372 lines
17 KiB
Go
372 lines
17 KiB
Go
// Copyright 2021 PingCAP, Inc.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package bindinfo_test
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"strconv"
|
|
"strings"
|
|
"testing"
|
|
"time"
|
|
|
|
"github.com/pingcap/tidb/pkg/bindinfo"
|
|
"github.com/pingcap/tidb/pkg/parser"
|
|
"github.com/pingcap/tidb/pkg/parser/auth"
|
|
"github.com/pingcap/tidb/pkg/server"
|
|
"github.com/pingcap/tidb/pkg/testkit"
|
|
"github.com/pingcap/tidb/pkg/util/stmtsummary"
|
|
"github.com/stretchr/testify/require"
|
|
)
|
|
|
|
func TestGlobalAndSessionBindingBothExist(t *testing.T) {
|
|
store := testkit.CreateMockStore(t)
|
|
|
|
tk := testkit.NewTestKit(t, store)
|
|
|
|
tk.MustExec("use test")
|
|
tk.MustExec("drop table if exists t1")
|
|
tk.MustExec("drop table if exists t2")
|
|
tk.MustExec("create table t1(id int)")
|
|
tk.MustExec("create table t2(id int)")
|
|
tk.MustHavePlan("SELECT * from t1,t2 where t1.id = t2.id", "HashJoin")
|
|
tk.MustHavePlan("SELECT /*+ TIDB_SMJ(t1, t2) */ * from t1,t2 where t1.id = t2.id", "MergeJoin")
|
|
|
|
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")
|
|
|
|
// Test 'tidb_use_plan_baselines'
|
|
tk.MustExec("set @@tidb_use_plan_baselines = 0")
|
|
tk.MustHavePlan("SELECT * from t1,t2 where t1.id = t2.id", "HashJoin")
|
|
tk.MustExec("set @@tidb_use_plan_baselines = 1")
|
|
|
|
// Test 'drop global binding'
|
|
tk.MustHavePlan("SELECT * from t1,t2 where t1.id = t2.id", "MergeJoin")
|
|
tk.MustExec("drop global binding for SELECT * from t1,t2 where t1.id = t2.id")
|
|
tk.MustHavePlan("SELECT * from t1,t2 where t1.id = t2.id", "HashJoin")
|
|
|
|
// Test the case when global and session binding both exist
|
|
// PART1 : session binding should totally cover global binding
|
|
// use merge join as session binding here since the optimizer will choose hash join for this stmt in default
|
|
tk.MustExec("create global binding for SELECT * from t1,t2 where t1.id = t2.id using SELECT /*+ TIDB_HJ(t1, t2) */ * from t1,t2 where t1.id = t2.id")
|
|
tk.MustHavePlan("SELECT * from t1,t2 where t1.id = t2.id", "HashJoin")
|
|
tk.MustExec("create 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")
|
|
tk.MustHavePlan("SELECT * from t1,t2 where t1.id = t2.id", "MergeJoin")
|
|
tk.MustExec("drop global binding for SELECT * from t1,t2 where t1.id = t2.id")
|
|
tk.MustHavePlan("SELECT * from t1,t2 where t1.id = t2.id", "MergeJoin")
|
|
}
|
|
|
|
func TestSessionBinding(t *testing.T) {
|
|
store := testkit.CreateMockStore(t)
|
|
tk := testkit.NewTestKit(t, store)
|
|
|
|
for _, testSQL := range testSQLs {
|
|
utilCleanBindingEnv(tk)
|
|
tk.MustExec("use test")
|
|
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 session " + testSQL.createSQL)
|
|
require.NoErrorf(t, err, "testSQL %+v", testSQL)
|
|
|
|
if testSQL.overlaySQL != "" {
|
|
_, err = tk.Exec("create session " + testSQL.overlaySQL)
|
|
require.NoErrorf(t, err, "testSQL %+v", testSQL)
|
|
}
|
|
|
|
handle := tk.Session().Value(bindinfo.SessionBindInfoKeyType).(bindinfo.SessionBindingHandle)
|
|
