105 lines
4.0 KiB
Go
105 lines
4.0 KiB
Go
// Copyright 2016 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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// See the License for the specific language governing permissions and
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// limitations under the License.
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package executor_test
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import (
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"fmt"
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. "github.com/pingcap/check"
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"github.com/pingcap/parser/auth"
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"github.com/pingcap/parser/model"
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"github.com/pingcap/tidb/domain"
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plannercore "github.com/pingcap/tidb/planner/core"
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"github.com/pingcap/tidb/util"
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"github.com/pingcap/tidb/util/testkit"
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)
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func (s *testSuite1) TestPreparedNameResolver(c *C) {
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tk := testkit.NewTestKit(c, s.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 (id int, KEY id (id))")
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tk.MustExec("prepare stmt from 'select * from t limit ? offset ?'")
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_, err := tk.Exec("prepare stmt from 'select b from t'")
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c.Assert(err.Error(), Equals, "[planner:1054]Unknown column 'b' in 'field list'")
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_, err = tk.Exec("prepare stmt from '(select * FROM t) union all (select * FROM t) order by a limit ?'")
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c.Assert(err.Error(), Equals, "[planner:1054]Unknown column 'a' in 'order clause'")
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}
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// a 'create table' DDL statement should be accepted if it has no parameters.
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func (s *testSuite1) TestPreparedDDL(c *C) {
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tk := testkit.NewTestKit(c, s.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("prepare stmt from 'create table t (id int, KEY id (id))'")
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}
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func (s *testSuite1) TestIgnorePlanCache(c *C) {
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tk := testkit.NewTestKit(c, s.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 (id int primary key, num int)")
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tk.MustExec("insert into t values (1, 1)")
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tk.MustExec("insert into t values (2, 2)")
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tk.MustExec("insert into t values (3, 3)")
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tk.MustExec("prepare stmt from 'select /*+ IGNORE_PLAN_CACHE() */ * from t where id=?'")
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tk.MustExec("set @ignore_plan_doma = 1")
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tk.MustExec("execute stmt using @ignore_plan_doma")
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c.Assert(tk.Se.GetSessionVars().StmtCtx.UseCache, IsFalse)
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}
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func (s *testSuite1) TestPrepareStmtAfterIsolationReadChange(c *C) {
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tk := testkit.NewTestKitWithInit(c, s.store)
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tk.Se.Auth(&auth.UserIdentity{Username: "root", Hostname: "localhost", CurrentUser: true, AuthUsername: "root", AuthHostname: "%"}, nil, []byte("012345678901234567890"))
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tk.MustExec("drop table if exists t")
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tk.MustExec("create table t(a int)")
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// create virtual tiflash replica.
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dom := domain.GetDomain(tk.Se)
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is := dom.InfoSchema()
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db, exists := is.SchemaByName(model.NewCIStr("test"))
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c.Assert(exists, IsTrue)
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for _, tblInfo := range db.Tables {
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if tblInfo.Name.L == "t" {
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tblInfo.TiFlashReplica = &model.TiFlashReplicaInfo{
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Count: 1,
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Available: true,
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}
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}
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}
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tk.MustExec("set @@session.tidb_isolation_read_engines='tikv'")
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tk.MustExec("prepare stmt from \"select * from t\"")
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tk.MustQuery("execute stmt")
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tkProcess := tk.Se.ShowProcess()
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ps := []*util.ProcessInfo{tkProcess}
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tk.Se.SetSessionManager(&mockSessionManager1{PS: ps})
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rows := tk.MustQuery(fmt.Sprintf("explain for connection %d", tkProcess.ID)).Rows()
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c.Assert(rows[len(rows)-1][2], Equals, "cop[tikv]")
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tk.MustExec("set @@session.tidb_isolation_read_engines='tiflash'")
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tk.MustExec("execute stmt")
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tkProcess = tk.Se.ShowProcess()
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ps = []*util.ProcessInfo{tkProcess}
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tk.Se.SetSessionManager(&mockSessionManager1{PS: ps})
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rows = tk.MustQuery(fmt.Sprintf("explain for connection %d", tkProcess.ID)).Rows()
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c.Assert(rows[len(rows)-1][2], Equals, "cop[tiflash]")
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c.Assert(len(tk.Se.GetSessionVars().PreparedStmts), Equals, 1)
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c.Assert(tk.Se.GetSessionVars().PreparedStmts[1].(*plannercore.CachedPrepareStmt).NormalizedSQL, Equals, "select * from t")
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c.Assert(tk.Se.GetSessionVars().PreparedStmts[1].(*plannercore.CachedPrepareStmt).NormalizedPlan, Equals, "")
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}
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