("prepare stmt2 from 'delete t1, t2 from t1 inner join t2 on t1.b = t2.b';")
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tk.MustExec("execute stmt2;")
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tkProcess = tk.Session().ShowProcess()
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ps = []*util.ProcessInfo{tkProcess}
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tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
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res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
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require.True(t, tk.HasPlan4ExplainFor(res, "HashJoin"), res.Rows())
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tk.MustExec("execute stmt2;")
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tk.MustQuery("select @@last_plan_from_cache").Check(testkit.Rows("1"))
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tk.MustExec("create global binding for delete t1, t2 from t1 inner join t2 on t1.b = t2.b using delete /*+ inl_join(t1) */ t1, t2 from t1 inner join t2 on t1.b = t2.b")
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tk.MustExec("execute stmt2;")
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tkProcess = tk.Session().ShowProcess()
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ps = []*util.ProcessInfo{tkProcess}
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tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
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res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
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require.True(t, tk.HasPlan4ExplainFor(res, "IndexJoin"), res.Rows())
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tk.MustExec("prepare stmt3 from 'update t1 set a = 1 where b = 1 and c > 1';")
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tk.MustExec("execute stmt3;")
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require.Equal(t, "t1:idx_b", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
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tkProcess = tk.Session().ShowProcess()
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ps = []*util.ProcessInfo{tkProcess}
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tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
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res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
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require.True(t, tk.MustUseIndex4ExplainFor(res, "idx_b(b)"), res.Rows())
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tk.MustExec("execute stmt3;")
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tk.MustQuery("select @@last_plan_from_cache").Check(testkit.Rows("1"))
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tk.MustExec("create global binding for update t1 set a = 1 where b = 1 and c > 1 using update /*+ use_index(t1,idx_c) */ t1 set a = 1 where b = 1 and c > 1")
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tk.MustExec("execute stmt3;")
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require.Equal(t, "t1:idx_c", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
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tkProcess = tk.Session().ShowProcess()
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ps = []*util.ProcessInfo{tkProcess}
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tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
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res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
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require.True(t, tk.MustUseIndex4ExplainFor(res, "idx_c(c)"), res.Rows())
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tk.MustExec("prepare stmt4 from 'update t1, t2 set t1.a = 1 where t1.b = t2.b';")
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tk.MustExec("execute stmt4;")
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tkProcess = tk.Session().ShowProcess()
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ps = []*util.ProcessInfo{tkProcess}
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tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
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res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
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require.True(t, tk.HasPlan4ExplainFor(res, "HashJoin"), res.Rows())
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tk.MustExec("execute stmt4;")
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tk.MustQuery("select @@last_plan_from_cache").Check(testkit.Rows("1"))
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tk.MustExec("create global binding for update t1, t2 set t1.a = 1 where t1.b = t2.b using update /*+ inl_join(t1) */ t1, t2 set t1.a = 1 where t1.b = t2.b")
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tk.MustExec("execute stmt4;")
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tkProcess = tk.Session().ShowProcess()
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ps = []*util.ProcessInfo{tkProcess}
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tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
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res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
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require.True(t, tk.HasPlan4ExplainFor(res, "IndexJoin"), res.Rows())
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tk.MustExec("prepare stmt5 from 'insert into t1 select * from t2 where t2.b = 2 and t2.c > 2';")
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tk.MustExec("execute stmt5;")
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require.Equal(t, "t2:idx_b", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
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tkProcess = tk.Session().ShowProcess()
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ps = []*util.ProcessInfo{tkProcess}
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tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
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res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
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require.True(t, tk.MustUseIndex4ExplainFor(res, "idx_b(b)"), res.Rows())
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tk.MustExec("execute stmt5;")
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tk.MustQuery("select @@last_plan_from_cache").Check(testkit.Rows("1"))
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tk.MustExec("create global binding for insert into t1 select * from t2 where t2.b = 1 and t2.c > 1 using insert /*+ use_index(t2,idx_c) */ into t1 select * from t2 where t2.b = 1 and t2.c > 1")
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tk.MustExec("execute stmt5;")
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require.Equal(t, "t2:idx_b", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
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tkProcess = tk.Session().ShowProcess()
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ps = []*util.ProcessInfo{tkProcess}
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tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
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res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
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require.True(t, tk.MustUseIndex4ExplainFor(res, "idx_b(b)"), res.Rows())
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tk.MustExec("drop global binding for insert into t1 select * from t2 where t2.b = 1 and t2.c > 1")
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tk.MustExec("create global binding for insert into t1 select * from t2 where t2.b = 1 and t2.c > 1 using insert into t1 select /*+ use_index(t2,idx_c) */ * from t2 where t2.b = 1 and t2.c > 1")
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tk.MustExec("execute stmt5;")
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require.Equal(t, "t2:idx_c", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
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tkProcess = tk.Session().ShowProcess()
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ps = []*util.ProcessInfo{tkProcess}
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tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
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res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
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require.True(t, tk.MustUseIndex4ExplainFor(res, "idx_c(c)"), res.Rows())
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tk.MustExec("prepare stmt6 from 'replace into t1 select * from t2 where t2.b = 2 and t2.c > 2';")
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tk.MustExec("execute stmt6;")
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require.Equal(t, "t2:idx_b", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
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tkProcess = tk.Session().ShowProcess()
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ps = []*util.ProcessInfo{tkProcess}
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tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
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res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
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require.True(t, tk.MustUseIndex4ExplainFor(res, "idx_b(b)"), res.Rows())
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tk.MustExec("execute stmt6;")
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tk.MustQuery("select @@last_plan_from_cache").Check(testkit.Rows("1"))
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tk.MustExec("create global binding for replace into t1 select * from t2 where t2.b = 1 and t2.c > 1 using replace into t1 select /*+ use_index(t2,idx_c) */ * from t2 where t2.b = 1 and t2.c > 1")
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tk.MustExec("execute stmt6;")
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require.Equal(t, "t2:idx_c", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
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tkProcess = tk.Session().ShowProcess()
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ps = []*util.ProcessInfo{tkProcess}
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tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
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res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
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require.True(t, tk.MustUseIndex4ExplainFor(res, "idx_c(c)"), res.Rows())
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// TestExplain
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tk.MustExec("drop table if exists t1")
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tk.MustExec("drop table if exists t2")
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tk.MustExec("create table t1(id int)")