stmt, err := parser.New().ParseOneStmt(testSQL.originSQL, "", "")
|
|
require.NoErrorf(t, err, "testSQL %+v", testSQL)
|
|
|
|
_, noDBDigest := bindinfo.NormalizeStmtForBinding(stmt, "", true)
|
|
binding, matched := handle.MatchSessionBinding(tk.Session(), noDBDigest, bindinfo.CollectTableNames(stmt))
|
|
require.Truef(t, matched, "testSQL %+v", testSQL)
|
|
require.Equalf(t, testSQL.originSQL, binding.OriginalSQL, "testSQL %+v", testSQL)
|
|
require.Equalf(t, testSQL.bindSQL, binding.BindSQL, "testSQL %+v", testSQL)
|
|
require.Equalf(t, "test", binding.Db, "testSQL %+v", testSQL)
|
|
require.Equalf(t, bindinfo.StatusEnabled, binding.Status, "testSQL %+v", testSQL)
|
|
require.NotNilf(t, binding.Charset, "testSQL %+v", testSQL)
|
|
require.NotNilf(t, binding.Collation, "testSQL %+v", testSQL)
|
|
require.NotNilf(t, binding.CreateTime, "testSQL %+v", testSQL)
|
|
require.NotNilf(t, binding.UpdateTime, "testSQL %+v", testSQL)
|
|
|
|
rs, err := tk.Exec("show global bindings")
|
|
require.NoErrorf(t, err, "testSQL %+v", testSQL)
|
|
chk := rs.NewChunk(nil)
|
|
err = rs.Next(context.TODO(), chk)
|
|
require.NoErrorf(t, err, "testSQL %+v", testSQL)
|
|
require.Equalf(t, 0, chk.NumRows(), "testSQL %+v", testSQL)
|
|
|
|
rs, err = tk.Exec("show session bindings")
|
|
require.NoErrorf(t, err, "testSQL %+v", testSQL)
|
|
chk = rs.NewChunk(nil)
|
|
err = rs.Next(context.TODO(), chk)
|
|
require.NoErrorf(t, err, "testSQL %+v", testSQL)
|
|
require.Equal(t, 1, chk.NumRows())
|
|
row := chk.GetRow(0)
|
|
require.Equalf(t, testSQL.originSQL, row.GetString(0), "testSQL %+v", testSQL)
|
|
require.Equalf(t, testSQL.bindSQL, row.GetString(1), "testSQL %+v", testSQL)
|
|
require.Equalf(t, "test", row.GetString(2), "testSQL %+v", testSQL)
|
|
require.Equalf(t, bindinfo.StatusEnabled, row.GetString(3), "testSQL %+v", testSQL)
|
|
require.NotNilf(t, row.GetTime(4), "testSQL %+v", testSQL)
|
|
require.NotNilf(t, row.GetTime(5), "testSQL %+v", testSQL)
|
|
require.NotNilf(t, row.GetString(6), "testSQL %+v", testSQL)
|
|
require.NotNilf(t, row.GetString(7), "testSQL %+v", testSQL)
|
|
|
|
_, err = tk.Exec("drop session " + testSQL.dropSQL)
|
|
require.NoErrorf(t, err, "testSQL %+v", testSQL)
|
|
_, noDBDigest = bindinfo.NormalizeStmtForBinding(stmt, "", true)
|
|
_, matched = handle.MatchSessionBinding(tk.Session(), noDBDigest, bindinfo.CollectTableNames(stmt))
|
|
require.Falsef(t, matched, "testSQL %+v", testSQL) // dropped
|
|
}
|
|
}
|
|
|
|
func TestShowGlobalBindings(t *testing.T) {
|
|
store := testkit.CreateMockStore(t)
|
|
|
|
tk := testkit.NewTestKit(t, store)
|
|
stmtsummary.StmtSummaryByDigestMap.Clear()
|
|
tk.MustExec("drop database if exists SPM")
|
|
tk.MustExec("create database SPM")
|
|
tk.MustExec("use SPM")
|
|
tk.MustExec("create table t(a int, b int, key(a))")
|
|
tk.MustExec("create table t0(a int, b int, key(a))")
|
|
require.NoError(t, tk.Session().Auth(&auth.UserIdentity{Username: "root", Hostname: "%"}, nil, nil, nil))
|
|
rows := tk.MustQuery("show global bindings").Rows()
|
|
require.Len(t, rows, 0)
|
|
// Simulate existing bindings in the mysql.bind_info.
