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bind_test.go
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// Copyright 2019 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"
"testing"
"github.com/pingcap/tidb/bindinfo"
"github.com/pingcap/tidb/config"
"github.com/pingcap/tidb/domain"
"github.com/pingcap/tidb/parser"
"github.com/pingcap/tidb/parser/auth"
"github.com/pingcap/tidb/parser/model"
"github.com/pingcap/tidb/parser/terror"
"github.com/pingcap/tidb/testkit"
"github.com/pingcap/tidb/util"
utilparser "github.com/pingcap/tidb/util/parser"
"github.com/pingcap/tidb/util/stmtsummary"
"github.com/stretchr/testify/require"
)
func TestPrepareCacheWithBinding(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec(`set tidb_enable_prepared_plan_cache=1`)
tk.MustExec("set tidb_cost_model_version=2")
tk.MustExec("use test")
tk.MustExec("drop table if exists t1, t2")
tk.MustExec("create table t1(a int, b int, c int, key idx_b(b), key idx_c(c))")
tk.MustExec("create table t2(a int, b int, c int, key idx_b(b), key idx_c(c))")
// TestDMLSQLBind
tk.MustExec("prepare stmt1 from 'delete from t1 where b = 1 and c > 1';")
tk.MustExec("execute stmt1;")
require.Equal(t, "t1:idx_b", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
tkProcess := tk.Session().ShowProcess()
ps := []*util.ProcessInfo{tkProcess}
tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
res := tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
require.True(t, tk.MustUseIndex4ExplainFor(res, "idx_b(b)"), res.Rows())
tk.MustExec("execute stmt1;")
tk.MustQuery("select @@last_plan_from_cache").Check(testkit.Rows("1"))
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")
tk.MustExec("execute stmt1;")
require.Equal(t, "t1:idx_c", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
tkProcess = tk.Session().ShowProcess()
ps = []*util.ProcessInfo{tkProcess}
tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
require.True(t, tk.MustUseIndex4ExplainFor(res, "idx_c(c)"), res.Rows())
tk.MustExec("prepare stmt2 from 'delete t1, t2 from t1 inner join t2 on t1.b = t2.b';")
tk.MustExec("execute stmt2;")
tkProcess = tk.Session().ShowProcess()
ps = []*util.ProcessInfo{tkProcess}
tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
require.True(t, tk.HasPlan4ExplainFor(res, "HashJoin"), res.Rows())
tk.MustExec("execute stmt2;")
tk.MustQuery("select @@last_plan_from_cache").Check(testkit.Rows("1"))
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")
tk.MustExec("execute stmt2;")
tkProcess = tk.Session().ShowProcess()
ps = []*util.ProcessInfo{tkProcess}
tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
require.True(t, tk.HasPlan4ExplainFor(res, "IndexJoin"), res.Rows())
tk.MustExec("prepare stmt3 from 'update t1 set a = 1 where b = 1 and c > 1';")
tk.MustExec("execute stmt3;")
require.Equal(t, "t1:idx_b", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
tkProcess = tk.Session().ShowProcess()
ps = []*util.ProcessInfo{tkProcess}
tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
require.True(t, tk.MustUseIndex4ExplainFor(res, "idx_b(b)"), res.Rows())
tk.MustExec("execute stmt3;")
tk.MustQuery("select @@last_plan_from_cache").Check(testkit.Rows("1"))
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")
tk.MustExec("execute stmt3;")
require.Equal(t, "t1:idx_c", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
tkProcess = tk.Session().ShowProcess()
ps = []*util.ProcessInfo{tkProcess}
tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
require.True(t, tk.MustUseIndex4ExplainFor(res, "idx_c(c)"), res.Rows())
tk.MustExec("prepare stmt4 from 'update t1, t2 set t1.a = 1 where t1.b = t2.b';")
tk.MustExec("execute stmt4;")
tkProcess = tk.Session().ShowProcess()
ps = []*util.ProcessInfo{tkProcess}
tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
require.True(t, tk.HasPlan4ExplainFor(res, "HashJoin"), res.Rows())
tk.MustExec("execute stmt4;")
tk.MustQuery("select @@last_plan_from_cache").Check(testkit.Rows("1"))
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")