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tk.MustExec("create table t2(id int)")
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tk.MustExec("prepare stmt1 from 'SELECT * from t1,t2 where t1.id = t2.id';")
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tk.MustExec("execute stmt1;")
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tkProcess = tk.Session().ShowProcess()
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ps = []*util.ProcessInfo{tkProcess}
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tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
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res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
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require.True(t, tk.HasPlan4ExplainFor(res, "HashJoin"))
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tk.MustExec("execute stmt1;")
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tk.MustQuery("select @@last_plan_from_cache").Check(testkit.Rows("1"))
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tk.MustExec("prepare stmt2 from 'SELECT /*+ TIDB_SMJ(t1, t2) */ * from t1,t2 where t1.id = t2.id';")
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tk.MustExec("execute stmt2;")
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tkProcess = tk.Session().ShowProcess()
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ps = []*util.ProcessInfo{tkProcess}
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tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
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res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
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require.True(t, tk.HasPlan4ExplainFor(res, "MergeJoin"))
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tk.MustExec("execute stmt2;")
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tk.MustQuery("select @@last_plan_from_cache").Check(testkit.Rows("1"))
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tk.MustExec("create global binding for SELECT * from t1,t2 where t1.id = t2.id using SELECT /*+ TIDB_SMJ(t1, t2) */ * from t1,t2 where t1.id = t2.id")
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tk.MustExec("execute stmt1;")
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tkProcess = tk.Session().ShowProcess()
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ps = []*util.ProcessInfo{tkProcess}
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tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
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res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
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require.True(t, tk.HasPlan4ExplainFor(res, "MergeJoin"))
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tk.MustExec("drop global binding for SELECT * from t1,t2 where t1.id = t2.id")
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tk.MustExec("create index index_id on t1(id)")
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tk.MustExec("prepare stmt1 from 'SELECT * from t1 use index(index_id)';")
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tk.MustExec("execute stmt1;")
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tkProcess = tk.Session().ShowProcess()
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ps = []*util.ProcessInfo{tkProcess}
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tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
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res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
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require.True(t, tk.HasPlan4ExplainFor(res, "IndexReader"))
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tk.MustExec("execute stmt1;")
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tk.MustQuery("select @@last_plan_from_cache").Check(testkit.Rows("1"))
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tk.MustExec("create global binding for SELECT * from t1 using SELECT * from t1 ignore index(index_id)")
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tk.MustExec("execute stmt1;")
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tkProcess = tk.Session().ShowProcess()
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ps = []*util.ProcessInfo{tkProcess}
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tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
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res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
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require.False(t, tk.HasPlan4ExplainFor(res, "IndexReader"))
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tk.MustExec("execute stmt1;")
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tk.MustQuery("select @@last_plan_from_cache").Check(testkit.Rows("1"))
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// Add test for SetOprStmt
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tk.MustExec("prepare stmt1 from 'SELECT * from t1 union SELECT * from t1';")
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tk.MustExec("execute stmt1;")
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tkProcess = tk.Session().ShowProcess()
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ps = []*util.ProcessInfo{tkProcess}
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tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
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res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
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require.True(t, tk.HasPlan4ExplainFor(res, "IndexReader"))
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tk.MustExec("execute stmt1;")
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tk.MustQuery("select @@last_plan_from_cache").Check(testkit.Rows("1"))
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tk.MustExec("prepare stmt2 from 'SELECT * from t1 use index(index_id) union SELECT * from t1';")
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tk.MustExec("execute stmt2;")
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tkProcess = tk.Session().ShowProcess()
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ps = []*util.ProcessInfo{tkProcess}
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tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
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res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
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require.True(t, tk.HasPlan4ExplainFor(res, "IndexReader"))
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tk.MustExec("execute stmt2;")
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tk.MustQuery("select @@last_plan_from_cache").Check(testkit.Rows("1"))
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tk.MustExec("create global binding for SELECT * from t1 union SELECT * from t1 using SELECT * from t1 use index(index_id) union SELECT * from t1")
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tk.MustExec("execute stmt1;")
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tkProcess = tk.Session().ShowProcess()
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ps = []*util.ProcessInfo{tkProcess}
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tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
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res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
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require.True(t, tk.HasPlan4ExplainFor(res, "IndexReader"))
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tk.MustExec("drop global binding for SELECT * from t1 union SELECT * from t1")
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// TestBindingSymbolList
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tk.MustExec("drop table if exists t")
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tk.MustExec("create table t(a int, b int, INDEX ia (a), INDEX ib (b));")
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tk.MustExec("insert into t value(1, 1);")
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tk.MustExec("prepare stmt1 from 'select a, b from t where a = 3 limit 1, 100';")
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tk.MustExec("execute stmt1;")
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require.Equal(t, "t:ia", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
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tkProcess = tk.Session().ShowProcess()
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ps = []*util.ProcessInfo{tkProcess}
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tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
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res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
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require.True(t, tk.MustUseIndex4ExplainFor(res, "ia(a)"), res.Rows())
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tk.MustExec("execute stmt1;")
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tk.MustQuery("select @@last_plan_from_cache").Check(testkit.Rows("1"))
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tk.MustExec(`create global binding for select a, b from t where a = 1 limit 0, 1 using select a, b from t use index (ib) where a = 1 limit 0, 1`)
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// after binding
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tk.MustExec("execute stmt1;")
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require.Equal(t, "t:ib", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
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tkProcess = tk.Session().ShowProcess()
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ps = []*util.ProcessInfo{tkProcess}
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tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
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res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
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require.True(t, tk.MustUseIndex4ExplainFor(res, "ib(b)"), res.Rows())
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}
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// TestBindingSymbolList tests sql with "?, ?, ?, ?", fixes #13871
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func TestBindingSymbolList(t *testing.T) {
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store, dom := testkit.CreateMockStoreAndDomain(t)
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tk := testkit.NewTestKit(t, store)
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tk.MustExec("use test")
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tk.MustExec("drop table if exists t")
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tk.MustExec("create table t(a int, b int, INDEX ia (a), INDEX ib (b));")
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tk.MustExec("insert into t value(1, 1);")
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// before binding
