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executor: reset groupChecker for StreamAggExec when Close (#10615) #10670

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merged 2 commits into from
May 31, 2019
Merged

executor: reset groupChecker for StreamAggExec when Close (#10615) #10670

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788754a
executor: reset groupChecker for StreamAggExec when Close (#10615)
XuHuaiyu May 31, 2019
bade3cc
Merge branch 'release-2.1' into release-2.1
zz-jason May 31, 2019
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6 changes: 6 additions & 0 deletions executor/aggregate.go
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Original file line number Diff line number Diff line change
Expand Up @@ -774,6 +774,12 @@ func (e *StreamAggExec) Open(ctx context.Context) error {
// Close implements the Executor Close interface.
func (e *StreamAggExec) Close() error {
e.childResult = nil
if e.curGroupKey != nil {
e.curGroupKey = e.curGroupKey[:0]
}
if e.tmpGroupKey != nil {
e.tmpGroupKey = e.tmpGroupKey[:0]
}
return errors.Trace(e.baseExecutor.Close())
}

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10 changes: 10 additions & 0 deletions executor/aggregate_test.go
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Expand Up @@ -708,3 +708,13 @@ func (s *testSuite) TestIssue10098(c *C) {
tk.MustExec("insert into t values('1', '222'), ('12', '22')")
tk.MustQuery("select group_concat(distinct a, b) from t").Check(testkit.Rows("1222,1222"))
}

func (s *testSuite) TestIssue10608(c *C) {
tk := testkit.NewTestKitWithInit(c, s.store)
tk.MustExec(`drop table if exists t, s;`)
tk.MustExec("CREATE TABLE t (id int(11) NOT NULL,PRIMARY KEY (id)) ;")
tk.MustExec("CREATE TABLE s (id int(11) NOT NULL,b int(11) NOT NULL,PRIMARY KEY (id)) ")
tk.MustExec("INSERT INTO t VALUES (508931),(508932); ")
tk.MustExec("INSERT INTO s VALUES (100292, 508931),(120002, 508932);")
tk.MustQuery("select (select group_concat(concat(123,'-')) from t where t.id = b group by t.id) from s;").Check(testkit.Rows("123-", "123-"))
}