Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

expression: Fix unexpected panic when using IF function. (#21132) #21711

Merged
merged 6 commits into from
Jan 27, 2021
+19 −4
Merged

expression: Fix unexpected panic when using IF function. (#21132) #21711

Show file tree
Hide file tree
Changes from 4 commits
Commits
Show all changes
6 commits
Select commit Hold shift + click to select a range
d1ecc6a
cherry pick #21132 to release-4.0
wshwsh12 Dec 14, 2020
7ce9589
resolve conflict
wshwsh12 Dec 15, 2020
9f12731
Merge remote-tracking branch 'upstream/release-4.0' into release-4.0-…
wshwsh12 Jan 26, 2021
be9e251
Merge remote-tracking branch 'upstream/release-4.0' into release-4.0-…
wshwsh12 Jan 26, 2021
2c13904
Merge branch 'release-4.0' into release-4.0-3eaa63d679cd
ti-srebot Jan 27, 2021
3fa9fd1
Merge branch 'release-4.0' into release-4.0-3eaa63d679cd
ti-srebot Jan 27, 2021
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
9 changes: 9 additions & 0 deletions expression/integration_test.go
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -7412,6 +7412,15 @@ func (s *testIntegrationSerialSuite) TestJsonObjectCompare(c *C) {
tk.MustQuery("select json_object('k', a) = json_object('k', b) from tx").Check(testkit.Rows("1"))
}

func (s *testIntegrationSuite2) TestIssue15847(c *C) {
tk := testkit.NewTestKit(c, s.store)
tk.MustExec("use test")
tk.MustExec("drop view if exists t15847")
tk.MustExec("CREATE VIEW t15847(c0) AS SELECT NULL;")
tk.MustQuery("SELECT * FROM t15847 WHERE (NOT (IF(t15847.c0, NULL, NULL)));").Check(testkit.Rows())
tk.MustExec("drop view if exists t15847")
}

func (s *testIntegrationSerialSuite) TestIssue21290(c *C) {
tk := testkit.NewTestKit(c, s.store)
tk.MustExec("use test")
Expand Down
8 changes: 7 additions & 1 deletion expression/scalar_function.go
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -203,7 +203,13 @@ func newFunctionImpl(ctx sessionctx.Context, fold int, funcName string, retType
}
funcArgs := make([]Expression, len(args))
copy(funcArgs, args)
typeInferForNull(funcArgs)
switch funcName {
case ast.If, ast.Ifnull, ast.Nullif:
// Do nothing. Because it will call InferType4ControlFuncs.
default:
typeInferForNull(funcArgs)
}

f, err := fc.getFunction(ctx, funcArgs)
if err != nil {
return nil, err
Expand Down
6 changes: 3 additions & 3 deletions expression/typeinfer_test.go
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1015,9 +1015,9 @@ func (s *testInferTypeSuite) createTestCase4CompareFuncs() []typeInferTestCase {
{"nullif(c_float_d , 123)", mysql.TypeFloat, charset.CharsetBin, mysql.BinaryFlag, 12, types.UnspecifiedLength},
{"nullif(c_double_d , 123)", mysql.TypeDouble, charset.CharsetBin, mysql.BinaryFlag, 22, types.UnspecifiedLength},
{"nullif(c_decimal , 123)", mysql.TypeNewDecimal, charset.CharsetBin, mysql.BinaryFlag, 6, 3},
{"nullif(c_datetime , 123)", mysql.TypeDatetime, charset.CharsetUTF8MB4, mysql.BinaryFlag, 22, 2},
{"nullif(c_time_d , 123)", mysql.TypeDuration, charset.CharsetUTF8MB4, mysql.BinaryFlag, 10, 0},
{"nullif(c_timestamp_d, 123)", mysql.TypeTimestamp, charset.CharsetUTF8MB4, mysql.BinaryFlag, 19, 0},
{"nullif(c_datetime , 123)", mysql.TypeDatetime, charset.CharsetBin, mysql.BinaryFlag, 22, 2},
{"nullif(c_time_d , 123)", mysql.TypeDuration, charset.CharsetBin, mysql.BinaryFlag, 10, 0},
{"nullif(c_timestamp_d, 123)", mysql.TypeTimestamp, charset.CharsetBin, mysql.BinaryFlag, 19, 0},
{"nullif(c_char , 123)", mysql.TypeString, charset.CharsetUTF8MB4, 0, 20, types.UnspecifiedLength},
{"nullif(c_varchar , 123)", mysql.TypeVarchar, charset.CharsetUTF8MB4, 0, 20, types.UnspecifiedLength}, // TODO: tp should be TypeVarString
{"nullif(c_text_d , 123)", mysql.TypeBlob, charset.CharsetUTF8MB4, 0, 65535, types.UnspecifiedLength}, // TODO: tp should be TypeMediumBlob
Expand Down