MDEV-16152 Expressions with INTERVAL return bad results in some cases

mysql-test/main/func_time.result

@@ -3484,3 +3484,30 @@ t1	CREATE TABLE `t1` (
   `c5` varchar(100) DEFAULT NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 DROP TABLE t1;
+#
+# MDEV-16152 Expressions with INTERVAL return bad results in some cases
+#
+SELECT TIMESTAMP'2001-01-01 10:20:30' - INTERVAL '10' YEAR AS c1,
+-INTERVAL '10' YEAR + TIMESTAMP'2001-01-01 10:20:30' AS c2;
+c1	c2
+1991-01-01 10:20:30	1991-01-01 10:20:30
+SELECT TIMESTAMP'2001-01-01 10:20:30' + INTERVAL '10' YEAR AS c1,
+INTERVAL '10' YEAR + TIMESTAMP'2001-01-01 10:20:30' AS c2,
++INTERVAL '10' YEAR + TIMESTAMP'2001-01-01 10:20:30' AS c3;
+c1	c2	c3
+2011-01-01 10:20:30	2011-01-01 10:20:30	2011-01-01 10:20:30
+EXPLAIN EXTENDED SELECT
+TIMESTAMP'2001-01-01 10:20:30' - INTERVAL '10' YEAR AS c1,
+-INTERVAL '10' YEAR + TIMESTAMP'2001-01-01 10:20:30' AS c2;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+Warnings:
+Note	1003	select TIMESTAMP'2001-01-01 10:20:30' - interval '10' year AS `c1`,TIMESTAMP'2001-01-01 10:20:30' - interval '10' year AS `c2`
+EXPLAIN EXTENDED SELECT
+TIMESTAMP'2001-01-01 10:20:30' + INTERVAL '10' YEAR AS c1,
+INTERVAL '10' YEAR + TIMESTAMP'2001-01-01 10:20:30' AS c2,
++INTERVAL '10' YEAR + TIMESTAMP'2001-01-01 10:20:30' AS c3;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+Warnings:
+Note	1003	select TIMESTAMP'2001-01-01 10:20:30' + interval '10' year AS `c1`,TIMESTAMP'2001-01-01 10:20:30' + interval '10' year AS `c2`,TIMESTAMP'2001-01-01 10:20:30' + interval '10' year AS `c3`

mysql-test/main/func_time.test

@@ -2057,3 +2057,23 @@ EXECUTE IMMEDIATE
 USING NULL, '10', 10, 10.0, 10e0, TIME'10:20:30';
 SHOW CREATE TABLE t1;
 DROP TABLE t1;
+
+--echo #
+--echo # MDEV-16152 Expressions with INTERVAL return bad results in some cases
+--echo #
+
+SELECT TIMESTAMP'2001-01-01 10:20:30' - INTERVAL '10' YEAR AS c1,
+      -INTERVAL '10' YEAR + TIMESTAMP'2001-01-01 10:20:30' AS c2;
+
+SELECT TIMESTAMP'2001-01-01 10:20:30' + INTERVAL '10' YEAR AS c1,
+       INTERVAL '10' YEAR + TIMESTAMP'2001-01-01 10:20:30' AS c2,
+      +INTERVAL '10' YEAR + TIMESTAMP'2001-01-01 10:20:30' AS c3;
+
+EXPLAIN EXTENDED SELECT
+  TIMESTAMP'2001-01-01 10:20:30' - INTERVAL '10' YEAR AS c1,
+  -INTERVAL '10' YEAR + TIMESTAMP'2001-01-01 10:20:30' AS c2;
+
+EXPLAIN EXTENDED SELECT
+  TIMESTAMP'2001-01-01 10:20:30' + INTERVAL '10' YEAR AS c1,
+  INTERVAL '10' YEAR + TIMESTAMP'2001-01-01 10:20:30' AS c2,
+  +INTERVAL '10' YEAR + TIMESTAMP'2001-01-01 10:20:30' AS c3;

mysql-test/suite/compat/oracle/r/func_time.result

+SET sql_mode=ORACLE;
+#
+# Start of 10.3 tests
+#
+#
+# MDEV-16152 Expressions with INTERVAL return bad results in some cases
+#
+SELECT TIMESTAMP'2001-01-01 10:20:30' - INTERVAL '10' YEAR AS c1,
+-INTERVAL '10' YEAR + TIMESTAMP'2001-01-01 10:20:30' AS c2;
+c1	c2
+1991-01-01 10:20:30	1991-01-01 10:20:30
+SELECT TIMESTAMP'2001-01-01 10:20:30' + INTERVAL '10' YEAR AS c1,
+INTERVAL '10' YEAR + TIMESTAMP'2001-01-01 10:20:30' AS c2,
++INTERVAL '10' YEAR + TIMESTAMP'2001-01-01 10:20:30' AS c3;
+c1	c2	c3
+2011-01-01 10:20:30	2011-01-01 10:20:30	2011-01-01 10:20:30
+EXPLAIN EXTENDED SELECT
+TIMESTAMP'2001-01-01 10:20:30' - INTERVAL '10' YEAR AS c1,
+-INTERVAL '10' YEAR + TIMESTAMP'2001-01-01 10:20:30' AS c2;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+Warnings:
+Note	1003	select TIMESTAMP'2001-01-01 10:20:30' - interval '10' year AS "c1",TIMESTAMP'2001-01-01 10:20:30' - interval '10' year AS "c2"
+EXPLAIN EXTENDED SELECT
+TIMESTAMP'2001-01-01 10:20:30' + INTERVAL '10' YEAR AS c1,
+INTERVAL '10' YEAR + TIMESTAMP'2001-01-01 10:20:30' AS c2,
++INTERVAL '10' YEAR + TIMESTAMP'2001-01-01 10:20:30' AS c3;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	filtered	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
+Warnings:
+Note	1003	select TIMESTAMP'2001-01-01 10:20:30' + interval '10' year AS "c1",TIMESTAMP'2001-01-01 10:20:30' + interval '10' year AS "c2",TIMESTAMP'2001-01-01 10:20:30' + interval '10' year AS "c3"