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tk.MustQuery("select a, b from t where a = 3 limit 1, 100")
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require.Equal(t, "t:ia", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
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require.True(t, tk.MustUseIndex("select a, b from t where a = 3 limit 1, 100", "ia(a)"))
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tk.MustExec(`create global binding for select a, b from t where a = 1 limit 0, 1 using select a, b from t use index (ib) where a = 1 limit 0, 1`)
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// after binding
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tk.MustQuery("select a, b from t where a = 3 limit 1, 100")
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require.Equal(t, "t:ib", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
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require.True(t, tk.MustUseIndex("select a, b from t where a = 3 limit 1, 100", "ib(b)"))
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// Normalize
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stmt, err := parser.New().ParseOneStmt("select a, b from test . t where a = 1 limit 0, 1", "", "")
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require.NoError(t, err)
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_, fuzzyDigest := norm.NormalizeStmtForBinding(stmt, norm.WithFuzz(true))
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binding, matched := dom.BindHandle().MatchGlobalBinding(tk.Session(), fuzzyDigest, bindinfo.CollectTableNames(stmt))
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require.True(t, matched)
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require.Equal(t, "select `a` , `b` from `test` . `t` where `a` = ? limit ...", binding.OriginalSQL)
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require.Equal(t, "SELECT `a`,`b` FROM `test`.`t` USE INDEX (`ib`) WHERE `a` = 1 LIMIT 0,1", binding.BindSQL)
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require.Equal(t, "test", binding.Db)
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require.Equal(t, bindinfo.Enabled, binding.Status)
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require.NotNil(t, binding.Charset)
|
|
require.NotNil(t, binding.Collation)
|
|
require.NotNil(t, binding.CreateTime)
|
|
require.NotNil(t, binding.UpdateTime)
|
|
}
|
|
|
|
// TestBindingInListWithSingleLiteral tests sql with "IN (Lit)", fixes #44298
|
|
func TestBindingInListWithSingleLiteral(t *testing.T) {
|
|
store, dom := testkit.CreateMockStoreAndDomain(t)
|
|
|
|
tk := testkit.NewTestKit(t, store)
|
|
tk.MustExec("use test")
|
|
tk.MustExec("drop table if exists t")
|
|
tk.MustExec("create table t(a int, b int, INDEX ia (a), INDEX ib (b));")
|
|
tk.MustExec("insert into t value(1, 1);")
|
|
|
|
// GIVEN
|
|
sqlcmd := "select a, b from t where a in (1)"
|
|
bindingStmt := `create global binding for select a, b from t where a in (1, 2, 3) using select a, b from t use index (ib) where a in (1, 2, 3)`
|
|
|
|
// before binding
|
|
tk.MustQuery(sqlcmd)
|
|
require.Equal(t, "t:ia", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
|
|
require.True(t, tk.MustUseIndex(sqlcmd, "ia(a)"))
|
|
|
|
tk.MustExec(bindingStmt)
|
|
|
|
// after binding
|
|
tk.MustQuery(sqlcmd)
|
|
require.Equal(t, "t:ib", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
|
|
require.True(t, tk.MustUseIndex(sqlcmd, "ib(b)"))
|
|
|
|
tk.MustQuery("select @@last_plan_from_binding").Check(testkit.Rows("1"))
|
|
|
|
// Normalize
|
|
stmt, err := parser.New().ParseOneStmt("select a, b from test . t where a in (1)", "", "")
|
|
require.NoError(t, err)
|
|
|
|
_, fuzzyDigest := norm.NormalizeStmtForBinding(stmt, norm.WithFuzz(true))
|
|
binding, matched := dom.BindHandle().MatchGlobalBinding(tk.Session(), fuzzyDigest, bindinfo.CollectTableNames(stmt))
|
|
require.True(t, matched)
|
|
require.Equal(t, "select `a` , `b` from `test` . `t` where `a` in ( ... )", binding.OriginalSQL)
|
|
require.Equal(t, "SELECT `a`,`b` FROM `test`.`t` USE INDEX (`ib`) WHERE `a` IN (1,2,3)", binding.BindSQL)
|
|
require.Equal(t, "test", binding.Db)
|
|
require.Equal(t, bindinfo.Enabled, binding.Status)
|
|
require.NotNil(t, binding.Charset)
|
|
require.NotNil(t, binding.Collation)
|
|
require.NotNil(t, binding.CreateTime)
|
|
require.NotNil(t, binding.UpdateTime)
|
|
}
|
|
|
|
func TestBestPlanInBaselines(t *testing.T) {
|
|
store, dom := testkit.CreateMockStoreAndDomain(t)
|
|
|
|
tk := testkit.NewTestKit(t, store)
|
|
tk.MustExec("use test")
|
|
tk.MustExec("drop table if exists t")
|
|
tk.MustExec("create table t(a int, b int, INDEX ia (a), INDEX ib (b));")
|
|
tk.MustExec("insert into t value(1, 1);")
|
|
|
|
// before binding
|
|
tk.MustQuery("select a, b from t where a = 3 limit 1, 100")
|
|
require.Equal(t, "t:ia", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
|
|
require.True(t, tk.MustUseIndex("select a, b from t where a = 3 limit 1, 100", "ia(a)"))
|
|
|
|
tk.MustQuery("select a, b from t where b = 3 limit 1, 100")
|
|
require.Equal(t, "t:ib", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
|
|
require.True(t, tk.MustUseIndex("select a, b from t where b = 3 limit 1, 100", "ib(b)"))
|
|
|
|
tk.MustExec(`create global binding for select a, b from t where a = 1 limit 0, 1 using select /*+ use_index(@sel_1 test.t ia) */ a, b from t where a = 1 limit 0, 1`)
|
|
tk.MustExec(`create global binding for select a, b from t where b = 1 limit 0, 1 using select /*+ use_index(@sel_1 test.t ib) */ a, b from t where b = 1 limit 0, 1`)
|
|
|
|
stmt, _, _ := internal.UtilNormalizeWithDefaultDB(t, "select a, b from t where a = 1 limit 0, 1")
|
|
|
|
_, fuzzyDigest := norm.NormalizeStmtForBinding(stmt, norm.WithFuzz(true))
|
|
binding, matched := dom.BindHandle().MatchGlobalBinding(tk.Session(), fuzzyDigest, bindinfo.CollectTableNames(stmt))
|
|
require.True(t, matched)
|
|
require.Equal(t, "select `a` , `b` from `test` . `t` where `a` = ? limit ...", binding.OriginalSQL)
|
|
require.Equal(t, "SELECT /*+ use_index(@`sel_1` `test`.`t` `ia`)*/ `a`,`b` FROM `test`.`t` WHERE `a` = 1 LIMIT 0,1", binding.BindSQL)
|
|
require.Equal(t, "test", binding.Db)
|
|
require.Equal(t, bindinfo.Enabled, binding.Status)
|
|
|
|
tk.MustQuery("select a, b from t where a = 3 limit 1, 10")
|
|
require.Equal(t, "t:ia", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
|
|
require.True(t, tk.MustUseIndex("select a, b from t where a = 3 limit 1, 100", "ia(a)"))
|
|
|
|
tk.MustQuery("select a, b from t where b = 3 limit 1, 100")
|
|
require.Equal(t, "t:ib", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
|
|
require.True(t, tk.MustUseIndex("select a, b from t where b = 3 limit 1, 100", "ib(b)"))
|
|
}
|
|
|
|
func TestIssue50646(t *testing.T) {
|
|
store := testkit.CreateMockStore(t)
|
|
tk := testkit.NewTestKit(t, store)
|
|
tk.MustExec(`create database TICASE;`)
|
|
tk.MustExec(`use TICASE;`)
|
|
tk.MustExec(`create table t(a int, b int, index idx(a));`)
|
|
tk.MustExec(`create table t1(a int, b int, index idx(a));`)
|
|
tk.MustExec(`create global binding for delete t, t1 from t use index(idx) join t1 use index(idx) on t.a=t1.a using delete /*+ merge_join(t) */ t, t1 from t use index(idx) join t1 use index(idx) on t.a=t1.a;`)
|
|
tk.MustHavePlan(`delete /*+ inl_merge_join(t) */ t, t1 from t ignore index(idx) join t1 ignore index(idx) on t.a=t1.a;`, "MergeJoin")
|
|
tk.MustExec(`delete t, t1 from t ignore index(idx) join t1 ignore index(idx) on t.a=t1.a;`)
|
|
tk.MustQuery(`select @@last_plan_from_binding`).Check(testkit.Rows("1"))
|
|
}
|
|
|
|
func TestErrorBind(t *testing.T) {
|
|
store, dom := testkit.CreateMockStoreAndDomain(t)
|
|
|
|
tk := testkit.NewTestKit(t, store)
|
|
tk.MustExec("use test")
|
|
tk.MustGetErrMsg("create global binding for select * from t using select * from t", "[schema:1146]Table 'test.t' doesn't exist")
|
|
tk.MustExec("drop table if exists t")
|
|
tk.MustExec("drop table if exists t1")
|
|
tk.MustExec("create table t(i int, s varchar(20))")
|
|
tk.MustExec("create table t1(i int, s varchar(20))")
|
|
tk.MustExec("create index index_t on t(i,s)")
|
|
|
|
_, err := tk.Exec("create global binding for select * from t where i>100 using select * from t use index(index_t) where i>100")
|
|
require.NoError(t, err, "err %v", err)
|
|
|
|
stmt, err := parser.New().ParseOneStmt("select * from test . t where i > ?", "", "")
|
|
require.NoError(t, err)
|
|
_, fuzzyDigest := norm.NormalizeStmtForBinding(stmt, norm.WithFuzz(true))
|
|
binding, matched := dom.BindHandle().MatchGlobalBinding(tk.Session(), fuzzyDigest, bindinfo.CollectTableNames(stmt))
|
|
require.True(t, matched)
|
|
require.Equal(t, "select * from `test` . `t` where `i` > ?", binding.OriginalSQL)
|
|
require.Equal(t, "SELECT * FROM `test`.`t` USE INDEX (`index_t`) WHERE `i` > 100", binding.BindSQL)
|
|
require.Equal(t, "test", binding.Db)
|
|
require.Equal(t, bindinfo.Enabled, binding.Status)
|
|
require.NotNil(t, binding.Charset)
|
|
require.NotNil(t, binding.Collation)
|
|
require.NotNil(t, binding.CreateTime)
|
|
require.NotNil(t, binding.UpdateTime)
|
|
|
|
tk.MustExec("drop index index_t on t")
|
|
rs, err := tk.Exec("select * from t where i > 10")
|
|
require.NoError(t, err)
|
|
rs.Close()
|
|
|
|
dom.BindHandle().DropInvalidGlobalBinding()
|
|
|
|
rs, err = tk.Exec("show global bindings")
|
|
require.NoError(t, err)
|
|
chk := rs.NewChunk(nil)
|
|
err = rs.Next(context.TODO(), chk)
|
|
require.NoError(t, err)
|
|
require.Equal(t, 0, chk.NumRows())
|
|
}
|
|
|
|
func TestStmtHints(t *testing.T) {
|
|
store := testkit.CreateMockStore(t)
|
|
|
|
tk := testkit.NewTestKit(t, store)
|
|
tk.MustExec("use test")
|
|
tk.MustExec("drop table if exists t")
|
|
tk.MustExec("create table t(a int, b int, index idx(a))")
|
|
tk.MustExec("create global binding for select * from t using select /*+ MAX_EXECUTION_TIME(100), SET_VAR(TIKV_CLIENT_READ_TIMEOUT=20), MEMORY_QUOTA(2 GB) */ * from t use index(idx)")
|
|
tk.MustQuery("select * from t")
|
|
require.Equal(t, int64(2147483648), tk.Session().GetSessionVars().MemTracker.GetBytesLimit())
|
|
require.Equal(t, uint64(100), tk.Session().GetSessionVars().StmtCtx.MaxExecutionTime)
|
|
require.Equal(t, uint64(20), tk.Session().GetSessionVars().GetTiKVClientReadTimeout())
|
|
tk.MustQuery("select a, b from t")
|
|
require.Equal(t, int64(1073741824), tk.Session().GetSessionVars().MemTracker.GetBytesLimit())
|
|
require.Equal(t, uint64(0), tk.Session().GetSessionVars().StmtCtx.MaxExecutionTime)
|
|
// TODO(crazycs520): Fix me.
|
|
//require.Equal(t, uint64(0), tk.Session().GetSessionVars().GetTiKVClientReadTimeout())
|
|
}
|
|
|
|
func TestHintsSetID(t *testing.T) {
|
|
store, dom := testkit.CreateMockStoreAndDomain(t)
|
|
|
|
tk := testkit.NewTestKit(t, store)
|
|
tk.MustExec("use test")
|
|
tk.MustExec("drop table if exists t")
|
|
tk.MustExec("create table t(a int, index idx_a(a))")
|
|
tk.MustExec("create global binding for select * from t where a > 10 using select /*+ use_index(test.t, idx_a) */ * from t where a > 10")
|
|
// Verify the added Binding contains ID with restored query block.