|
|
tk.MustExec("create global binding using select * from `spm` . `t` USE INDEX (`a`)")
|
|
tk.MustExec("create global binding using select * from `spm` . `t0` USE INDEX (`a`)")
|
|
tk.MustExec("create global binding using select /*+ use_index(`t` `a`)*/ * from `spm` . `t`")
|
|
tk.MustExec("create global binding using select /*+ use_index(`t0` `a`)*/ * from `spm` . `t0`")
|
|
|
|
tk.MustExec("admin reload bindings")
|
|
rows = tk.MustQuery("show global bindings").Rows()
|
|
require.Len(t, rows, 2)
|
|
require.Equal(t, "select * from `spm` . `t0`", rows[0][0])
|
|
require.Equal(t, "select * from `spm` . `t`", rows[1][0])
|
|
|
|
rows = tk.MustQuery("show session bindings").Rows()
|
|
require.Len(t, rows, 0)
|
|
tk.MustExec("create session binding for select a from t using select a from t")
|
|
tk.MustExec("create session binding for select a from t0 using select a from t0")
|
|
tk.MustExec("create session binding for select b from t using select b from t")
|
|
tk.MustExec("create session binding for select b from t0 using select b from t0")
|
|
rows = tk.MustQuery("show session bindings").Rows()
|
|
require.Len(t, rows, 4)
|
|
require.Equal(t, "select `b` from `spm` . `t0`", rows[0][0])
|
|
require.Equal(t, "select `b` from `spm` . `t`", rows[1][0])
|
|
require.Equal(t, "select `a` from `spm` . `t0`", rows[2][0])
|
|
require.Equal(t, "select `a` from `spm` . `t`", rows[3][0])
|
|
}
|
|
|
|
func TestDuplicateBindings(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 * from t use index(idx);")
|
|
rows := tk.MustQuery("show global bindings").Rows()
|
|
require.Len(t, rows, 1)
|
|
createTime := rows[0][4]
|
|
time.Sleep(time.Millisecond)
|
|
tk.MustExec("create global binding for select * from t using select * from t use index(idx);")
|
|
rows = tk.MustQuery("show global bindings").Rows()
|
|
require.Len(t, rows, 1)
|
|
require.False(t, createTime == rows[0][4])
|
|
|
|
tk.MustExec("create session binding for select * from t using select * from t use index(idx);")
|
|
rows = tk.MustQuery("show session bindings").Rows()
|
|
require.Len(t, rows, 1)
|
|
createTime = rows[0][4]
|
|
time.Sleep(time.Millisecond)
|
|
tk.MustExec("create session binding for select * from t using select * from t use index(idx);")
|
|
rows = tk.MustQuery("show session bindings").Rows()
|
|
require.Len(t, rows, 1)
|
|
require.False(t, createTime == rows[0][4])
|
|
}
|
|
|
|
func TestDefaultDB(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, index idx(a))")
|
|
tk.MustExec("create global binding for select * from test.t using select * from test.t use index(idx)")
|
|
tk.MustExec("use mysql")
|
|
tk.MustQuery("select * from test.t")
|
|
// Even in another database, we could still use the bindings.
|
|
require.Equal(t, "t:idx", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
|
|
tk.MustExec("drop global binding for select * from test.t")
|
|
tk.MustQuery("show global bindings").Check(testkit.Rows())
|
|
|
|
tk.MustExec("use test")
|
|
tk.MustExec("create session binding for select * from test.t using select * from test.t use index(idx)")
|
|
tk.MustExec("use mysql")
|
|
tk.MustQuery("select * from test.t")
|
|
// Even in another database, we could still use the bindings.