tk.MustExec("execute stmt4;")
tkProcess = tk.Session().ShowProcess()
ps = []*util.ProcessInfo{tkProcess}
tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
require.True(t, tk.HasPlan4ExplainFor(res, "IndexJoin"), res.Rows())
tk.MustExec("prepare stmt5 from 'insert into t1 select * from t2 where t2.b = 2 and t2.c > 2';")
tk.MustExec("execute stmt5;")
require.Equal(t, "t2:idx_b", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
tkProcess = tk.Session().ShowProcess()
ps = []*util.ProcessInfo{tkProcess}
tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
require.True(t, tk.MustUseIndex4ExplainFor(res, "idx_b(b)"), res.Rows())
tk.MustExec("execute stmt5;")
tk.MustQuery("select @@last_plan_from_cache").Check(testkit.Rows("1"))
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")
tk.MustExec("execute stmt5;")
require.Equal(t, "t2:idx_b", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
tkProcess = tk.Session().ShowProcess()
ps = []*util.ProcessInfo{tkProcess}
tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
require.True(t, tk.MustUseIndex4ExplainFor(res, "idx_b(b)"), res.Rows())
tk.MustExec("drop global binding for insert into t1 select * from t2 where t2.b = 1 and t2.c > 1")
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")
tk.MustExec("execute stmt5;")
require.Equal(t, "t2:idx_c", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
tkProcess = tk.Session().ShowProcess()
ps = []*util.ProcessInfo{tkProcess}
tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
require.True(t, tk.MustUseIndex4ExplainFor(res, "idx_c(c)"), res.Rows())
tk.MustExec("prepare stmt6 from 'replace into t1 select * from t2 where t2.b = 2 and t2.c > 2';")
tk.MustExec("execute stmt6;")
require.Equal(t, "t2:idx_b", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
tkProcess = tk.Session().ShowProcess()
ps = []*util.ProcessInfo{tkProcess}
tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
require.True(t, tk.MustUseIndex4ExplainFor(res, "idx_b(b)"), res.Rows())
tk.MustExec("execute stmt6;")
tk.MustQuery("select @@last_plan_from_cache").Check(testkit.Rows("1"))
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")
tk.MustExec("execute stmt6;")
require.Equal(t, "t2:idx_c", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
tkProcess = tk.Session().ShowProcess()
ps = []*util.ProcessInfo{tkProcess}
tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
require.True(t, tk.MustUseIndex4ExplainFor(res, "idx_c(c)"), res.Rows())
// TestExplain
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.MustExec("prepare stmt1 from 'SELECT * from t1,t2 where t1.id = t2.id';")
tk.MustExec("execute stmt1;")
tkProcess = tk.Session().ShowProcess()
ps = []*util.ProcessInfo{tkProcess}
tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
require.True(t, tk.HasPlan4ExplainFor(res, "HashJoin"))
tk.MustExec("execute stmt1;")
tk.MustQuery("select @@last_plan_from_cache").Check(testkit.Rows("1"))
tk.MustExec("prepare stmt2 from 'SELECT /*+ TIDB_SMJ(t1, t2) */ * from t1,t2 where t1.id = t2.id';")
tk.MustExec("execute stmt2;")
tkProcess = tk.Session().ShowProcess()
ps = []*util.ProcessInfo{tkProcess}
tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
require.True(t, tk.HasPlan4ExplainFor(res, "MergeJoin"))
tk.MustExec("execute stmt2;")
tk.MustQuery("select @@last_plan_from_cache").Check(testkit.Rows("1"))
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")
tk.MustExec("execute stmt1;")
tkProcess = tk.Session().ShowProcess()
ps = []*util.ProcessInfo{tkProcess}
tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
require.True(t, tk.HasPlan4ExplainFor(res, "MergeJoin"))
tk.MustExec("drop global binding for SELECT * from t1,t2 where t1.id = t2.id")
tk.MustExec("create index index_id on t1(id)")
tk.MustExec("prepare stmt1 from 'SELECT * from t1 use index(index_id)';")
tk.MustExec("execute stmt1;")
tkProcess = tk.Session().ShowProcess()
ps = []*util.ProcessInfo{tkProcess}
tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
require.True(t, tk.HasPlan4ExplainFor(res, "IndexReader"))
tk.MustExec("execute stmt1;")
