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| @@ -0,0 +1,119 @@ | ||
| // 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, | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package plan_test | ||
|
|
||
| import ( | ||
| . "github.com/pingcap/check" | ||
| "github.com/pingcap/tidb/util/testkit" | ||
| "github.com/pingcap/tidb/util/testleak" | ||
| ) | ||
|
|
||
| var _ = Suite(&testExpressionRewriterSuite{}) | ||
|
|
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| type testExpressionRewriterSuite struct { | ||
| } | ||
|
|
||
| func (s *testExpressionRewriterSuite) TestCompareSubquery(c *C) { | ||
| defer testleak.AfterTest(c)() | ||
| store, dom, err := newStoreWithBootstrap() | ||
| c.Assert(err, IsNil) | ||
| tk := testkit.NewTestKit(c, store) | ||
| defer func() { | ||
| dom.Close() | ||
| store.Close() | ||
| }() | ||
| tk.MustExec("use test") | ||
| tk.MustExec("drop table if exists t") | ||
| tk.MustExec("drop table if exists s") | ||
| tk.MustExec("create table t(a int, b int)") | ||
| tk.MustExec("create table s(a int, b int)") | ||
| tk.MustExec("insert into t values(1, null), (2, null)") | ||
|
|
||
| // Test empty checker. | ||
| tk.MustQuery("select a != any (select a from s) from t").Check(testkit.Rows( | ||
| "0", | ||
| "0", | ||
| )) | ||
| tk.MustQuery("select b != any (select a from s) from t").Check(testkit.Rows( | ||
| "0", | ||
| "0", | ||
| )) | ||
| tk.MustQuery("select a = all (select a from s) from t").Check(testkit.Rows( | ||
| "1", | ||
| "1", | ||
| )) | ||
| tk.MustQuery("select b = all (select a from s) from t").Check(testkit.Rows( | ||
| "1", | ||
| "1", | ||
| )) | ||
| tk.MustQuery("select * from t where a != any (select a from s)").Check(testkit.Rows()) | ||
| tk.MustQuery("select * from t where b != any (select a from s)").Check(testkit.Rows()) | ||
| tk.MustQuery("select * from t where a = all (select a from s)").Check(testkit.Rows( | ||
| "1 <nil>", | ||
| "2 <nil>", | ||
| )) | ||
| tk.MustQuery("select * from t where b = all (select a from s)").Check(testkit.Rows( | ||
| "1 <nil>", | ||
| "2 <nil>", | ||
| )) | ||
| // Test outer null checker. | ||
| tk.MustQuery("select b != any (select a from t t2) from t t1").Check(testkit.Rows( | ||
| "<nil>", | ||
| "<nil>", | ||
| )) | ||
| tk.MustQuery("select b = all (select a from t t2) from t t1").Check(testkit.Rows( | ||
| "<nil>", | ||
| "<nil>", | ||
| )) | ||
| tk.MustQuery("select * from t t1 where b != any (select a from t t2)").Check(testkit.Rows()) | ||
| tk.MustQuery("select * from t t1 where b = all (select a from t t2)").Check(testkit.Rows()) | ||
|
|
||
| tk.MustExec("delete from t where a = 2") | ||
| tk.MustQuery("select b != any (select a from t t2) from t t1").Check(testkit.Rows( | ||
| "<nil>", | ||
| )) | ||
| tk.MustQuery("select b = all (select a from t t2) from t t1").Check(testkit.Rows( | ||
| "<nil>", | ||
| )) | ||
| tk.MustQuery("select * from t t1 where b != any (select a from t t2)").Check(testkit.Rows()) | ||
| tk.MustQuery("select * from t t1 where b = all (select a from t t2)").Check(testkit.Rows()) | ||
|
|
||
| // Test inner null checker. | ||
| tk.MustExec("insert into t values(null, 1)") | ||
| tk.MustQuery("select b != any (select a from t t2) from t t1").Check(testkit.Rows( | ||
| "<nil>", | ||
| "<nil>", | ||
| )) | ||
| tk.MustQuery("select b = all (select a from t t2) from t t1").Check(testkit.Rows( | ||
| "<nil>", | ||
| "<nil>", | ||
| )) | ||
| tk.MustQuery("select * from t t1 where b != any (select a from t t2)").Check(testkit.Rows()) | ||
| tk.MustQuery("select * from t t1 where b = all (select a from t t2)").Check(testkit.Rows()) | ||
|
|
||
| tk.MustExec("delete from t where b = 1") | ||
| tk.MustExec("insert into t values(null, 2)") | ||
| tk.MustQuery("select b != any (select a from t t2) from t t1").Check(testkit.Rows( | ||
| "<nil>", | ||
| "1", | ||
| )) | ||
| tk.MustQuery("select b = all (select a from t t2) from t t1").Check(testkit.Rows( | ||
| "<nil>", | ||
| "0", | ||
| )) | ||
| tk.MustQuery("select * from t t1 where b != any (select a from t t2)").Check(testkit.Rows( | ||
| "<nil> 2", | ||
| )) | ||
| tk.MustQuery("select * from t t1 where b = all (select a from t t2)").Check(testkit.Rows()) | ||
| } |