add test

pingcap · Nov 4, 2021 · 3d3e899 · 3d3e899
1 parent 1bb9b89
commit 3d3e899
Showing 1 changed file with 13 additions and 0 deletions.
diff --git a/expression/integration_test.go b/expression/integration_test.go
@@ -9937,6 +9937,19 @@ func (s *testIntegrationSuite) TestControlFunctionWithEnumOrSet(c *C) {
 	tk.MustExec("insert into t values(1,1,1),(2,1,1),(1,1,1),(2,1,1);")
 	tk.MustQuery("select if(A, null,b)=1 from t;").Check(testkit.Rows("<nil>", "<nil>", "<nil>", "<nil>"))
 	tk.MustQuery("select if(A, null,b)='a' from t;").Check(testkit.Rows("<nil>", "<nil>", "<nil>", "<nil>"))
+
+	// issue 29357
+	tk.MustExec("drop table if exists t;")
+	tk.MustExec("create table t(`a` enum('y','b','Abc','null','1','2','0')) CHARSET=binary;")
+	tk.MustExec("insert into t values(\"1\");")
+	tk.MustQuery("SELECT count(*) from t where (null like 'a') = (case when cast('2015' as real) <=> round(\"1200\",\"1\") then a end);\n").Check(testkit.Rows("0"))
+	tk.MustQuery("SELECT (null like 'a') = (case when cast('2015' as real) <=> round(\"1200\",\"1\") then a end) from t;\n").Check(testkit.Rows("<nil>"))
+	tk.MustQuery("SELECT 5 = (case when 0 <=> 0 then a end) from t;").Check(testkit.Rows("1"))
+	tk.MustQuery("SELECT '1' = (case when 0 <=> 0 then a end) from t;").Check(testkit.Rows("1"))
+	tk.MustQuery("SELECT 5 = (case when 0 <=> 1 then a end) from t;").Check(testkit.Rows("<nil>"))
+	tk.MustQuery("SELECT '1' = (case when 0 <=> 1 then a end) from t;").Check(testkit.Rows("<nil>"))
+	tk.MustQuery("SELECT 5 = (case when 0 <=> 1 then a else a end) from t;").Check(testkit.Rows("1"))
+	tk.MustQuery("SELECT '1' = (case when 0 <=> 1 then a else a end) from t;").Check(testkit.Rows("1"))
 }
 
 func (s *testIntegrationSuite) TestComplexShowVariables(c *C) {