91 lines
3.4 KiB
Go
91 lines
3.4 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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. "github.com/pingcap/check"
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"github.com/pingcap/tidb/session"
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"github.com/pingcap/tidb/util/testkit"
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)
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func (s *testSuite) TestShowStatsMeta(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, t1")
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tk.MustExec("create table t (a int, b int)")
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tk.MustExec("create table t1 (a int, b int)")
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tk.MustExec("analyze table t, t1")
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result := tk.MustQuery("show stats_meta")
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c.Assert(len(result.Rows()), Equals, 2)
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c.Assert(result.Rows()[0][1], Equals, "t")
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c.Assert(result.Rows()[1][1], Equals, "t1")
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result = tk.MustQuery("show stats_meta where table_name = 't'")
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c.Assert(len(result.Rows()), Equals, 1)
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c.Assert(result.Rows()[0][1], Equals, "t")
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}
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func (s *testSuite) TestShowStatsHistograms(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 (a int, b int)")
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tk.MustExec("analyze table t")
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result := tk.MustQuery("show stats_histograms").Sort()
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c.Assert(len(result.Rows()), Equals, 2)
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c.Assert(result.Rows()[0][2], Equals, "a")
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c.Assert(result.Rows()[1][2], Equals, "b")
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result = tk.MustQuery("show stats_histograms where column_name = 'a'")
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c.Assert(len(result.Rows()), Equals, 1)
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c.Assert(result.Rows()[0][2], Equals, "a")
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}
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func (s *testSuite) TestShowStatsBuckets(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 (a int, b int)")
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tk.MustExec("create index idx on t(a,b)")
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tk.MustExec("insert into t values (1,1)")
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tk.MustExec("analyze table t")
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result := tk.MustQuery("show stats_buckets").Sort()
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result.Sort().Check(testkit.Rows("test t a 0 0 1 1 1 1", "test t b 0 0 1 1 1 1", "test t idx 1 0 1 1 (1, 1) (1, 1)"))
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result = tk.MustQuery("show stats_buckets where column_name = 'idx'")
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result.Check(testkit.Rows("test t idx 1 0 1 1 (1, 1) (1, 1)"))
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}
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func (s *testSuite) TestShowStatsHealthy(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 (a int)")
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tk.MustExec("create index idx on t(a)")
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tk.MustExec("analyze table t")
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tk.MustQuery("show stats_healthy").Check(testkit.Rows("test t 100"))
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tk.MustExec("insert into t values (1), (2)")
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do, _ := session.GetDomain(s.store)
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do.StatsHandle().DumpStatsDeltaToKV()
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tk.MustExec("analyze table t")
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tk.MustQuery("show stats_healthy").Check(testkit.Rows("test t 100"))
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tk.MustExec("insert into t values (3), (4), (5), (6), (7), (8), (9), (10)")
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do.StatsHandle().DumpStatsDeltaToKV()
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do.StatsHandle().Update(do.InfoSchema())
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tk.MustQuery("show stats_healthy").Check(testkit.Rows("test t 19"))
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tk.MustExec("analyze table t")
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tk.MustQuery("show stats_healthy").Check(testkit.Rows("test t 100"))
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tk.MustExec("delete from t")
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do.StatsHandle().DumpStatsDeltaToKV()
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do.StatsHandle().Update(do.InfoSchema())
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tk.MustQuery("show stats_healthy").Check(testkit.Rows("test t 0"))
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}
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