MDEV-12619 UNION creates excessive integer column types for integer literals

mysql-test/r/gis.result

@@ -4030,65 +4030,65 @@ DROP TABLE t1;
 #
 CREATE TABLE t1 (a GEOMETRY);
 SELECT POINT(1,1) + 1;
-ERROR HY000: Illegal parameter data types geometry and bigint for operation '+'
+ERROR HY000: Illegal parameter data types geometry and int for operation '+'
 SELECT POINT(1,1) - 1;
-ERROR HY000: Illegal parameter data types geometry and bigint for operation '-'
+ERROR HY000: Illegal parameter data types geometry and int for operation '-'
 SELECT POINT(1,1) * 1;
-ERROR HY000: Illegal parameter data types geometry and bigint for operation '*'
+ERROR HY000: Illegal parameter data types geometry and int for operation '*'
 SELECT POINT(1,1) / 1;
-ERROR HY000: Illegal parameter data types geometry and bigint for operation '/'
+ERROR HY000: Illegal parameter data types geometry and int for operation '/'
 SELECT POINT(1,1) MOD 1;
-ERROR HY000: Illegal parameter data types geometry and bigint for operation '%'
+ERROR HY000: Illegal parameter data types geometry and int for operation '%'
 SELECT 1 + POINT(1,1);
-ERROR HY000: Illegal parameter data types bigint and geometry for operation '+'
+ERROR HY000: Illegal parameter data types int and geometry for operation '+'
 SELECT 1 - POINT(1,1);
-ERROR HY000: Illegal parameter data types bigint and geometry for operation '-'
+ERROR HY000: Illegal parameter data types int and geometry for operation '-'
 SELECT 1 * POINT(1,1);
-ERROR HY000: Illegal parameter data types bigint and geometry for operation '*'
+ERROR HY000: Illegal parameter data types int and geometry for operation '*'
 SELECT 1 / POINT(1,1);
-ERROR HY000: Illegal parameter data types bigint and geometry for operation '/'
+ERROR HY000: Illegal parameter data types int and geometry for operation '/'
 SELECT 1 MOD POINT(1,1);
-ERROR HY000: Illegal parameter data types bigint and geometry for operation '%'
+ERROR HY000: Illegal parameter data types int and geometry for operation '%'
 SELECT a + 1 FROM t1;
-ERROR HY000: Illegal parameter data types geometry and bigint for operation '+'
+ERROR HY000: Illegal parameter data types geometry and int for operation '+'
 SELECT a - 1 FROM t1;
-ERROR HY000: Illegal parameter data types geometry and bigint for operation '-'
+ERROR HY000: Illegal parameter data types geometry and int for operation '-'
 SELECT a * 1 FROM t1;
-ERROR HY000: Illegal parameter data types geometry and bigint for operation '*'
+ERROR HY000: Illegal parameter data types geometry and int for operation '*'
 SELECT a / 1 FROM t1;
-ERROR HY000: Illegal parameter data types geometry and bigint for operation '/'
+ERROR HY000: Illegal parameter data types geometry and int for operation '/'
 SELECT a MOD 1 FROM t1;
-ERROR HY000: Illegal parameter data types geometry and bigint for operation '%'
+ERROR HY000: Illegal parameter data types geometry and int for operation '%'
