MDEV-415: Back-port of the WL task #1393 from the mysql-5.6 code line.

The task adds a more efficient handling of the queries with 
ORDER BY order LIMIT n, such that n is small enough and
no indexes are used for order.

1 files changed, 885 insertions, 0 deletions

diff --git a/mysql-test/r/order_by.result b/mysql-test/r/order_by.result
index d320b5b669f..d1c49aaa8c4 100644
--- a/mysql-test/r/order_by.result
+++ b/mysql-test/r/order_by.result
@@ -1439,6 +1439,7 @@ CALL mtr.add_suppression("Out of sort memory");
 select * from t1 order by b;
 ERROR HY001: Out of sort memory, consider increasing server sort buffer size
 drop table t1;
+set session sort_buffer_size= 30000;
 #
 # Bug #39844: Query Crash Mysql Server 5.0.67
 #
@@ -1533,6 +1534,890 @@ ppfcz1	DE	ppfcz1	14	8	57.5
 ppfcz1	DE	ppfcz1	14	9	59.5
 ppfcz1	DE	ppfcz1	14	10	61.5
 DROP TABLE t1,t2,t3;
+#
+# WL#1393 - Optimizing filesort with small limit
+#
+CREATE TABLE t1(f0 int auto_increment primary key, f1 int, f2 varchar(200));
+INSERT INTO t1(f1, f2) VALUES 
+(0,"0"),(1,"1"),(2,"2"),(3,"3"),(4,"4"),(5,"5"),
+(6,"6"),(7,"7"),(8,"8"),(9,"9"),(10,"10"),
+(11,"11"),(12,"12"),(13,"13"),(14,"14"),(15,"15"),
+(16,"16"),(17,"17"),(18,"18"),(19,"19"),(20,"20"),
+(21,"21"),(22,"22"),(23,"23"),(24,"24"),(25,"25"),
+(26,"26"),(27,"27"),(28,"28"),(29,"29"),(30,"30"),
+(31,"31"),(32,"32"),(33,"33"),(34,"34"),(35,"35"),
+(36,"36"),(37,"37"),(38,"38"),(39,"39"),(40,"40"),
+(41,"41"),(42,"42"),(43,"43"),(44,"44"),(45,"45"),
+(46,"46"),(47,"47"),(48,"48"),(49,"49"),(50,"50"),
+(51,"51"),(52,"52"),(53,"53"),(54,"54"),(55,"55"),
+(56,"56"),(57,"57"),(58,"58"),(59,"59"),(60,"60"),
+(61,"61"),(62,"62"),(63,"63"),(64,"64"),(65,"65"),
+(66,"66"),(67,"67"),(68,"68"),(69,"69"),(70,"70"),
+(71,"71"),(72,"72"),(73,"73"),(74,"74"),(75,"75"),
+(76,"76"),(77,"77"),(78,"78"),(79,"79"),(80,"80"),
+(81,"81"),(82,"82"),(83,"83"),(84,"84"),(85,"85"),
+(86,"86"),(87,"87"),(88,"88"),(89,"89"),(90,"90"),
+(91,"91"),(92,"92"),(93,"93"),(94,"94"),(95,"95"),
+(96,"96"),(97,"97"),(98,"98"),(99,"99");
+SELECT * FROM t1 ORDER BY f1 ASC, f0 LIMIT 100;
+f0	f1	f2
+1	0	0
+2	1	1
+3	2	2
+4	3	3
+5	4	4
+6	5	5
+7	6	6
+8	7	7
+9	8	8
+10	9	9
+11	10	10
+12	11	11
+13	12	12
+14	13	13
+15	14	14
+16	15	15
+17	16	16
+18	17	17
+19	18	18
+20	19	19
+21	20	20
+22	21	21
+23	22	22
+24	23	23
+25	24	24
+26	25	25
+27	26	26
+28	27	27
+29	28	28
+30	29	29
+31	30	30
+32	31	31
+33	32	32
+34	33	33
+35	34	34
+36	35	35
+37	36	36
+38	37	37
+39	38	38
+40	39	39
+41	40	40
+42	41	41
+43	42	42
+44	43	43
+45	44	44
+46	45	45
+47	46	46
+48	47	47
+49	48	48
+50	49	49
+51	50	50
+52	51	51
+53	52	52
+54	53	53
+55	54	54
+56	55	55
+57	56	56
+58	57	57
+59	58	58
+60	59	59
+61	60	60
+62	61	61
+63	62	62
+64	63	63
+65	64	64
+66	65	65
+67	66	66
+68	67	67
+69	68	68
+70	69	69
+71	70	70
+72	71	71
+73	72	72
+74	73	73
+75	74	74
+76	75	75
+77	76	76
+78	77	77
+79	78	78
+80	79	79
+81	80	80
+82	81	81
+83	82	82
+84	83	83
