86 lines
3.0 KiB
Go
86 lines
3.0 KiB
Go
// Copyright 2024 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 timeout
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import (
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"fmt"
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"testing"
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"github.com/pingcap/tidb/pkg/bindinfo"
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"github.com/pingcap/tidb/pkg/testkit"
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"github.com/stretchr/testify/require"
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)
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func TestLoadBindingWarn(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(`use test`)
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tk.MustExec(`create table t1 (a int)`)
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tk.MustExec(`create global binding using select * from t1`)
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tk.MustExec(`select * from t1`)
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tk.MustQuery(`show warnings`).Check(testkit.Rows()) // no warning
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sctx := tk.Session()
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sctx.SetValue(bindinfo.GetBindingReturnNilAlways, true)
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tk.MustExec(`select * from t1`)
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warnings := tk.MustQuery(`show warnings`)
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require.True(t, len(warnings.Rows()) == 1)
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sctx.ClearValue(bindinfo.GetBindingReturnNilAlways)
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}
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func TestFuzzyBindingHintsWithSourceReturningTimeout(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(`use test`)
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for _, db := range []string{"db1", "db2", "db3"} {
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tk.MustExec(`create database ` + db)
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tk.MustExec(`use ` + db)
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tk.MustExec(`create table t1 (a int, b int, c int, d int, key(a), key(b), key(c), key(d))`)
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tk.MustExec(`create table t2 (a int, b int, c int, d int, key(a), key(b), key(c), key(d))`)
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tk.MustExec(`create table t3 (a int, b int, c int, d int, key(a), key(b), key(c), key(d))`)
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}
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tk.MustExec(`set @@tidb_opt_enable_fuzzy_binding=1`)
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for _, c := range []struct {
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binding string
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qTemplate string
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}{
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// use index
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{`create global binding using select /*+ use_index(t1, c) */ * from *.t1 where a=1`,
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`select * from %st1 where a=1000`},
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} {
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tk.MustExec(c.binding)
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for _, currentDB := range []string{"db1", "db2", "db3"} {
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tk.MustExec(`use ` + currentDB)
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for _, db := range []string{"db1.", "db2.", "db3.", ""} {
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query := fmt.Sprintf(c.qTemplate, db)
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tk.MustExec(query)
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tk.MustQuery(`show warnings`).Check(testkit.Rows()) // no warning
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sctx := tk.Session()
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sctx.SetValue(bindinfo.GetBindingReturnNil, true)
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sctx.SetValue(bindinfo.GetBindingReturnNilAlways, true)
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sctx.SetValue(bindinfo.LoadBindingNothing, true)
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tk.MustExec(query)
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sctx.ClearValue(bindinfo.GetBindingReturnNil)
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sctx.ClearValue(bindinfo.GetBindingReturnNilAlways)
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sctx.ClearValue(bindinfo.LoadBindingNothing)
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tk.MustQuery(`select @@last_plan_from_binding`).Check(testkit.Rows("0"))
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bindinfo.GetBindingReturnNilBool.Store(false)
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}
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}
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}
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}
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