|
|
stmt, err := parser.New().ParseOneStmt("select * from t where a > ?", "", "")
|
|
require.NoError(t, err)
|
|
_, fuzzyDigest := norm.NormalizeStmtForBinding(stmt, norm.WithFuzz(true))
|
|
binding, matched := dom.BindHandle().MatchGlobalBinding(tk.Session(), fuzzyDigest, bindinfo.CollectTableNames(stmt))
|
|
require.True(t, matched)
|
|
require.Equal(t, "select * from `test` . `t` where `a` > ?", binding.OriginalSQL)
|
|
require.Equal(t, "use_index(@`sel_1` `test`.`t` `idx_a`)", binding.ID)
|
|
|
|
internal.UtilCleanBindingEnv(tk, dom)
|
|
tk.MustExec("create global binding for select * from t where a > 10 using select /*+ use_index(t, idx_a) */ * from t where a > 10")
|
|
_, fuzzyDigest = norm.NormalizeStmtForBinding(stmt, norm.WithFuzz(true))
|
|
binding, matched = dom.BindHandle().MatchGlobalBinding(tk.Session(), fuzzyDigest, bindinfo.CollectTableNames(stmt))
|
|
require.True(t, matched)
|
|
require.Equal(t, "select * from `test` . `t` where `a` > ?", binding.OriginalSQL)
|
|
require.Equal(t, "use_index(@`sel_1` `test`.`t` `idx_a`)", binding.ID)
|
|
|
|
internal.UtilCleanBindingEnv(tk, dom)
|
|
tk.MustExec("create global binding for select * from t where a > 10 using select /*+ use_index(@sel_1 t, idx_a) */ * from t where a > 10")
|
|
_, fuzzyDigest = norm.NormalizeStmtForBinding(stmt, norm.WithFuzz(true))
|
|
binding, matched = dom.BindHandle().MatchGlobalBinding(tk.Session(), fuzzyDigest, bindinfo.CollectTableNames(stmt))
|
|
require.True(t, matched)
|
|
require.Equal(t, "select * from `test` . `t` where `a` > ?", binding.OriginalSQL)
|
|
require.Equal(t, "use_index(@`sel_1` `test`.`t` `idx_a`)", binding.ID)
|
|
|
|
internal.UtilCleanBindingEnv(tk, dom)
|
|
tk.MustExec("create global binding for select * from t where a > 10 using select /*+ use_index(@qb1 t, idx_a) qb_name(qb1) */ * from t where a > 10")
|
|
_, fuzzyDigest = norm.NormalizeStmtForBinding(stmt, norm.WithFuzz(true))
|
|
binding, matched = dom.BindHandle().MatchGlobalBinding(tk.Session(), fuzzyDigest, bindinfo.CollectTableNames(stmt))
|
|
require.True(t, matched)
|
|
require.Equal(t, "select * from `test` . `t` where `a` > ?", binding.OriginalSQL)
|
|
require.Equal(t, "use_index(@`sel_1` `test`.`t` `idx_a`)", binding.ID)
|
|
|
|
internal.UtilCleanBindingEnv(tk, dom)
|
|
tk.MustExec("create global binding for select * from t where a > 10 using select /*+ use_index(T, IDX_A) */ * from t where a > 10")
|
|
_, fuzzyDigest = norm.NormalizeStmtForBinding(stmt, norm.WithFuzz(true))
|
|
binding, matched = dom.BindHandle().MatchGlobalBinding(tk.Session(), fuzzyDigest, bindinfo.CollectTableNames(stmt))
|
|
require.True(t, matched)
|
|
require.Equal(t, "select * from `test` . `t` where `a` > ?", binding.OriginalSQL)
|
|
require.Equal(t, "use_index(@`sel_1` `test`.`t` `idx_a`)", binding.ID)
|
|
|
|
internal.UtilCleanBindingEnv(tk, dom)
|
|
err = tk.ExecToErr("create global binding for select * from t using select /*+ non_exist_hint() */ * from t")
|
|
require.True(t, terror.ErrorEqual(err, parser.ErrParse))
|
|
tk.MustExec("create global binding for select * from t where a > 10 using select * from t where a > 10")
|
|
_, fuzzyDigest = norm.NormalizeStmtForBinding(stmt, norm.WithFuzz(true))
|
|
binding, matched = dom.BindHandle().MatchGlobalBinding(tk.Session(), fuzzyDigest, bindinfo.CollectTableNames(stmt))
|
|
require.True(t, matched)
|
|
require.Equal(t, "select * from `test` . `t` where `a` > ?", binding.OriginalSQL)
|
|
require.Equal(t, "", binding.ID)
|
|
}
|
|
|
|
func TestBindingWithIsolationRead(t *testing.T) {
|
|
store := testkit.CreateMockStore(t)
|
|
|
|
tk := testkit.NewTestKit(t, store)
|
|
tk.MustExec("use test")
|
|
tk.MustExec("set tidb_cost_model_version=2")
|
|
tk.MustExec("drop table if exists t")
|
|
tk.MustExec("create table t(a int, b int, index idx_a(a), index idx_b(b))")
|
|
tk.MustExec("insert into t values (1,1), (2,2), (3,3), (4,4), (5,5), (6,6), (7,7), (8,8), (9,9), (10,10)")
|
|
tk.MustExec("analyze table t")
|
|
// Create virtual tiflash replica info.
|
|
dom := domain.GetDomain(tk.Session())
|
|
is := dom.InfoSchema()
|
|
db, exists := is.SchemaByName(model.NewCIStr("test"))
|
|
require.True(t, exists)
|
|
for _, tbl := range is.SchemaTables(db.Name) {
|
|
tblInfo := tbl.Meta()
|
|
if tblInfo.Name.L == "t" {
|
|
tblInfo.TiFlashReplica = &model.TiFlashReplicaInfo{
|
|
Count: 1,
|
|
Available: true,
|
|
}
|
|
}
|
|
}
|
|
tk.MustExec("create global binding for select * from t where a >= 1 and b >= 1 using select * from t use index(idx_a) where a >= 1 and b >= 1")
|
|
tk.MustExec("set @@tidb_use_plan_baselines = 1")
|
|
rows := tk.MustQuery("explain select * from t where a >= 11 and b >= 11").Rows()
|
|
require.Equal(t, "cop[tikv]", rows[len(rows)-1][2])
|
|
// Even if we build a binding use index for SQL, but after we set the isolation read for TiFlash, it choose TiFlash instead of index of TiKV.
|
|
tk.MustExec("set @@tidb_isolation_read_engines = \"tiflash\"")
|
|
rows = tk.MustQuery("explain select * from t where a >= 11 and b >= 11").Rows()
|
|
require.Equal(t, "mpp[tiflash]", rows[len(rows)-1][2])
|
|
}
|
|
|
|
func TestInvisibleIndex(t *testing.T) {
|
|
store := testkit.CreateMockStore(t)
|
|
|
|
tk := testkit.NewTestKit(t, store)
|
|
tk.MustExec("use test")
|
|
tk.MustExec("drop table if exists t")
|
|
tk.MustExec("create table t(a int, b int, unique idx_a(a), index idx_b(b) invisible)")
|
|
tk.MustGetErrMsg(
|
|
"create global binding for select * from t using select * from t use index(idx_b) ",
|
|
"[planner:1176]Key 'idx_b' doesn't exist in table 't'")
|
|
|
|
// Create bind using index
|
|
tk.MustExec("create global binding for select * from t using select * from t use index(idx_a) ")
|
|
|
|
tk.MustQuery("select * from t")
|
|
require.Equal(t, "t:idx_a", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
|
|
require.True(t, tk.MustUseIndex("select * from t", "idx_a(a)"))
|
|
|
|
tk.MustExec(`prepare stmt1 from 'select * from t'`)
|
|
tk.MustExec("execute stmt1")
|
|
require.Len(t, tk.Session().GetSessionVars().StmtCtx.IndexNames, 1)
|
|
require.Equal(t, "t:idx_a", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
|
|
|
|
// And then make this index invisible
|
|
tk.MustExec("alter table t alter index idx_a invisible")
|
|
tk.MustQuery("select * from t")
|
|
require.Len(t, tk.Session().GetSessionVars().StmtCtx.IndexNames, 0)
|
|
|
|
tk.MustExec("execute stmt1")
|
|
require.Len(t, tk.Session().GetSessionVars().StmtCtx.IndexNames, 0)
|
|
|
|
tk.MustExec("drop global binding for select * from t")
|
|
}
|
|
|
|
func TestGCBindRecord(t *testing.T) {
|
|
// set lease for gc tests
|
|
originLease := bindinfo.Lease
|
|
bindinfo.Lease = 0
|
|
defer func() {
|
|
bindinfo.Lease = originLease
|
|
}()
|
|
|
|
store, dom := testkit.CreateMockStoreAndDomain(t)
|
|
|
|
tk := testkit.NewTestKit(t, store)
|
|
tk.MustExec("use test")
|
|
tk.MustExec("drop table if exists t")
|
|
tk.MustExec("create table t(a int, b int, key(a))")
|
|
|
|
tk.MustExec("create global binding for select * from t where a = 1 using select * from t use index(a) where a = 1")
|
|
rows := tk.MustQuery("show global bindings").Rows()
|
|
require.Len(t, rows, 1)
|
|
require.Equal(t, "select * from `test` . `t` where `a` = ?", rows[0][0])
|
|
require.Equal(t, bindinfo.Enabled, rows[0][3])
|
|
tk.MustQuery("select status from mysql.bind_info where original_sql = 'select * from `test` . `t` where `a` = ?'").Check(testkit.Rows(
|
|
bindinfo.Enabled,
|
|
))
|
|
|
|
h := dom.BindHandle()
|
|
// bindinfo.Lease is set to 0 for test env in SetUpSuite.