 SELECT 1 + a FROM t1;
-ERROR HY000: Illegal parameter data types bigint and geometry for operation '+'
+ERROR HY000: Illegal parameter data types int and geometry for operation '+'
 SELECT 1 - a FROM t1;
-ERROR HY000: Illegal parameter data types bigint and geometry for operation '-'
+ERROR HY000: Illegal parameter data types int and geometry for operation '-'
 SELECT 1 * a FROM t1;
-ERROR HY000: Illegal parameter data types bigint and geometry for operation '*'
+ERROR HY000: Illegal parameter data types int and geometry for operation '*'
 SELECT 1 / a FROM t1;
-ERROR HY000: Illegal parameter data types bigint and geometry for operation '/'
+ERROR HY000: Illegal parameter data types int and geometry for operation '/'
 SELECT 1 MOD a FROM t1;
-ERROR HY000: Illegal parameter data types bigint and geometry for operation '%'
+ERROR HY000: Illegal parameter data types int and geometry for operation '%'
 SELECT COALESCE(a) + 1 FROM t1;
-ERROR HY000: Illegal parameter data types geometry and bigint for operation '+'
+ERROR HY000: Illegal parameter data types geometry and int for operation '+'
 SELECT COALESCE(a) - 1 FROM t1;
-ERROR HY000: Illegal parameter data types geometry and bigint for operation '-'
+ERROR HY000: Illegal parameter data types geometry and int for operation '-'
 SELECT COALESCE(a) * 1 FROM t1;
-ERROR HY000: Illegal parameter data types geometry and bigint for operation '*'
+ERROR HY000: Illegal parameter data types geometry and int for operation '*'
 SELECT COALESCE(a) / 1 FROM t1;
-ERROR HY000: Illegal parameter data types geometry and bigint for operation '/'
+ERROR HY000: Illegal parameter data types geometry and int for operation '/'
 SELECT COALESCE(a) MOD 1 FROM t1;
-ERROR HY000: Illegal parameter data types geometry and bigint for operation '%'
+ERROR HY000: Illegal parameter data types geometry and int for operation '%'
 SELECT 1 + COALESCE(a) FROM t1;
-ERROR HY000: Illegal parameter data types bigint and geometry for operation '+'
+ERROR HY000: Illegal parameter data types int and geometry for operation '+'
 SELECT 1 - COALESCE(a) FROM t1;
-ERROR HY000: Illegal parameter data types bigint and geometry for operation '-'
+ERROR HY000: Illegal parameter data types int and geometry for operation '-'
 SELECT 1 * COALESCE(a) FROM t1;
-ERROR HY000: Illegal parameter data types bigint and geometry for operation '*'
+ERROR HY000: Illegal parameter data types int and geometry for operation '*'
 SELECT 1 / COALESCE(a) FROM t1;
-ERROR HY000: Illegal parameter data types bigint and geometry for operation '/'
+ERROR HY000: Illegal parameter data types int and geometry for operation '/'
 SELECT 1 MOD COALESCE(a) FROM t1;
-ERROR HY000: Illegal parameter data types bigint and geometry for operation '%'
+ERROR HY000: Illegal parameter data types int and geometry for operation '%'
 DROP TABLE t1;
 #
 # MDEV-12514 Split Item_temporal_func::fix_length_and_dec()

