Mixed Type Foreign Key

enginetest/queries/foreign_key_queries.go

@@ -2789,6 +2789,122 @@ var CreateForeignKeyTests = []ScriptTest{
 			},
 		},
 	},
+	{
+		Name:    "char with foreign key",
+		Dialect: "mysql",
+		SetUpScript: []string{
+			"create table parent (c char(3) primary key);",
+			"insert into parent values ('abc'), ('def'), ('ghi');",
+		},
+		Assertions: []ScriptTestAssertion{
+			{
+				Query: "create table child_char_1 (c char(1), foreign key (c) references parent(c));",
+				Expected: []sql.Row{
+					{types.NewOkResult(0)},
+				},
+			},
+			{
+				Query:       "insert into child_char_1 values ('a');",
+				ExpectedErr: sql.ErrForeignKeyChildViolation,
+			},
+			{
+				Query:          "insert into child_char_1 values ('abc');",
+				ExpectedErrStr: "string 'abc' is too large for column 'c'",
+			},
+			{
+				Skip:  true,
+				Query: "create table child_varchar_10 (vc varchar(10), foreign key (vc) references parent(c));",
+				Expected: []sql.Row{
+					{types.NewOkResult(0)},
+				},
+			},
+			{
+				Skip:  true,
+				Query: "insert into child_varchar_10 values ('abc');",
+				Expected: []sql.Row{
+					{types.NewOkResult(1)},
+				},
+			},
+			{
+				Skip:        true,
+				Query:       "insert into child_varchar_10 values ('abcdefghij');",
+				ExpectedErr: sql.ErrForeignKeyChildViolation,
+			},
+		},
+	},
+	{
+		Name:    "binary with foreign key",
+		Dialect: "mysql",
+		SetUpScript: []string{
+			"create table parent (b binary(3) primary key);",
+			"insert into parent values ('abc'), ('def'), ('ghi');",
+		},
+		Assertions: []ScriptTestAssertion{
+			{
+				Query: "create table child_binary_1 (b binary(1), foreign key (b) references parent(b));",
+				Expected: []sql.Row{
+					{types.NewOkResult(0)},
+				},
+			},
+			{
+				Query:       "insert into child_binary_1 values ('a');",
+				ExpectedErr: sql.ErrForeignKeyChildViolation,
+			},
+			{
+				Query:          "insert into child_binary_1 values ('abc');",
+				ExpectedErrStr: "string 'abc' is too large for column 'b'",
+			},
+			{
+				Skip:  true,
+				Query: "create table child_varbinary_10 (vb varbinary(10), foreign key (vb) references parent(b));",
+				Expected: []sql.Row{
+					{types.NewOkResult(0)},
+				},
+			},
+			{
+				Skip:  true,
+				Query: "insert into child_varbinary_10 values ('abc');",
+				Expected: []sql.Row{
+					{types.NewOkResult(1)},
+				},
+			},
+			{
+				Skip:        true,
+				Query:       "insert into child_varbinary_10 values ('abcdefghij');",
+				ExpectedErr: sql.ErrForeignKeyChildViolation,
+			},
+		},
+	},
+	{
+		Name:    "mixed int type foreign key tests",
+		Dialect: "mysql",
+		SetUpScript: []string{
+			"create table parent (i int primary key);",
+			"insert into parent values (1), (2), (3);",
+		},
+		Assertions: []ScriptTestAssertion{
+			{
+				Query:       "create table child_tinyint (ti tinyint, foreign key (ti) references parent (i));",
+				ExpectedErr: sql.ErrForeignKeyColumnTypeMismatch,
+			},
+			{
+				Query:       "create table child_smallint (si tinyint, foreign key (si) references parent (i));",
+				ExpectedErr: sql.ErrForeignKeyColumnTypeMismatch,
+			},
+			{
+				Query:       "create table child_mediumint (mi tinyint, foreign key (mi) references parent (i));",
+				ExpectedErr: sql.ErrForeignKeyColumnTypeMismatch,
+			},
+			{
+				Query:       "create table child_bigint (ti tinyint, foreign key (ti) references parent (i));",
+				ExpectedErr: sql.ErrForeignKeyColumnTypeMismatch,
+			},
+			{
+				Query:       "create table child_unsigned (i int unsigned, foreign key (i) references parent (i));",
+				ExpectedErr: sql.ErrForeignKeyColumnTypeMismatch,
+			},
+		},
+	},
 }
 
 var DropForeignKeyTests = []ScriptTest{