|
|
require.NoError(t, h.GCGlobalBinding())
|
|
rows = tk.MustQuery("show global bindings").Rows()
|
|
require.Len(t, rows, 1)
|
|
require.Equal(t, "select * from `test` . `t` where `a` = ?", rows[0][0])
|
|
require.Equal(t, bindinfo.Enabled, rows[0][3])
|
|
tk.MustQuery("select status from mysql.bind_info where original_sql = 'select * from `test` . `t` where `a` = ?'").Check(testkit.Rows(
|
|
bindinfo.Enabled,
|
|
))
|
|
|
|
tk.MustExec("drop global binding for select * from t where a = 1")
|
|
tk.MustQuery("show global bindings").Check(testkit.Rows())
|
|
tk.MustQuery("select status from mysql.bind_info where original_sql = 'select * from `test` . `t` where `a` = ?'").Check(testkit.Rows(
|
|
"deleted",
|
|
))
|
|
require.NoError(t, h.GCGlobalBinding())
|
|
tk.MustQuery("show global bindings").Check(testkit.Rows())
|
|
tk.MustQuery("select status from mysql.bind_info where original_sql = 'select * from `test` . `t` where `a` = ?'").Check(testkit.Rows())
|
|
}
|
|
|
|
func TestBindSQLDigest(t *testing.T) {
|
|
store, dom := testkit.CreateMockStoreAndDomain(t)
|
|
tk := testkit.NewTestKit(t, store)
|
|
tk.MustExec("use test")
|
|
tk.MustExec("drop table if exists t")
|
|
tk.MustExec("create table t(pk int primary key, a int, b int, key(a), key(b))")
|
|
|
|
cases := []struct {
|
|
origin string
|
|
hint string
|
|
}{
|
|
// agg hints
|
|
{"select count(1) from t", "select /*+ hash_agg() */ count(1) from t"},
|
|
{"select count(1) from t", "select /*+ stream_agg() */ count(1) from t"},
|
|
// join hints
|
|
{"select * from t t1, t t2 where t1.a=t2.a", "select /*+ merge_join(t1, t2) */ * from t t1, t t2 where t1.a=t2.a"},
|
|
{"select * from t t1, t t2 where t1.a=t2.a", "select /*+ tidb_smj(t1, t2) */ * from t t1, t t2 where t1.a=t2.a"},
|
|
{"select * from t t1, t t2 where t1.a=t2.a", "select /*+ hash_join(t1, t2) */ * from t t1, t t2 where t1.a=t2.a"},
|
|
{"select * from t t1, t t2 where t1.a=t2.a", "select /*+ tidb_hj(t1, t2) */ * from t t1, t t2 where t1.a=t2.a"},
|
|
{"select * from t t1, t t2 where t1.a=t2.a", "select /*+ inl_join(t1, t2) */ * from t t1, t t2 where t1.a=t2.a"},
|
|
{"select * from t t1, t t2 where t1.a=t2.a", "select /*+ tidb_inlj(t1, t2) */ * from t t1, t t2 where t1.a=t2.a"},
|
|
{"select * from t t1, t t2 where t1.a=t2.a", "select /*+ inl_hash_join(t1, t2) */ * from t t1, t t2 where t1.a=t2.a"},
|
|
// index hints
|
|
{"select * from t", "select * from t use index(primary)"},
|
|
{"select * from t", "select /*+ use_index(primary) */ * from t"},
|
|
{"select * from t", "select * from t use index(a)"},
|
|
{"select * from t", "select /*+ use_index(a) */ * from t use index(a)"},
|
|
{"select * from t", "select * from t use index(b)"},
|
|
{"select * from t", "select /*+ use_index(b) */ * from t use index(b)"},
|
|
{"select a, b from t where a=1 or b=1", "select /*+ use_index_merge(t, a, b) */ a, b from t where a=1 or b=1"},
|
|
{"select * from t where a=1", "select /*+ ignore_index(t, a) */ * from t where a=1"},
|
|
// push-down hints
|
|
{"select * from t limit 10", "select /*+ limit_to_cop() */ * from t limit 10"},
|
|
{"select a, count(*) from t group by a", "select /*+ agg_to_cop() */ a, count(*) from t group by a"},
|
|
// index-merge hints
|
|
{"select a, b from t where a>1 or b>1", "select /*+ no_index_merge() */ a, b from t where a>1 or b>1"},
|
|
{"select a, b from t where a>1 or b>1", "select /*+ use_index_merge(t, a, b) */ a, b from t where a>1 or b>1"},
|
|
// runtime hints
|
|
{"select * from t", "select /*+ memory_quota(1024 MB) */ * from t"},
|
|
{"select * from t", "select /*+ max_execution_time(1000) */ * from t"},
|
|
{"select * from t", "select /*+ set_var(tikv_client_read_timeout=1000) */ * from t"},
|
|
// storage hints
|
|
{"select * from t", "select /*+ read_from_storage(tikv[t]) */ * from t"},
|
|
// others
|
|
{"select t1.a, t1.b from t t1 where t1.a in (select t2.a from t t2)", "select /*+ use_toja(true) */ t1.a, t1.b from t t1 where t1.a in (select t2.a from t t2)"},
|
|
}
|
|
for _, c := range cases {
|
|
stmtsummary.StmtSummaryByDigestMap.Clear()
|
|
internal.UtilCleanBindingEnv(tk, dom)
|
|
sql := "create global binding for " + c.origin + " using " + c.hint
|
|
tk.MustExec(sql)
|
|
res := tk.MustQuery(`show global bindings`).Rows()
|
|
require.Equal(t, len(res[0]), 11)
|
|
|
|
parser4binding := parser.New()
|
|
originNode, err := parser4binding.ParseOneStmt(c.origin, "utf8mb4", "utf8mb4_general_ci")
|
|
require.NoError(t, err)
|
|
_, sqlDigestWithDB := parser.NormalizeDigestForBinding(utilparser.RestoreWithDefaultDB(originNode, "test", c.origin))
|
|
require.Equal(t, res[0][9], sqlDigestWithDB.String())
|
|
}
|
|
}
|
|
|
|
func TestSimplifiedCreateBinding(t *testing.T) {
|
|
store := testkit.CreateMockStore(t)
|
|
tk := testkit.NewTestKit(t, store)
|
|
tk.MustExec(`use test`)
|
|
tk.MustExec(`create table t (a int, b int, key(a))`)
|
|
|
|
check := func(scope, sql, binding string) {
|
|
r := tk.MustQuery(fmt.Sprintf("show %s bindings", scope)).Rows()
|
|
require.Equal(t, len(r), 1)
|
|
require.Equal(t, r[0][0].(string), sql)
|
|
require.Equal(t, r[0][1].(string), binding)
|
|
}
|
|
|
|
tk.MustExec(`create binding using select /*+ use_index(t, a) */ * from t`)
|
|
check("", "select * from `test` . `t`", "SELECT /*+ use_index(`t` `a`)*/ * FROM `test`.`t`")
|
|
tk.MustExec(`drop binding for select * from t`)
|
|
tk.MustExec(`create binding using select /*+ use_index(t, a) */ * from t where a<10`)
|
|
check("", "select * from `test` . `t` where `a` < ?", "SELECT /*+ use_index(`t` `a`)*/ * FROM `test`.`t` WHERE `a` < 10")
|
|
tk.MustExec(`drop binding for select * from t where a<10`)
|
|
tk.MustExec(`create global binding using select /*+ use_index(t, a) */ * from t where a in (1)`)
|
|
check("global", "select * from `test` . `t` where `a` in ( ... )", "SELECT /*+ use_index(`t` `a`)*/ * FROM `test`.`t` WHERE `a` IN (1)")
|
|
tk.MustExec(`drop global binding for select * from t where a in (1)`)
|
|
tk.MustExec(`create global binding using select /*+ use_index(t, a) */ * from t where a in (1,2,3)`)
|
|
check("global", "select * from `test` . `t` where `a` in ( ... )", "SELECT /*+ use_index(`t` `a`)*/ * FROM `test`.`t` WHERE `a` IN (1,2,3)")
|
|
tk.MustExec(`drop global binding for select * from t where a in (1,2,3)`)
|
|
}
|
|
|
|
func TestDropBindBySQLDigest(t *testing.T) {
|
|
store, dom := testkit.CreateMockStoreAndDomain(t)
|
|
tk := testkit.NewTestKit(t, store)
|
|
tk.MustExec("use test")
|
|
tk.MustExec("drop table if exists t")
|
|
tk.MustExec("create table t(pk int primary key, a int, b int, key(a), key(b))")
|
|
|
|
cases := []struct {
|
|
origin string
|
|
hint string
|
|
}{
|
|
// agg hints
|
|
{"select count(1) from t", "select /*+ hash_agg() */ count(1) from t"},
|
|