tk.MustQuery("select @@last_plan_from_cache").Check(testkit.Rows("1"))
tk.MustExec("create global binding for SELECT * from t1 using SELECT * from t1 ignore index(index_id)")
tk.MustExec("execute stmt1;")
tkProcess = tk.Session().ShowProcess()
ps = []*util.ProcessInfo{tkProcess}
tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
require.False(t, tk.HasPlan4ExplainFor(res, "IndexReader"))
tk.MustExec("execute stmt1;")
tk.MustQuery("select @@last_plan_from_cache").Check(testkit.Rows("1"))
// Add test for SetOprStmt
tk.MustExec("prepare stmt1 from 'SELECT * from t1 union SELECT * from t1';")
tk.MustExec("execute stmt1;")
tkProcess = tk.Session().ShowProcess()
ps = []*util.ProcessInfo{tkProcess}
tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
require.True(t, tk.HasPlan4ExplainFor(res, "IndexReader"))
tk.MustExec("execute stmt1;")
tk.MustQuery("select @@last_plan_from_cache").Check(testkit.Rows("1"))
tk.MustExec("prepare stmt2 from 'SELECT * from t1 use index(index_id) union SELECT * from t1';")
tk.MustExec("execute stmt2;")
tkProcess = tk.Session().ShowProcess()
ps = []*util.ProcessInfo{tkProcess}
tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
require.True(t, tk.HasPlan4ExplainFor(res, "IndexReader"))
tk.MustExec("execute stmt2;")
tk.MustQuery("select @@last_plan_from_cache").Check(testkit.Rows("1"))
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")
tk.MustExec("execute stmt1;")
tkProcess = tk.Session().ShowProcess()
ps = []*util.ProcessInfo{tkProcess}
tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
require.True(t, tk.HasPlan4ExplainFor(res, "IndexReader"))
tk.MustExec("drop global binding for SELECT * from t1 union SELECT * from t1")
// TestBindingSymbolList
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);")
tk.MustExec("prepare stmt1 from 'select a, b from t where a = 3 limit 1, 100';")
tk.MustExec("execute stmt1;")
require.Equal(t, "t:ia", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
tkProcess = tk.Session().ShowProcess()
ps = []*util.ProcessInfo{tkProcess}
tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
require.True(t, tk.MustUseIndex4ExplainFor(res, "ia(a)"), res.Rows())
tk.MustExec("execute stmt1;")
tk.MustQuery("select @@last_plan_from_cache").Check(testkit.Rows("1"))
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`)
// after binding
tk.MustExec("execute stmt1;")
require.Equal(t, "t:ib", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
tkProcess = tk.Session().ShowProcess()
ps = []*util.ProcessInfo{tkProcess}
tk.Session().SetSessionManager(&testkit.MockSessionManager{PS: ps})
res = tk.MustQuery("explain for connection " + strconv.FormatUint(tkProcess.ID, 10))
require.True(t, tk.MustUseIndex4ExplainFor(res, "ib(b)"), res.Rows())
}
func TestExplain(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 t1")
tk.MustExec("drop table if exists t2")
tk.MustExec("create table t1(id int)")
tk.MustExec("create table t2(id int)")
require.True(t, tk.HasPlan("SELECT * from t1,t2 where t1.id = t2.id", "HashJoin"))
require.True(t, tk.HasPlan("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")
require.True(t, tk.HasPlan("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")
// Add test for SetOprStmt
tk.MustExec("create index index_id on t1(id)")
require.True(t, tk.HasPlan("SELECT * from t1 union SELECT * from t1", "IndexReader"))
require.True(t, tk.HasPlan("SELECT * from t1 use index(index_id) union SELECT * from t1", "IndexReader"))
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")
require.True(t, tk.HasPlan("SELECT * from t1 union SELECT * from t1", "IndexReader"))
tk.MustExec("drop global binding for SELECT * from t1 union SELECT * from t1")
}
func TestBindSemiJoinRewrite(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)")
require.True(t, tk.HasKeywordInOperatorInfo("select * from t1 where exists(select 1 from t2 where t1.id=t2.id)", "semi join"))
require.True(t, tk.NotHasKeywordInOperatorInfo("select * from t1 where exists(select /*+ SEMI_JOIN_REWRITE() */ 1 from t2 where t1.id=t2.id)", "semi join"))
