950583eaf8
* plan, tidb-server: add a flag to control statistic info reading. * pass test. * address comment
46 lines
1.5 KiB
Go
46 lines
1.5 KiB
Go
// Copyright 2017 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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"strings"
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. "github.com/pingcap/check"
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"github.com/pingcap/tidb/plan"
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"github.com/pingcap/tidb/util/testkit"
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"github.com/pingcap/tidb/util/testleak"
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)
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func (s *testSuite) TestAnalyzeTable(c *C) {
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plan.EnableStatistic = true
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defer func() {
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testleak.AfterTest(c)()
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plan.EnableStatistic = false
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}()
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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 t1")
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tk.MustExec("create table t1 (a int)")
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tk.MustExec("create index ind_a on t1 (a)")
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tk.MustExec("insert into t1 (a) values (1)")
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result := tk.MustQuery("explain select * from t1 where t1.a = 1")
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rowStr := fmt.Sprintf("%s", result.Rows())
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c.Check(strings.Split(rowStr, "{")[0], Equals, "[[IndexScan_5 ")
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tk.MustExec("analyze table t1")
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result = tk.MustQuery("explain select * from t1 where t1.a = 1")
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rowStr = fmt.Sprintf("%s", result.Rows())
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c.Check(strings.Split(rowStr, "{")[0], Equals, "[[TableScan_4 ")
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}
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