{"select count(1) from t", "select /*+ stream_agg() */ count(1) from t"},
|
|
// join hints
|
|
{"select * from t t1, t t2 where t1.a=t2.a", "select /*+ merge_join(t1, t2) */ * from t t1, t t2 where t1.a=t2.a"},
|
|
{"select * from t t1, t t2 where t1.a=t2.a", "select /*+ tidb_smj(t1, t2) */ * from t t1, t t2 where t1.a=t2.a"},
|
|
{"select * from t t1, t t2 where t1.a=t2.a", "select /*+ hash_join(t1, t2) */ * from t t1, t t2 where t1.a=t2.a"},
|
|
{"select * from t t1, t t2 where t1.a=t2.a", "select /*+ tidb_hj(t1, t2) */ * from t t1, t t2 where t1.a=t2.a"},
|
|
{"select * from t t1, t t2 where t1.a=t2.a", "select /*+ inl_join(t1, t2) */ * from t t1, t t2 where t1.a=t2.a"},
|
|
{"select * from t t1, t t2 where t1.a=t2.a", "select /*+ tidb_inlj(t1, t2) */ * from t t1, t t2 where t1.a=t2.a"},
|
|
{"select * from t t1, t t2 where t1.a=t2.a", "select /*+ inl_hash_join(t1, t2) */ * from t t1, t t2 where t1.a=t2.a"},
|
|
// index hints
|
|
{"select * from t", "select * from t use index(primary)"},
|
|
{"select * from t", "select /*+ use_index(primary) */ * from t"},
|
|
{"select * from t", "select * from t use index(a)"},
|
|
{"select * from t", "select /*+ use_index(a) */ * from t use index(a)"},
|
|
{"select * from t", "select * from t use index(b)"},
|
|
{"select * from t", "select /*+ use_index(b) */ * from t use index(b)"},
|
|
{"select a, b from t where a=1 or b=1", "select /*+ use_index_merge(t, a, b) */ a, b from t where a=1 or b=1"},
|
|
{"select * from t where a=1", "select /*+ ignore_index(t, a) */ * from t where a=1"},
|
|
// push-down hints
|
|
{"select * from t limit 10", "select /*+ limit_to_cop() */ * from t limit 10"},
|
|
{"select a, count(*) from t group by a", "select /*+ agg_to_cop() */ a, count(*) from t group by a"},
|
|
// index-merge hints
|
|
{"select a, b from t where a>1 or b>1", "select /*+ no_index_merge() */ a, b from t where a>1 or b>1"},
|
|
{"select a, b from t where a>1 or b>1", "select /*+ use_index_merge(t, a, b) */ a, b from t where a>1 or b>1"},
|
|
// runtime hints
|
|
{"select * from t", "select /*+ memory_quota(1024 MB) */ * from t"},
|
|
{"select * from t", "select /*+ max_execution_time(1000) */ * from t"},
|
|
{"select * from t", "select /*+ set_var(tikv_client_read_timeout=1000) */ * from t"},
|
|
// storage hints
|
|
{"select * from t", "select /*+ read_from_storage(tikv[t]) */ * from t"},
|
|
// others
|
|
{"select t1.a, t1.b from t t1 where t1.a in (select t2.a from t t2)", "select /*+ use_toja(true) */ t1.a, t1.b from t t1 where t1.a in (select t2.a from t t2)"},
|
|
}
|
|
|
|
h := dom.BindHandle()
|
|
// global scope
|
|
for _, c := range cases {
|
|
internal.UtilCleanBindingEnv(tk, dom)
|
|
sql := "create global binding for " + c.origin + " using " + c.hint
|
|
tk.MustExec(sql)
|
|
h.LoadFromStorageToCache(true)
|
|
res := tk.MustQuery(`show global bindings`).Rows()
|
|
|
|
require.Equal(t, len(res), 1)
|
|
require.Equal(t, len(res[0]), 11)
|
|
drop := fmt.Sprintf("drop global binding for sql digest '%s'", res[0][9])
|
|
tk.MustExec(drop)
|
|
require.NoError(t, h.GCGlobalBinding())
|
|
h.LoadFromStorageToCache(true)
|
|
tk.MustQuery("show global bindings").Check(testkit.Rows())
|
|
}
|
|
|
|
// session scope
|
|
for _, c := range cases {
|
|
internal.UtilCleanBindingEnv(tk, dom)
|
|
sql := "create binding for " + c.origin + " using " + c.hint
|
|
tk.MustExec(sql)
|
|
res := tk.MustQuery(`show bindings`).Rows()
|
|
|
|
require.Equal(t, len(res), 1)
|
|
require.Equal(t, len(res[0]), 11)
|
|
drop := fmt.Sprintf("drop binding for sql digest '%s'", res[0][9])
|
|
tk.MustExec(drop)
|
|
require.NoError(t, h.GCGlobalBinding())
|
|
tk.MustQuery("show bindings").Check(testkit.Rows())
|
|
}
|
|
|
|
// exception cases
|
|
tk.MustGetErrMsg(fmt.Sprintf("drop binding for sql digest '%s'", ""), "sql digest is empty")
|
|
}
|
|
|
|
func TestJoinOrderHintWithBinding(t *testing.T) {
|
|
store := testkit.CreateMockStore(t)
|
|
|
|
tk := testkit.NewTestKit(t, store)
|
|
tk.MustExec("use test")
|
|
tk.MustExec("drop table if exists t, t1, t2, t3;")
|
|
tk.MustExec("create table t(a int, b int, key(a));")
|
|
tk.MustExec("create table t1(a int, b int, key(a));")
|
|
tk.MustExec("create table t2(a int, b int, key(a));")
|
|
tk.MustExec("create table t3(a int, b int, key(a));")
|
|
|
|
tk.MustExec("create global binding for select * from t1 join t2 on t1.a=t2.a left join t3 on t2.b=t3.b using select /*+ leading(t2) */ * from t1 join t2 on t1.a=t2.a left join t3 on t2.b=t3.b")
|
|
tk.MustExec("select * from t1 join t2 on t1.a=t2.a left join t3 on t2.b=t3.b")
|
|
tk.MustQuery("select @@last_plan_from_binding").Check(testkit.Rows("1"))
|
|
res := tk.MustQuery("show global bindings").Rows()
|
|
require.Equal(t, res[0][0], "select * from ( `test` . `t1` join `test` . `t2` on `t1` . `a` = `t2` . `a` ) left join `test` . `t3` on `t2` . `b` = `t3` . `b`")
|
|
|
|
tk.MustExec("drop global binding for select * from t1 join t2 on t1.a=t2.a join t3 on t2.b=t3.b")
|
|
}
|
|
|
|
func TestNormalizeStmtForBinding(t *testing.T) {
|
|
tests := []struct {
|
|
sql string
|
|
normalized string
|
|
digest string
|
|
}{
|
|
{"select 1 from b where (x,y) in ((1, 3), ('3', 1))", "select ? from `b` where row ( `x` , `y` ) in ( ... )", "ab6c607d118c24030807f8d1c7c846ec23e3b752fd88ed763bb8e26fbfa56a83"},
|
|
{"select 1 from b where (x,y) in ((1, 3), ('3', 1), (2, 3))", "select ? from `b` where row ( `x` , `y` ) in ( ... )", "ab6c607d118c24030807f8d1c7c846ec23e3b752fd88ed763bb8e26fbfa56a83"},
|
|
{"select 1 from b where (x,y) in ((1, 3), ('3', 1), (2, 3),('x', 'y'))", "select ? from `b` where row ( `x` , `y` ) in ( ... )", "ab6c607d118c24030807f8d1c7c846ec23e3b752fd88ed763bb8e26fbfa56a83"},
|
|
{"select 1 from b where (x,y) in ((1, 3), ('3', 1), (2, 3),('x', 'y'),('x', 'y'))", "select ? from `b` where row ( `x` , `y` ) in ( ... )", "ab6c607d118c24030807f8d1c7c846ec23e3b752fd88ed763bb8e26fbfa56a83"},
|
|
{"select 1 from b where (x) in ((1), ('3'), (2),('x'),('x'))", "select ? from `b` where ( `x` ) in ( ( ... ) )", "03e6e1eb3d76b69363922ff269284b359ca73351001ba0e82d3221c740a6a14c"},
|
|
{"select 1 from b where (x) in ((1), ('3'), (2),('x'))", "select ? from `b` where ( `x` ) in ( ( ... ) )", "03e6e1eb3d76b69363922ff269284b359ca73351001ba0e82d3221c740a6a14c"},
|
|
}
|
|
for _, test := range tests {
|
|
stmt, _, _ := internal.UtilNormalizeWithDefaultDB(t, test.sql)
|
|
n, digest := norm.NormalizeStmtForBinding(stmt, norm.WithFuzz(true))
|
|
require.Equal(t, test.normalized, n)
|
|
require.Equal(t, test.digest, digest)
|
|
}
|
|
}
|
|
|
|
func showBinding(tk *testkit.TestKit, showStmt string) [][]any {
|
|
rows := tk.MustQuery(showStmt).Sort().Rows()
|
|
result := make([][]any, len(rows))
|
|
for i, r := range rows {
|
|
result[i] = append(result[i], r[:4]...)