tk.MustExec(`
create global binding for
select * from t1 where exists(select 1 from t2 where t1.id=t2.id)
using
select * from t1 where exists(select /*+ SEMI_JOIN_REWRITE() */ 1 from t2 where t1.id=t2.id)
`)
require.True(t, tk.NotHasKeywordInOperatorInfo("select * from t1 where exists(select 1 from t2 where t1.id=t2.id)", "semi join"))
}
func TestBindCTEMerge(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("create table t1(id int)")
require.True(t, tk.HasPlan("with cte as (select * from t1) select * from cte a, cte b", "CTEFullScan"))
require.False(t, tk.HasPlan("with cte as (select /*+ MERGE() */ * from t1) select * from cte a, cte b", "CTEFullScan"))
tk.MustExec(`
create global binding for
with cte as (select * from t1) select * from cte
using
with cte as (select /*+ MERGE() */ * from t1) select * from cte
`)
require.False(t, tk.HasPlan("with cte as (select * from t1) select * from cte", "CTEFullScan"))
}
func TestBindNoDecorrelate(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(a int, b int)")
tk.MustExec("create table t2(a int, b int)")
require.False(t, tk.HasPlan("select exists (select t2.b from t2 where t2.a = t1.b limit 2) from t1", "Apply"))
require.True(t, tk.HasPlan("select exists (select /*+ no_decorrelate() */ t2.b from t2 where t2.a = t1.b limit 2) from t1", "Apply"))
tk.MustExec(`
create global binding for
select exists (select t2.b from t2 where t2.a = t1.b limit 2) from t1
using
select exists (select /*+ no_decorrelate() */ t2.b from t2 where t2.a = t1.b limit 2) from t1
`)
require.True(t, tk.HasPlan("select exists (select t2.b from t2 where t2.a = t1.b limit 2) from t1", "Apply"))
}
// TestBindingSymbolList tests sql with "?, ?, ?, ?", fixes #13871
func TestBindingSymbolList(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.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`)
// after binding
tk.MustQuery("select a, b from t where a = 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 a = 3 limit 1, 100", "ib(b)"))
// Normalize
sql, hash := parser.NormalizeDigest("select a, b from test . t where a = 1 limit 0, 1")
bindData := dom.BindHandle().GetBindRecord(hash.String(), sql, "test")
require.NotNil(t, bindData)
require.Equal(t, "select `a` , `b` from `test` . `t` where `a` = ? limit ...", bindData.OriginalSQL)
bind := bindData.Bindings[0]
require.Equal(t, "SELECT `a`,`b` FROM `test`.`t` USE INDEX (`ib`) WHERE `a` = 1 LIMIT 0,1", bind.BindSQL)
require.Equal(t, "test", bindData.Db)
require.Equal(t, bindinfo.Enabled, bind.Status)
require.NotNil(t, bind.Charset)
require.NotNil(t, bind.Collation)
require.NotNil(t, bind.CreateTime)
require.NotNil(t, bind.UpdateTime)
}
func TestDMLSQLBind(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
tk.MustExec("drop table if exists t1, t2")
tk.MustExec("create table t1(a int, b int, c int, key idx_b(b), key idx_c(c))")
tk.MustExec("create table t2(a int, b int, c int, key idx_b(b), key idx_c(c))")
tk.MustExec("delete from t1 where b = 1 and c > 1")
require.Equal(t, "t1:idx_b", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
require.True(t, tk.MustUseIndex("delete from t1 where b = 1 and c > 1", "idx_b(b)"))
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")
tk.MustExec("delete from t1 where b = 1 and c > 1")
require.Equal(t, "t1:idx_c", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
require.True(t, tk.MustUseIndex("delete from t1 where b = 1 and c > 1", "idx_c(c)"))
require.True(t, tk.HasPlan("delete t1, t2 from t1 inner join t2 on t1.b = t2.b", "HashJoin"))
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")
require.True(t, tk.HasPlan("delete t1, t2 from t1 inner join t2 on t1.b = t2.b", "IndexJoin"))
tk.MustExec("update t1 set a = 1 where b = 1 and c > 1")
require.Equal(t, "t1:idx_b", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
require.True(t, tk.MustUseIndex("update t1 set a = 1 where b = 1 and c > 1", "idx_b(b)"))
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")
tk.MustExec("delete from t1 where b = 1 and c > 1")