mysql-test/suite/compat/oracle/t/func_time.test

+SET sql_mode=ORACLE;
+
+--echo #
+--echo # Start of 10.3 tests
+--echo #
+
+--echo #
+--echo # MDEV-16152 Expressions with INTERVAL return bad results in some cases
+--echo #
+
+SELECT TIMESTAMP'2001-01-01 10:20:30' - INTERVAL '10' YEAR AS c1,
+      -INTERVAL '10' YEAR + TIMESTAMP'2001-01-01 10:20:30' AS c2;
+
+SELECT TIMESTAMP'2001-01-01 10:20:30' + INTERVAL '10' YEAR AS c1,
+       INTERVAL '10' YEAR + TIMESTAMP'2001-01-01 10:20:30' AS c2,
+      +INTERVAL '10' YEAR + TIMESTAMP'2001-01-01 10:20:30' AS c3;
+
+EXPLAIN EXTENDED SELECT
+  TIMESTAMP'2001-01-01 10:20:30' - INTERVAL '10' YEAR AS c1,
+  -INTERVAL '10' YEAR + TIMESTAMP'2001-01-01 10:20:30' AS c2;
+
+EXPLAIN EXTENDED SELECT
+  TIMESTAMP'2001-01-01 10:20:30' + INTERVAL '10' YEAR AS c1,
+  INTERVAL '10' YEAR + TIMESTAMP'2001-01-01 10:20:30' AS c2,
+  +INTERVAL '10' YEAR + TIMESTAMP'2001-01-01 10:20:30' AS c3;

sql/sql_yacc.yy

@@ -9776,6 +9776,25 @@ bit_expr:
             if (unlikely($$ == NULL))
               MYSQL_YYABORT;
           }
+        | INTERVAL_SYM expr interval '+' expr %prec INTERVAL_SYM
+          /* we cannot put interval before - */
+          {
+            $$= new (thd->mem_root) Item_date_add_interval(thd, $5, $2, $3, 0);
+            if (unlikely($$ == NULL))
+              MYSQL_YYABORT;
+          }
+        | '+' INTERVAL_SYM expr interval '+' expr %prec NEG
+          {
+            $$= new (thd->mem_root) Item_date_add_interval(thd, $6, $3, $4, 0);
+            if (unlikely($$ == NULL))
+              MYSQL_YYABORT;
+          }
+        | '-' INTERVAL_SYM expr interval '+' expr %prec NEG
+          {
+            $$= new (thd->mem_root) Item_date_add_interval(thd, $6, $3, $4, 1);
+            if (unlikely($$ == NULL))
+              MYSQL_YYABORT;
+          }
         | bit_expr '*' bit_expr %prec '*'
           {
             $$= new (thd->mem_root) Item_func_mul(thd, $1, $3);
@@ -10133,13 +10152,6 @@ simple_expr:
             if (unlikely($$ == NULL))
               MYSQL_YYABORT;
           }
-        | INTERVAL_SYM expr interval '+' expr %prec INTERVAL_SYM
-          /* we cannot put interval before - */
-          {
-            $$= new (thd->mem_root) Item_date_add_interval(thd, $5, $2, $3, 0);
-            if (unlikely($$ == NULL))
-              MYSQL_YYABORT;
-          }
         ;
 
 function_call_keyword_timestamp:

sql/sql_yacc_ora.yy

@@ -9526,6 +9526,25 @@ bit_expr:
             if (unlikely($$ == NULL))
               MYSQL_YYABORT;
           }
+        | INTERVAL_SYM expr interval '+' expr %prec INTERVAL_SYM
+          /* we cannot put interval before - */
+          {
+            $$= new (thd->mem_root) Item_date_add_interval(thd, $5, $2, $3, 0);
+            if (unlikely($$ == NULL))
+              MYSQL_YYABORT;
+          }
+        | '+' INTERVAL_SYM expr interval '+' expr %prec NEG
+          {
+            $$= new (thd->mem_root) Item_date_add_interval(thd, $6, $3, $4, 0);
+            if (unlikely($$ == NULL))
+              MYSQL_YYABORT;
+          }
+        | '-' INTERVAL_SYM expr interval '+' expr %prec NEG
+          {
+            $$= new (thd->mem_root) Item_date_add_interval(thd, $6, $3, $4, 1);
+            if (unlikely($$ == NULL))
+              MYSQL_YYABORT;
+          }
         | bit_expr '*' bit_expr %prec '*'
           {
             $$= new (thd->mem_root) Item_func_mul(thd, $1, $3);
@@ -9935,13 +9954,6 @@ simple_expr:
             if (unlikely($$ == NULL))
               MYSQL_YYABORT;
           }
-        | INTERVAL_SYM expr interval '+' expr %prec INTERVAL_SYM
-          /* we cannot put interval before - */
-          {
-            $$= new (thd->mem_root) Item_date_add_interval(thd, $5, $2, $3, 0);
-            if (unlikely($$ == NULL))
-              MYSQL_YYABORT;
-          }
         ;
 
 /*