|
|
result[i] = append(result[i], r[8:10]...)
|
|
}
|
|
return result
|
|
}
|
|
|
|
func removeAllBindings(tk *testkit.TestKit, global bool) {
|
|
scope := "session"
|
|
if global {
|
|
scope = "global"
|
|
}
|
|
res := showBinding(tk, fmt.Sprintf("show %v bindings", scope))
|
|
for _, r := range res {
|
|
if r[4] == "builtin" {
|
|
continue
|
|
}
|
|
tk.MustExec(fmt.Sprintf("drop %v binding for sql digest '%v'", scope, r[5]))
|
|
}
|
|
tk.MustQuery(fmt.Sprintf("show %v bindings", scope)).Check(testkit.Rows()) // empty
|
|
}
|
|
|
|
func testFuzzyBindingHints(t *testing.T) {
|
|
store := testkit.CreateMockStore(t)
|
|
tk := testkit.NewTestKit(t, store)
|
|
tk.MustExec(`use test`)
|
|
|
|
for _, db := range []string{"db1", "db2", "db3"} {
|
|
tk.MustExec(`create database ` + db)
|
|
tk.MustExec(`use ` + db)
|
|
tk.MustExec(`create table t1 (a int, b int, c int, d int, key(a), key(b), key(c), key(d))`)
|
|
tk.MustExec(`create table t2 (a int, b int, c int, d int, key(a), key(b), key(c), key(d))`)
|
|
tk.MustExec(`create table t3 (a int, b int, c int, d int, key(a), key(b), key(c), key(d))`)
|
|
}
|
|
tk.MustExec(`set @@tidb_opt_enable_fuzzy_binding=1`)
|
|
|
|
for _, c := range []struct {
|
|
binding string
|
|
qTemplate string
|
|
}{
|
|
// use index
|
|
{`create global binding using select /*+ use_index(t1, c) */ * from *.t1 where a=1`,
|
|
`select * from %st1 where a=1000`},
|
|
{`create global binding using select /*+ use_index(t1, c) */ * from *.t1 where d<1`,
|
|
`select * from %st1 where d<10000`},
|
|
{`create global binding using select /*+ use_index(t1, c) */ * from *.t1, *.t2 where t1.d<1`,
|
|
`select * from %st1, t2 where t1.d<100`},
|
|
{`create global binding using select /*+ use_index(t1, c) */ * from *.t1, *.t2 where t1.d<1`,
|
|
`select * from t1, %st2 where t1.d<100`},
|
|
{`create global binding using select /*+ use_index(t1, c), use_index(t2, a) */ * from *.t1, *.t2 where t1.d<1`,
|
|
`select * from %st1, t2 where t1.d<100`},
|
|
{`create global binding using select /*+ use_index(t1, c), use_index(t2, a) */ * from *.t1, *.t2 where t1.d<1`,
|
|
`select * from t1, %st2 where t1.d<100`},
|
|
{`create global binding using select /*+ use_index(t1, c), use_index(t2, a) */ * from *.t1, *.t2, *.t3 where t1.d<1`,
|
|
`select * from %st1, t2, t3 where t1.d<100`},
|
|
{`create global binding using select /*+ use_index(t1, c), use_index(t2, a) */ * from *.t1, *.t2, *.t3 where t1.d<1`,
|
|
`select * from t1, t2, %st3 where t1.d<100`},
|
|
|
|
// ignore index
|
|
{`create global binding using select /*+ ignore_index(t1, b) */ * from *.t1 where b=1`,
|
|
`select * from %st1 where b=1000`},
|
|
{`create global binding using select /*+ ignore_index(t1, b) */ * from *.t1 where b>1`,
|
|
`select * from %st1 where b>1000`},
|
|
{`create global binding using select /*+ ignore_index(t1, b) */ * from *.t1 where b in (1,2)`,
|
|
`select * from %st1 where b in (1)`},
|
|
{`create global binding using select /*+ ignore_index(t1, b) */ * from *.t1 where b in (1,2)`,
|
|
`select * from %st1 where b in (1,2,3,4,5)`},
|
|
|
|
// order index hint
|
|
{`create global binding using select /*+ order_index(t1, a) */ a from *.t1 where a<10 order by a limit 10`,
|
|
`select a from %st1 where a<10000 order by a limit 10`},
|
|
{`create global binding using select /*+ order_index(t1, b) */ b from *.t1 where b>10 order by b limit 1111`,
|
|
`select b from %st1 where b>2 order by b limit 10`},
|
|
|
|
// no order index hint
|
|
{`create global binding using select /*+ no_order_index(t1, c) */ c from *.t1 where c<10 order by c limit 10`,
|
|
`select c from %st1 where c<10000 order by c limit 10`},
|
|
{`create global binding using select /*+ no_order_index(t1, d) */ d from *.t1 where d>10 order by d limit 1111`,
|
|
`select d from %st1 where d>2 order by d limit 10`},
|
|
|
|
// agg hint
|
|
{`create global binding using select /*+ hash_agg() */ count(*) from *.t1 group by a`,
|
|
`select count(*) from %st1 group by a`},
|
|
{`create global binding using select /*+ stream_agg() */ count(*) from *.t1 group by b`,
|
|
`select count(*) from %st1 group by b`},
|
|
|
|
// to_cop hint
|
|
{`create global binding using select /*+ agg_to_cop() */ sum(a) from *.t1`,
|
|
`select sum(a) from %st1`},
|
|
{`create global binding using select /*+ limit_to_cop() */ a from *.t1 limit 10`,
|
|
`select a from %st1 limit 101`},
|
|
|
|
// index merge hint
|
|
{`create global binding using select /*+ use_index_merge(t1, c, d) */ * from *.t1 where c=1 or d=1`,
|
|
`select * from %st1 where c=1000 or d=1000`},
|
|
{`create global binding using select /*+ no_index_merge() */ * from *.t1 where a=1 or b=1`,
|
|
`select * from %st1 where a=1000 or b=1000`},
|
|
|
|
// join type hint
|
|
{`create global binding using select /*+ hash_join(t1) */ * from *.t1, *.t2 where t1.a=t2.a`,
|
|
`select * from %st1, t2 where t1.a=t2.a`},
|
|
{`create global binding using select /*+ hash_join(t2) */ * from *.t1, *.t2 where t1.a=t2.a`,
|
|
`select * from t1, %st2 where t1.a=t2.a`},
|
|
{`create global binding using select /*+ hash_join(t2) */ * from *.t1, *.t2, *.t3 where t1.a=t2.a and t3.b=t2.b`,
|
|
`select * from t1, %st2, t3 where t1.a=t2.a and t3.b=t2.b`},
|
|
{`create global binding using select /*+ hash_join_build(t1) */ * from *.t1, *.t2 where t1.a=t2.a`,
|
|
`select * from t1, %st2 where t1.a=t2.a`},
|
|
{`create global binding using select /*+ hash_join_probe(t1) */ * from *.t1, *.t2 where t1.a=t2.a`,
|
|
`select * from t1, %st2 where t1.a=t2.a`},
|
|
{`create global binding using select /*+ merge_join(t1) */ * from *.t1, *.t2 where t1.a=t2.a`,
|
|
`select * from %st1, t2 where t1.a=t2.a`},
|
|
{`create global binding using select /*+ merge_join(t2) */ * from *.t1, *.t2 where t1.a=t2.a`,
|
|
`select * from t1, %st2 where t1.a=t2.a`},
|
|
{`create global binding using select /*+ merge_join(t2) */ * from *.t1, *.t2, *.t3 where t1.a=t2.a and t3.b=t2.b`,