require.Equal(t, "t1:idx_c", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
require.True(t, tk.MustUseIndex("update t1 set a = 1 where b = 1 and c > 1", "idx_c(c)"))
require.True(t, tk.HasPlan("update t1, t2 set t1.a = 1 where t1.b = t2.b", "HashJoin"))
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")
require.True(t, tk.HasPlan("update t1, t2 set t1.a = 1 where t1.b = t2.b", "IndexJoin"))
tk.MustExec("insert into t1 select * from t2 where t2.b = 2 and t2.c > 2")
require.Equal(t, "t2:idx_b", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
require.True(t, tk.MustUseIndex("insert into t1 select * from t2 where t2.b = 2 and t2.c > 2", "idx_b(b)"))
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")
tk.MustExec("insert into t1 select * from t2 where t2.b = 2 and t2.c > 2")
require.Equal(t, "t2:idx_b", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
require.True(t, tk.MustUseIndex("insert into t1 select * from t2 where t2.b = 2 and t2.c > 2", "idx_b(b)"))
tk.MustExec("drop global binding for insert into t1 select * from t2 where t2.b = 1 and t2.c > 1")
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")
tk.MustExec("insert into t1 select * from t2 where t2.b = 2 and t2.c > 2")
require.Equal(t, "t2:idx_c", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
require.True(t, tk.MustUseIndex("insert into t1 select * from t2 where t2.b = 2 and t2.c > 2", "idx_c(c)"))
tk.MustExec("replace into t1 select * from t2 where t2.b = 2 and t2.c > 2")
require.Equal(t, "t2:idx_b", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
require.True(t, tk.MustUseIndex("replace into t1 select * from t2 where t2.b = 2 and t2.c > 2", "idx_b(b)"))
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")
tk.MustExec("replace into t1 select * from t2 where t2.b = 2 and t2.c > 2")
require.Equal(t, "t2:idx_c", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
require.True(t, tk.MustUseIndex("replace into t1 select * from t2 where t2.b = 2 and t2.c > 2", "idx_c(c)"))
}
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`)
sql, hash := utilNormalizeWithDefaultDB(t, "select a, b from t where a = 1 limit 0, 1", "test")
bindData := dom.BindHandle().GetBindRecord(hash, sql, "test")
require.NotNil(t, bindData)
require.Equal(t, "select `a` , `b` from `test` . `t` where `a` = ? limit ...", bindData.OriginalSQL)
bind := bindData.Bindings[0]
require.Equal(t, "SELECT /*+ use_index(@`sel_1` `test`.`t` `ia`)*/ `a`,`b` FROM `test`.`t` WHERE `a` = 1 LIMIT 0,1", bind.BindSQL)
require.Equal(t, "test", bindData.Db)
require.Equal(t, bindinfo.Enabled, bind.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 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)
sql, hash := parser.NormalizeDigest("select * from test . t where i > ?")
bindData := dom.BindHandle().GetBindRecord(hash.String(), sql, "test")
require.NotNil(t, bindData)
require.Equal(t, "select * from `test` . `t` where `i` > ?", bindData.OriginalSQL)
bind := bindData.Bindings[0]
require.Equal(t, "SELECT * FROM `test`.`t` USE INDEX (`index_t`) WHERE `i` > 100", bind.BindSQL)
require.Equal(t, "test", bindData.Db)
require.Equal(t, bindinfo.Enabled, bind.Status)
require.NotNil(t, bind.Charset)
require.NotNil(t, bind.Collation)
require.NotNil(t, bind.CreateTime)
require.NotNil(t, bind.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().DropInvalidBindRecord()
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 TestDMLEvolveBaselines(t *testing.T) {
originalVal := config.CheckTableBeforeDrop
config.CheckTableBeforeDrop = true
defer func() {
config.CheckTableBeforeDrop = originalVal
}()
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_b(b), index idx_c(c))")
tk.MustExec("insert into t values (1,1,1), (2,2,2), (3,3,3), (4,4,4), (5,5,5)")
tk.MustExec("analyze table t")
tk.MustExec("set @@tidb_evolve_plan_baselines=1")
tk.MustExec("create global binding for delete from t where b = 1 and c > 1 using delete /*+ use_index(t,idx_c) */ from t where b = 1 and c > 1")
rows := tk.MustQuery("show global bindings").Rows()
require.Len(t, rows, 1)