|
|
require.Equal(t, "t:idx", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
|
|
tk.MustExec("drop session binding for select * from test.t")
|
|
tk.MustQuery("show session bindings").Check(testkit.Rows())
|
|
}
|
|
|
|
func TestIssue19836(t *testing.T) {
|
|
store, dom := testkit.CreateMockStoreAndDomain(t)
|
|
sv := server.CreateMockServer(t, store)
|
|
sv.SetDomain(dom)
|
|
defer sv.Close()
|
|
|
|
conn1 := server.CreateMockConn(t, sv)
|
|
tk := testkit.NewTestKitWithSession(t, store, conn1.Context().Session)
|
|
|
|
tk.MustExec("use test")
|
|
tk.MustExec("drop table if exists t")
|
|
tk.MustExec("create table t(a int, key (a));")
|
|
tk.MustExec("CREATE SESSION BINDING FOR select * from t where a = 1 limit 5, 5 USING select * from t ignore index (a) where a = 1 limit 5, 5;")
|
|
tk.MustExec("PREPARE stmt FROM 'select * from t where a = 40 limit ?, ?';")
|
|
tk.MustExec("set @a=1;")
|
|
tk.MustExec("set @b=2;")
|
|
tk.MustExec("EXECUTE stmt USING @a, @b;")
|
|
result := tk.MustQuery("explain for connection " + strconv.FormatUint(tk.Session().ShowProcess().ID, 10)).String()
|
|
// Don't check the whole output here, since the explain for connection output contains execution time, which is not fixed
|
|
// after we including open/close time in it.
|
|
require.True(t, strings.Contains(result, "TableFullScan"))
|
|
}
|
|
|
|
func TestDropSingleBindings(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, c int, index idx_a(a), index idx_b(b))")
|
|
|
|
// Test drop session bindings.
|
|
tk.MustExec("create binding for select * from t using select * from t use index(idx_a)")
|
|
tk.MustExec("create binding for select * from t using select * from t use index(idx_b)")
|
|
rows := tk.MustQuery("show bindings").Rows()
|
|
// The size of bindings is equal to one. Because for one normalized sql,
|
|
// the `create binding` clears all the origin bindings.
|
|
require.Len(t, rows, 1)
|
|
require.Equal(t, "SELECT * FROM `test`.`t` USE INDEX (`idx_b`)", rows[0][1])
|
|
tk.MustExec("drop binding for select * from t using select * from t use index(idx_a)")
|
|
rows = tk.MustQuery("show bindings").Rows()
|
|
require.Len(t, rows, 0)
|
|
tk.MustExec("drop table t")
|
|
|
|
tk.MustExec("create table t(a int, b int, c int, index idx_a(a), index idx_b(b))")
|
|
// Test drop global bindings.
|
|
tk.MustExec("create global binding for select * from t using select * from t use index(idx_a)")
|
|
tk.MustExec("create global binding for select * from t using select * from t use index(idx_b)")
|
|
rows = tk.MustQuery("show global bindings").Rows()
|
|
// The size of bindings is equal to one. Because for one normalized sql,
|
|
// the `create binding` clears all the origin bindings.
|
|
require.Len(t, rows, 1)
|
|
require.Equal(t, "SELECT * FROM `test`.`t` USE INDEX (`idx_b`)", rows[0][1])
|
|
tk.MustExec("drop global binding for select * from t using select * from t use index(idx_a)")
|
|
rows = tk.MustQuery("show global bindings").Rows()
|
|
require.Len(t, rows, 0)
|
|
tk.MustExec("drop table t")
|
|
}
|
|
|
|
func TestIssue53834(t *testing.T) {
|
|
store := testkit.CreateMockStore(t)
|
|
tk := testkit.NewTestKit(t, store)
|
|
tk.MustExec(`use test`)
|
|
tk.MustExec(`create table t (a varchar(1024))`)
|
|
tk.MustExec(`insert into t values (space(1024))`)
|
|
for range 12 {
|
|
tk.MustExec(`insert into t select * from t`)
|
|
}
|
|
oomAction := tk.MustQuery(`select @@tidb_mem_oom_action`).Rows()[0][0].(string)
|
|
defer func() {
|
|
tk.MustExec(fmt.Sprintf(`set global tidb_mem_oom_action='%v'`, oomAction))
|
|
}()
|
|
|
|
tk.MustExec(`set global tidb_mem_oom_action='cancel'`)
|
|
err := tk.ExecToErr(`replace into t select /*+ memory_quota(1 mb) */ * from t`)
|
|
require.ErrorContains(t, err, "cancelled due to exceeding the allowed memory limit")
|
|
|
|
tk.MustExec(`create binding using replace into t select /*+ memory_quota(1 mb) */ * from t`)
|
|
err = tk.ExecToErr(`replace into t select * from t`)
|
|
require.ErrorContains(t, err, "cancelled due to exceeding the allowed memory limit")
|
|
}
|
|
|
|
func TestPreparedStmt(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(`prepare stmt1 from 'select * from t'`)
|
|
tk.MustExec("execute stmt1")
|
|
require.Len(t, tk.Session().GetSessionVars().StmtCtx.IndexNames, 0)
|
|
|
|
tk.MustExec("create binding for select * from t using select * from t use index(idx)")
|
|
tk.MustExec("execute stmt1")
|
|
require.Len(t, tk.Session().GetSessionVars().StmtCtx.IndexNames, 1)
|
|
require.Equal(t, "t:idx", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
|
|
|
|
tk.MustExec("drop binding for select * from t")
|
|
tk.MustExec("execute stmt1")
|
|
require.Len(t, tk.Session().GetSessionVars().StmtCtx.IndexNames, 0)
|
|
|
|
tk.MustExec("drop table t")
|
|
tk.MustExec("create table t(a int, b int, c int, index idx_b(b), index idx_c(c))")
|
|
tk.MustExec("set @p = 1")
|
|
|
|
tk.MustExec("prepare stmt from 'delete from t where b = ? and c > ?'")