mysql-test/r/metadata.result

@@ -76,12 +76,12 @@ def			aaa	@arg00	@arg00	8	20	1	Y	32768	0	63
 1
 select 1 union select 1;
 Catalog	Database	Table	Table_alias	Column	Column_alias	Type	Length	Max length	Is_null	Flags	Decimals	Charsetnr
-def				1	1	8	20	1	N	32769	0	63
+def				1	1	3	11	1	N	32769	0	63
 1
 1
 select * from (select 1 union select 1) aaa;
 Catalog	Database	Table	Table_alias	Column	Column_alias	Type	Length	Max length	Is_null	Flags	Decimals	Charsetnr
-def			aaa	1	1	8	20	1	N	32769	0	63
+def			aaa	1	1	3	11	1	N	32769	0	63
 1
 1
 drop table t1;

mysql-test/r/union.result

@@ -852,7 +852,7 @@ select * from t1;
 show create table t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `1` bigint(20) NOT NULL DEFAULT 0
+  `1` int(11) NOT NULL DEFAULT 0
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 drop table t1;
 create table t1 select _latin1"test" union select _latin2"testt" ;
@@ -2178,3 +2178,33 @@ WHERE t1_2.b NOT IN ( SELECT 4 UNION ALL SELECT 5 );
 a	b	a	b
 1	1	1	1
 DROP TABLE t1;
+#
+# Start of 10.3 tests
+#
+#
+# MDEV-12619 UNION creates excessive integer column types for integer literals
+#
+CREATE TABLE t1 AS SELECT 1;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `1` int(1) NOT NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t1;
+CREATE OR REPLACE TABLE t1 AS SELECT 1 UNION SELECT 1;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `1` int(11) NOT NULL DEFAULT 0
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t1;
+CREATE OR REPLACE TABLE t1 AS SELECT * FROM (SELECT 1 UNION SELECT 1) AS t0;
+SHOW CREATE TABLE t1;
+Table	Create Table
+t1	CREATE TABLE `t1` (
+  `1` int(11) NOT NULL DEFAULT 0
+) ENGINE=MyISAM DEFAULT CHARSET=latin1
+DROP TABLE t1;
+#
+# End of 10.3 tests
+#

mysql-test/suite/innodb_gis/r/create_spatial_index.result

@@ -1238,7 +1238,7 @@ Table	Op	Msg_type	Msg_text
 test.tab	check	status	OK
 DROP TABLE tab;
 CREATE TABLE tab(c1 POINT NOT NULL,CONSTRAINT tab_const check(c1 > 0) ) ENGINE=InnoDB;
-ERROR HY000: Illegal parameter data types geometry and bigint for operation '>'
+ERROR HY000: Illegal parameter data types geometry and int for operation '>'
 CREATE TABLE tab(c1 POINT NOT NULL,CONSTRAINT tab_const check(CAST(c1 AS BINARY) > 0) ) ENGINE=InnoDB;
 CREATE SPATIAL INDEX idx1 ON tab(c1) ;
 SHOW CREATE TABLE tab;

mysql-test/t/union.test

@@ -1523,3 +1523,27 @@ SELECT * FROM t1 t1_1 LEFT JOIN t1 t1_2 ON ( t1_2.b = t1_1.a )
   WHERE t1_2.b NOT IN ( SELECT 4 UNION ALL SELECT 5 );
 
 DROP TABLE t1;
+
+--echo #
+--echo # Start of 10.3 tests
+--echo #
+
+--echo #
+--echo # MDEV-12619 UNION creates excessive integer column types for integer literals
+--echo #
+
+CREATE TABLE t1 AS SELECT 1;
+SHOW CREATE TABLE t1;
+DROP TABLE t1;
+
+CREATE OR REPLACE TABLE t1 AS SELECT 1 UNION SELECT 1;
+SHOW CREATE TABLE t1;
+DROP TABLE t1;
+
+CREATE OR REPLACE TABLE t1 AS SELECT * FROM (SELECT 1 UNION SELECT 1) AS t0;
+SHOW CREATE TABLE t1;
+DROP TABLE t1;
+
+--echo #
+--echo # End of 10.3 tests
+--echo #

sql/item.h

@@ -3207,6 +3207,17 @@ class Item_int :public Item_num
   enum Type type() const { return INT_ITEM; }
   enum Item_result result_type () const { return INT_RESULT; }
   enum_field_types field_type() const { return MYSQL_TYPE_LONGLONG; }
+  const Type_handler *type_handler() const
+  {
+    // The same condition is repeated in Item::create_tmp_field()
+    if (max_length > MY_INT32_NUM_DECIMAL_DIGITS - 2)
+      return &type_handler_longlong;
+    return &type_handler_long;
+  }
+  Field *create_tmp_field(bool group, TABLE *table)
+  { return tmp_table_field_from_field_type(table); }
+  Field *create_field_for_create_select(TABLE *table)
+  { return tmp_table_field_from_field_type(table); }
   longlong val_int() { DBUG_ASSERT(fixed == 1); return value; }
   double val_real() { DBUG_ASSERT(fixed == 1); return (double) value; }
   my_decimal *val_decimal(my_decimal *);
@@ -3717,6 +3728,10 @@ class Item_return_int :public Item_int
     unsigned_flag=1;
   }
   enum_field_types field_type() const { return int_field_type; }
+  const Type_handler *type_handler() const
+  {
+    return Type_handler::get_handler_by_field_type(int_field_type);
+  }
 };