tk.MustExec("delete /*+ use_index(t,idx_b) */ from t where b = 2 and c > 1")
require.Equal(t, "t:idx_c", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
tk.MustExec("admin flush bindings")
rows = tk.MustQuery("show global bindings").Rows()
require.Len(t, rows, 1)
tk.MustExec("admin evolve bindings")
rows = tk.MustQuery("show global bindings").Rows()
require.Len(t, rows, 1)
tk.MustExec("create global binding for update t set a = 1 where b = 1 and c > 1 using update /*+ use_index(t,idx_c) */ t set a = 1 where b = 1 and c > 1")
rows = tk.MustQuery("show global bindings").Rows()
require.Len(t, rows, 2)
tk.MustExec("update /*+ use_index(t,idx_b) */ t set a = 2 where b = 2 and c > 1")
require.Equal(t, "t:idx_c", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
tk.MustExec("admin flush bindings")
rows = tk.MustQuery("show global bindings").Rows()
require.Len(t, rows, 2)
tk.MustExec("admin evolve bindings")
rows = tk.MustQuery("show global bindings").Rows()
require.Len(t, rows, 2)
tk.MustExec("create table t1 like t")
tk.MustExec("create global binding for insert into t1 select * from t where t.b = 1 and t.c > 1 using insert into t1 select /*+ use_index(t,idx_c) */ * from t where t.b = 1 and t.c > 1")
rows = tk.MustQuery("show global bindings").Rows()
require.Len(t, rows, 3)
tk.MustExec("insert into t1 select /*+ use_index(t,idx_b) */ * from t where t.b = 2 and t.c > 2")
require.Equal(t, "t:idx_c", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
tk.MustExec("admin flush bindings")
rows = tk.MustQuery("show global bindings").Rows()
require.Len(t, rows, 3)
tk.MustExec("admin evolve bindings")
rows = tk.MustQuery("show global bindings").Rows()
require.Len(t, rows, 3)
tk.MustExec("create global binding for replace into t1 select * from t where t.b = 1 and t.c > 1 using replace into t1 select /*+ use_index(t,idx_c) */ * from t where t.b = 1 and t.c > 1")
rows = tk.MustQuery("show global bindings").Rows()
require.Len(t, rows, 4)
tk.MustExec("replace into t1 select /*+ use_index(t,idx_b) */ * from t where t.b = 2 and t.c > 2")
require.Equal(t, "t:idx_c", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
tk.MustExec("admin flush bindings")
rows = tk.MustQuery("show global bindings").Rows()
require.Len(t, rows, 4)
tk.MustExec("admin evolve bindings")
rows = tk.MustQuery("show global bindings").Rows()
require.Len(t, rows, 4)
}
func TestAddEvolveTasks(t *testing.T) {
originalVal := config.CheckTableBeforeDrop
config.CheckTableBeforeDrop = true
defer func() {
config.CheckTableBeforeDrop = originalVal
}()
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), index idx_c(c))")
tk.MustExec("insert into t values (1,1,1), (2,2,2), (3,3,3), (4,4,4), (5,5,5)")
tk.MustExec("analyze table t")
tk.MustExec("create global binding for select * from t where a >= 1 and b >= 1 and c = 0 using select * from t use index(idx_a) where a >= 1 and b >= 1 and c = 0")
tk.MustExec("set @@tidb_evolve_plan_baselines=1")
// It cannot choose table path although it has lowest cost.
tk.MustQuery("select * from t where a >= 4 and b >= 1 and c = 0")
require.Equal(t, "t:idx_a", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
tk.MustExec("admin flush bindings")
rows := tk.MustQuery("show global bindings").Rows()
require.Len(t, rows, 2)
require.Equal(t, "SELECT /*+ use_index(@`sel_1` `test`.`t` )*/ * FROM `test`.`t` WHERE `a` >= 4 AND `b` >= 1 AND `c` = 0", rows[0][1])
require.Equal(t, "pending verify", rows[0][3])
tk.MustExec("admin evolve bindings")
rows = tk.MustQuery("show global bindings").Rows()
require.Len(t, rows, 2)
require.Equal(t, "SELECT /*+ use_index(@`sel_1` `test`.`t` )*/ * FROM `test`.`t` WHERE `a` >= 4 AND `b` >= 1 AND `c` = 0", rows[0][1])
status := rows[0][3].(string)
require.True(t, status == bindinfo.Enabled || status == bindinfo.Rejected)
}
func TestRuntimeHintsInEvolveTasks(t *testing.T) {
originalVal := config.CheckTableBeforeDrop
config.CheckTableBeforeDrop = true
defer func() {
config.CheckTableBeforeDrop = originalVal
}()
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