|
|
`select * from t1, %st2, t3 where t1.a=t2.a and t3.b=t2.b`},
|
|
{`create global binding using select /*+ inl_join(t1) */ * from *.t1, *.t2 where t1.a=t2.a`,
|
|
`select * from %st1, t2 where t1.a=t2.a`},
|
|
{`create global binding using select /*+ inl_join(t2) */ * from *.t1, *.t2 where t1.a=t2.a`,
|
|
`select * from t1, %st2 where t1.a=t2.a`},
|
|
{`create global binding using select /*+ inl_join(t2) */ * from *.t1, *.t2, *.t3 where t1.a=t2.a and t3.b=t2.b`,
|
|
`select * from t1, %st2, t3 where t1.a=t2.a and t3.b=t2.b`},
|
|
|
|
// no join type hint
|
|
{`create global binding using select /*+ no_hash_join(t1) */ * from *.t1, *.t2 where t1.b=t2.b`,
|
|
`select * from %st1, t2 where t1.b=t2.b`},
|
|
{`create global binding using select /*+ no_hash_join(t2) */ * from *.t1, *.t2 where t1.c=t2.c`,
|
|
`select * from t1, %st2 where t1.c=t2.c`},
|
|
{`create global binding using select /*+ no_hash_join(t2) */ * from *.t1, *.t2, *.t3 where t1.a=t2.a and t3.b=t2.b`,
|
|
`select * from t1, %st2, t3 where t1.a=t2.a and t3.b=t2.b`},
|
|
{`create global binding using select /*+ no_merge_join(t1) */ * from *.t1, *.t2 where t1.b=t2.b`,
|
|
`select * from %st1, t2 where t1.b=t2.b`},
|
|
{`create global binding using select /*+ no_merge_join(t2) */ * from *.t1, *.t2 where t1.c=t2.c`,
|
|
`select * from t1, %st2 where t1.c=t2.c`},
|
|
{`create global binding using select /*+ no_merge_join(t2) */ * from *.t1, *.t2, *.t3 where t1.a=t2.a and t3.b=t2.b`,
|
|
`select * from t1, %st2, t3 where t1.a=t2.a and t3.b=t2.b`},
|
|
{`create global binding using select /*+ no_index_join(t1) */ * from *.t1, *.t2 where t1.b=t2.b`,
|
|
`select * from %st1, t2 where t1.b=t2.b`},
|
|
{`create global binding using select /*+ no_index_join(t2) */ * from *.t1, *.t2 where t1.c=t2.c`,
|
|
`select * from t1, %st2 where t1.c=t2.c`},
|
|
{`create global binding using select /*+ no_index_join(t2) */ * from *.t1, *.t2, *.t3 where t1.a=t2.a and t3.b=t2.b`,
|
|
`select * from t1, %st2, t3 where t1.a=t2.a and t3.b=t2.b`},
|
|
|
|
// join order hint
|
|
{`create global binding using select /*+ leading(t2) */ * from *.t1, *.t2 where t1.b=t2.b`,
|
|
`select * from %st1, t2 where t1.b=t2.b`},
|
|
{`create global binding using select /*+ leading(t2) */ * from *.t1, *.t2 where t1.c=t2.c`,
|
|
`select * from t1, %st2 where t1.c=t2.c`},
|
|
{`create global binding using select /*+ leading(t2, t1) */ * from *.t1, *.t2 where t1.c=t2.c`,
|
|
`select * from t1, %st2 where t1.c=t2.c`},
|
|
{`create global binding using select /*+ leading(t1, t2) */ * from *.t1, *.t2 where t1.c=t2.c`,
|
|
`select * from t1, %st2 where t1.c=t2.c`},
|
|
{`create global binding using select /*+ leading(t1) */ * from *.t1, *.t2, *.t3 where t1.a=t2.a and t3.b=t2.b`,
|
|
`select * from t1, %st2, t3 where t1.a=t2.a and t3.b=t2.b`},
|
|
{`create global binding using select /*+ leading(t2) */ * from *.t1, *.t2, *.t3 where t1.a=t2.a and t3.b=t2.b`,
|
|
`select * from t1, %st2, t3 where t1.a=t2.a and t3.b=t2.b`},
|
|
{`create global binding using select /*+ leading(t2,t3) */ * from *.t1, *.t2, *.t3 where t1.a=t2.a and t3.b=t2.b`,
|
|
`select * from t1, %st2, t3 where t1.a=t2.a and t3.b=t2.b`},
|
|
{`create global binding using select /*+ leading(t2,t3,t1) */ * from *.t1, *.t2, *.t3 where t1.a=t2.a and t3.b=t2.b`,
|
|
`select * from t1, %st2, t3 where t1.a=t2.a and t3.b=t2.b`},
|
|
} {
|
|
removeAllBindings(tk, true)
|
|
tk.MustExec(c.binding)
|
|
for _, currentDB := range []string{"db1", "db2", "db3"} {
|
|
tk.MustExec(`use ` + currentDB)
|
|
for _, db := range []string{"db1.", "db2.", "db3.", ""} {
|
|
query := fmt.Sprintf(c.qTemplate, db)
|
|
tk.MustExec(query)
|
|
tk.MustQuery(`show warnings`).Check(testkit.Rows()) // no warning
|
|
tk.MustExec(query)
|
|
tk.MustQuery(`select @@last_plan_from_binding`).Check(testkit.Rows("1"))
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestFuzzyBindingHints(t *testing.T) {
|
|
testFuzzyBindingHints(t)
|
|
}
|
|
|
|
func TestFuzzyBindingHintsWithSourceReturning(t *testing.T) {
|
|
store := testkit.CreateMockStore(t)
|
|
tk := testkit.NewTestKit(t, store)
|
|
tk.MustExec(`use test`)
|
|
|
|
for _, db := range []string{"db1", "db2", "db3"} {
|
|
tk.MustExec(`create database ` + db)
|
|
tk.MustExec(`use ` + db)
|
|
tk.MustExec(`create table t1 (a int, b int, c int, d int, key(a), key(b), key(c), key(d))`)
|
|
tk.MustExec(`create table t2 (a int, b int, c int, d int, key(a), key(b), key(c), key(d))`)
|
|
tk.MustExec(`create table t3 (a int, b int, c int, d int, key(a), key(b), key(c), key(d))`)
|
|
}
|
|
tk.MustExec(`set @@tidb_opt_enable_fuzzy_binding=1`)
|
|
|
|
for _, c := range []struct {
|
|
binding string
|
|
qTemplate string
|
|
}{
|
|
// use index
|
|
{`create global binding using select /*+ use_index(t1, c) */ * from *.t1 where a=1`,
|
|
`select * from %st1 where a=1000`},
|
|
|
|
// ignore index
|
|
{`create global binding using select /*+ ignore_index(t1, b) */ * from *.t1 where b=1`,
|
|
`select * from %st1 where b=1000`},
|
|
|
|
// order index hint
|
|
{`create global binding using select /*+ order_index(t1, a) */ a from *.t1 where a<10 order by a limit 10`,
|
|
`select a from %st1 where a<10000 order by a limit 10`},
|
|
} {
|
|
removeAllBindings(tk, true)
|
|
tk.MustExec(c.binding)
|
|
for _, currentDB := range []string{"db1", "db2", "db3"} {
|
|
tk.MustExec(`use ` + currentDB)
|
|
for _, db := range []string{"db1.", "db2.", "db3.", ""} {
|
|
query := fmt.Sprintf(c.qTemplate, db)
|
|
tk.MustExec(query)
|
|
tk.MustQuery(`show warnings`).Check(testkit.Rows()) // no warning
|
|
sctx := tk.Session()
|
|
sctx.SetValue(bindinfo.GetBindingReturnNil, true)
|
|
tk.MustExec(query)
|
|
sctx.ClearValue(bindinfo.GetBindingReturnNil)
|
|
tk.MustQuery(`select @@last_plan_from_binding`).Check(testkit.Rows("1"))
|
|
bindinfo.GetBindingReturnNilBool.Store(false)
|
|
}
|
|
}
|
|
}
|
|
}
|