|
|
tk.MustExec("execute stmt using @p,@p")
|
|
require.Len(t, tk.Session().GetSessionVars().StmtCtx.IndexNames, 1)
|
|
require.Equal(t, "t:idx_b", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
|
|
tk.MustExec("create binding for delete from t where b = 2 and c > 2 using delete /*+ use_index(t,idx_c) */ from t where b = 2 and c > 2")
|
|
tk.MustExec("execute stmt using @p,@p")
|
|
require.Len(t, tk.Session().GetSessionVars().StmtCtx.IndexNames, 1)
|
|
require.Equal(t, "t:idx_c", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
|
|
|
|
tk.MustExec("prepare stmt from 'update t set a = 1 where b = ? and c > ?'")
|
|
tk.MustExec("execute stmt using @p,@p")
|
|
require.Len(t, tk.Session().GetSessionVars().StmtCtx.IndexNames, 1)
|
|
require.Equal(t, "t:idx_b", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
|
|
tk.MustExec("create binding for update t set a = 2 where b = 2 and c > 2 using update /*+ use_index(t,idx_c) */ t set a = 2 where b = 2 and c > 2")
|
|
tk.MustExec("execute stmt using @p,@p")
|
|
require.Len(t, tk.Session().GetSessionVars().StmtCtx.IndexNames, 1)
|
|
require.Equal(t, "t:idx_c", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
|
|
|
|
tk.MustExec("drop table if exists t1")
|
|
tk.MustExec("create table t1 like t")
|
|
tk.MustExec("prepare stmt from 'insert into t1 select * from t where t.b = ? and t.c > ?'")
|
|
tk.MustExec("execute stmt using @p,@p")
|
|
require.Len(t, tk.Session().GetSessionVars().StmtCtx.IndexNames, 1)
|
|
require.Equal(t, "t:idx_b", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
|
|
tk.MustExec("create binding for insert into t1 select * from t where t.b = 2 and t.c > 2 using insert into t1 select /*+ use_index(t,idx_c) */ * from t where t.b = 2 and t.c > 2")
|
|
tk.MustExec("execute stmt using @p,@p")
|
|
require.Len(t, tk.Session().GetSessionVars().StmtCtx.IndexNames, 1)
|
|
require.Equal(t, "t:idx_c", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
|
|
|
|
tk.MustExec("prepare stmt from 'replace into t1 select * from t where t.b = ? and t.c > ?'")
|
|
tk.MustExec("execute stmt using @p,@p")
|
|
require.Len(t, tk.Session().GetSessionVars().StmtCtx.IndexNames, 1)
|
|
require.Equal(t, "t:idx_b", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
|
|
tk.MustExec("create binding for replace into t1 select * from t where t.b = 2 and t.c > 2 using replace into t1 select /*+ use_index(t,idx_c) */ * from t where t.b = 2 and t.c > 2")
|
|
tk.MustExec("execute stmt using @p,@p")
|
|
require.Len(t, tk.Session().GetSessionVars().StmtCtx.IndexNames, 1)
|
|
require.Equal(t, "t:idx_c", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
|
|
}
|