tk.MustExec("drop table if exists t")
tk.MustExec("set @@tidb_evolve_plan_baselines=1")
tk.MustExec("create table t(a int, b int, c int, index idx_a(a), index idx_b(b), index idx_c(c))")
tk.MustExec("create global binding for select * from t where a >= 1 and b >= 1 and c = 0 using select * from t use index(idx_a) where a >= 1 and b >= 1 and c = 0")
tk.MustQuery("select /*+ MAX_EXECUTION_TIME(5000) */ * from t where a >= 4 and b >= 1 and c = 0")
tk.MustExec("admin flush bindings")
rows := tk.MustQuery("show global bindings").Rows()
require.Len(t, rows, 2)
require.Equal(t, "SELECT /*+ use_index(@`sel_1` `test`.`t` `idx_c`), no_order_index(@`sel_1` `test`.`t` `idx_c`), max_execution_time(5000)*/ * FROM `test`.`t` WHERE `a` >= 4 AND `b` >= 1 AND `c` = 0", rows[0][1])
}
func TestDefaultSessionVars(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustQuery(`show variables like "%baselines%"`).Sort().Check(testkit.Rows(
"tidb_capture_plan_baselines OFF",
"tidb_evolve_plan_baselines OFF",
"tidb_use_plan_baselines ON"))
tk.MustQuery(`show global variables like "%baselines%"`).Sort().Check(testkit.Rows(
"tidb_capture_plan_baselines OFF",
"tidb_evolve_plan_baselines OFF",
"tidb_use_plan_baselines ON"))
}
func TestCaptureBaselinesScope(t *testing.T) {
store, dom := testkit.CreateMockStoreAndDomain(t)
tk1 := testkit.NewTestKit(t, store)
tk2 := testkit.NewTestKit(t, store)
utilCleanBindingEnv(tk1, dom)
tk1.MustQuery(`show session variables like "tidb_capture_plan_baselines"`).Check(testkit.Rows(
"tidb_capture_plan_baselines OFF",
))
tk1.MustQuery(`show global variables like "tidb_capture_plan_baselines"`).Check(testkit.Rows(
"tidb_capture_plan_baselines OFF",
))
tk1.MustQuery(`select @@global.tidb_capture_plan_baselines`).Check(testkit.Rows(
"0",
))
tk1.MustExec("SET GLOBAL tidb_capture_plan_baselines = on")
defer func() {
tk1.MustExec(" set GLOBAL tidb_capture_plan_baselines = off")
}()
tk1.MustQuery(`show variables like "tidb_capture_plan_baselines"`).Check(testkit.Rows(
"tidb_capture_plan_baselines ON",
))
tk1.MustQuery(`show global variables like "tidb_capture_plan_baselines"`).Check(testkit.Rows(
"tidb_capture_plan_baselines ON",
))
tk2.MustQuery(`show global variables like "tidb_capture_plan_baselines"`).Check(testkit.Rows(
"tidb_capture_plan_baselines ON",
))
tk2.MustQuery(`select @@global.tidb_capture_plan_baselines`).Check(testkit.Rows(
"1",
))
}
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), 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)
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)
}
func TestPrivileges(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)")
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, 1)
tk.MustExec("create user test@'%'")
require.NoError(t, tk.Session().Auth(&auth.UserIdentity{Username: "test", Hostname: "%"}, nil, nil, nil))
rows = tk.MustQuery("show global bindings").Rows()
require.Len(t, rows, 0)
}
func TestHintsSetEvolveTask(t *testing.T) {
originalVal := config.CheckTableBeforeDrop
config.CheckTableBeforeDrop = true
defer func() {
config.CheckTableBeforeDrop = originalVal
}()
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 * from t ignore index(idx_a) where a > 10")
tk.MustExec("set @@tidb_evolve_plan_baselines=1")
tk.MustQuery("select * from t use index(idx_a) where a > 0")
bindHandle := dom.BindHandle()
bindHandle.SaveEvolveTasksToStore()
// Verify the added Binding for evolution contains valid ID and Hint, otherwise, panic may happen.
sql, hash := utilNormalizeWithDefaultDB(t, "select * from t where a > ?", "test")
bindData := bindHandle.GetBindRecord(hash, sql, "test")
require.NotNil(t, bindData)
require.Equal(t, "select * from `test` . `t` where `a` > ?", bindData.OriginalSQL)
require.Len(t, bindData.Bindings, 2)
bind := bindData.Bindings[1]
require.Equal(t, bindinfo.PendingVerify, bind.Status)
require.NotEqual(t, "", bind.ID)
require.NotNil(t, bind.Hint)
}
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")
bindHandle := dom.BindHandle()
// Verify the added Binding contains ID with restored query block.
sql, hash := utilNormalizeWithDefaultDB(t, "select * from t where a > ?", "test")
bindData := bindHandle.GetBindRecord(hash, sql, "test")
require.NotNil(t, bindData)
require.Equal(t, "select * from `test` . `t` where `a` > ?", bindData.OriginalSQL)
require.Len(t, bindData.Bindings, 1)
bind := bindData.Bindings[0]
require.Equal(t, "use_index(@`sel_1` `test`.`t` `idx_a`)", bind.ID)
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")
bindData = bindHandle.GetBindRecord(hash, sql, "test")
require.NotNil(t, bindData)
require.Equal(t, "select * from `test` . `t` where `a` > ?", bindData.OriginalSQL)
require.Len(t, bindData.Bindings, 1)
bind = bindData.Bindings[0]
require.Equal(t, "use_index(@`sel_1` `test`.`t` `idx_a`)", bind.ID)
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")
bindData = bindHandle.GetBindRecord(hash, sql, "test")
require.NotNil(t, bindData)
require.Equal(t, "select * from `test` . `t` where `a` > ?", bindData.OriginalSQL)
require.Len(t, bindData.Bindings, 1)
bind = bindData.Bindings[0]
require.Equal(t, "use_index(@`sel_1` `test`.`t` `idx_a`)", bind.ID)
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")
bindData = bindHandle.GetBindRecord(hash, sql, "test")
require.NotNil(t, bindData)
require.Equal(t, "select * from `test` . `t` where `a` > ?", bindData.OriginalSQL)
require.Len(t, bindData.Bindings, 1)
bind = bindData.Bindings[0]
require.Equal(t, "use_index(@`sel_1` `test`.`t` `idx_a`)", bind.ID)
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")
bindData = bindHandle.GetBindRecord(hash, sql, "test")
require.NotNil(t, bindData)
require.Equal(t, "select * from `test` . `t` where `a` > ?", bindData.OriginalSQL)
require.Len(t, bindData.Bindings, 1)
bind = bindData.Bindings[0]
require.Equal(t, "use_index(@`sel_1` `test`.`t` `idx_a`)", bind.ID)
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")
bindData = bindHandle.GetBindRecord(hash, sql, "test")
require.NotNil(t, bindData)
require.Equal(t, "select * from `test` . `t` where `a` > ?", bindData.OriginalSQL)
require.Len(t, bindData.Bindings, 1)
bind = bindData.Bindings[0]
require.Equal(t, "", bind.ID)
}
func TestNotEvolvePlanForReadStorageHint(t *testing.T) {
originalVal := config.CheckTableBeforeDrop
config.CheckTableBeforeDrop = true
defer func() {
config.CheckTableBeforeDrop = originalVal
}()
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 _, tblInfo := range db.Tables {
if tblInfo.Name.L == "t" {
tblInfo.TiFlashReplica = &model.TiFlashReplicaInfo{
Count: 1,
Available: true,
}
}
}
// Make sure the best plan of the SQL is use TiKV index.
tk.MustExec("set @@session.tidb_executor_concurrency = 4; set @@tidb_allow_mpp=0;")
rows := tk.MustQuery("explain select * from t where a >= 11 and b >= 11").Rows()
require.Equal(t, "cop[tikv]", fmt.Sprintf("%v", rows[len(rows)-1][2]))
tk.MustExec("set @@tidb_allow_mpp=1")
tk.MustExec("create global binding for select * from t where a >= 1 and b >= 1 using select /*+ read_from_storage(tiflash[t]) */ * from t where a >= 1 and b >= 1")
tk.MustExec("set @@tidb_evolve_plan_baselines=1")
// Even if index of TiKV has lower cost, it chooses TiFlash.
rows = tk.MustQuery("explain select * from t where a >= 11 and b >= 11").Rows()
require.Equal(t, "mpp[tiflash]", fmt.Sprintf("%v", rows[len(rows)-1][2]))
tk.MustExec("admin flush bindings")
rows = tk.MustQuery("show global bindings").Rows()
// None evolve task, because of the origin binding is a read_from_storage binding.
require.Len(t, rows, 1)
require.Equal(t, "SELECT /*+ read_from_storage(tiflash[`t`])*/ * FROM `test`.`t` WHERE `a` >= 1 AND `b` >= 1", rows[0][1])
require.Equal(t, bindinfo.Enabled, rows[0][3])
}
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 _, tblInfo := range db.Tables {
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 TestReCreateBindAfterEvolvePlan(t *testing.T) {
originalVal := config.CheckTableBeforeDrop
config.CheckTableBeforeDrop = true
defer func() {
config.CheckTableBeforeDrop = originalVal
}()
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), index idx_c(c))")
tk.MustExec("insert into t values (1,1,1), (2,2,2), (3,3,3), (4,4,4), (5,5,5)")
tk.MustExec("analyze table t")
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_evolve_plan_baselines=1")
// It cannot choose table path although it has lowest cost.
tk.MustQuery("select * from t where a >= 0 and b >= 0")
require.Equal(t, "t:idx_a", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
tk.MustExec("admin flush bindings")
rows := tk.MustQuery("show global bindings").Rows()
require.Len(t, rows, 2)
require.Equal(t, "SELECT /*+ use_index(@`sel_1` `test`.`t` )*/ * FROM `test`.`t` WHERE `a` >= 0 AND `b` >= 0", rows[0][1])
require.Equal(t, "pending verify", rows[0][3])
tk.MustExec("create global binding for select * from t where a >= 1 and b >= 1 using select * from t use index(idx_b) where a >= 1 and b >= 1")
rows = tk.MustQuery("show global bindings").Rows()
require.Len(t, rows, 1)
tk.MustQuery("select * from t where a >= 4 and b >= 1")
require.Equal(t, "t:idx_b", tk.Session().GetSessionVars().StmtCtx.IndexNames[0])
}
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