+85	84	84
+86	85	85
+87	86	86
+88	87	87
+89	88	88
+90	89	89
+91	90	90
+92	91	91
+93	92	92
+94	93	93
+95	94	94
+96	95	95
+97	96	96
+98	97	97
+99	98	98
+100	99	99
+SELECT * FROM t1 ORDER BY f1 ASC, f0 LIMIT 30;
+f0	f1	f2
+1	0	0
+2	1	1
+3	2	2
+4	3	3
+5	4	4
+6	5	5
+7	6	6
+8	7	7
+9	8	8
+10	9	9
+11	10	10
+12	11	11
+13	12	12
+14	13	13
+15	14	14
+16	15	15
+17	16	16
+18	17	17
+19	18	18
+20	19	19
+21	20	20
+22	21	21
+23	22	22
+24	23	23
+25	24	24
+26	25	25
+27	26	26
+28	27	27
+29	28	28
+30	29	29
+SELECT * FROM t1 ORDER BY f1 ASC, f0 LIMIT 0;
+f0	f1	f2
+SELECT * FROM t1 ORDER BY f2 DESC, f0 LIMIT 30;
+f0	f1	f2
+100	99	99
+99	98	98
+98	97	97
+97	96	96
+96	95	95
+95	94	94
+94	93	93
+93	92	92
+92	91	91
+91	90	90
+10	9	9
+90	89	89
+89	88	88
+88	87	87
+87	86	86
+86	85	85
+85	84	84
+84	83	83
+83	82	82
+82	81	81
+81	80	80
+9	8	8
+80	79	79
+79	78	78
+78	77	77
+77	76	76
+76	75	75
+75	74	74
+74	73	73
+73	72	72
+SELECT * FROM t1 ORDER BY f2 DESC, f0 LIMIT 0;
+f0	f1	f2
+SELECT * FROM t1 WHERE f1>10 ORDER BY f2, f0 LIMIT 20;
+f0	f1	f2
+12	11	11
+13	12	12
+14	13	13
+15	14	14
+16	15	15
+17	16	16
+18	17	17
+19	18	18
+20	19	19
+21	20	20
+22	21	21
+23	22	22
+24	23	23
+25	24	24
+26	25	25
+27	26	26
+28	27	27
+29	28	28
+30	29	29
+31	30	30
+SELECT * FROM t1 WHERE f1>10 ORDER BY f2, f0 LIMIT 0;
+f0	f1	f2
+SELECT * FROM t1 WHERE f1>10 ORDER BY f2, f0 LIMIT 10 OFFSET 10;
+f0	f1	f2
+22	21	21
+23	22	22
+24	23	23
+25	24	24
+26	25	25
+27	26	26
+28	27	27
+29	28	28
+30	29	29
+31	30	30
+SELECT * FROM t1 WHERE f1>10 ORDER BY f2, f0 LIMIT 0 OFFSET 10;
+f0	f1	f2
+set sort_buffer_size= 32768;
+CREATE TEMPORARY TABLE tmp (f1 int, f2 varchar(20));
+INSERT INTO tmp SELECT f1, f2 FROM t1;
+INSERT INTO t1(f1, f2) SELECT * FROM tmp;
+INSERT INTO tmp SELECT f1, f2 FROM t1;
+INSERT INTO t1(f1, f2) SELECT * FROM tmp;
+SELECT * FROM t1 ORDER BY f1 ASC, f0 LIMIT 30;
+f0	f1	f2
+1	0	0
+101	0	0
+201	0	0
+301	0	0
+401	0	0
+2	1	1
+102	1	1
+202	1	1
+302	1	1
+402	1	1
+3	2	2
+103	2	2
+203	2	2
+303	2	2
+403	2	2
+4	3	3
+104	3	3
+204	3	3
+304	3	3
+404	3	3
+5	4	4
+105	4	4
+205	4	4
+305	4	4
+405	4	4
+6	5	5
+106	5	5
+206	5	5
+306	5	5
+406	5	5
+SELECT * FROM t1 ORDER BY f1 ASC, f0 LIMIT 0;
+f0	f1	f2
+SELECT * FROM t1 ORDER BY f2 DESC, f0 LIMIT 30;
+f0	f1	f2
+100	99	99
+200	99	99
+300	99	99
+400	99	99
+500	99	99
+99	98	98
+199	98	98
+299	98	98
+399	98	98
+499	98	98
+98	97	97
+198	97	97
+298	97	97
+398	97	97
+498	97	97
+97	96	96
+197	96	96
+297	96	96
+397	96	96
+497	96	96
+96	95	95
+196	95	95
+296	95	95
+396	95	95
+496	95	95
+95	94	94
+195	94	94
+295	94	94
+395	94	94
+495	94	94
+SELECT * FROM t1 ORDER BY f2 DESC, f0 LIMIT 0;
+f0	f1	f2
+SELECT * FROM t1 WHERE f1>10 ORDER BY f2, f0 LIMIT 20;
+f0	f1	f2
+12	11	11
+112	11	11
+212	11	11
+312	11	11
+412	11	11
+13	12	12
+113	12	12
+213	12	12
+313	12	12
+413	12	12
+14	13	13
+114	13	13
+214	13	13
+314	13	13
+414	13	13
+15	14	14
+115	14	14
+215	14	14
+315	14	14
+415	14	14
+SELECT * FROM t1 WHERE f1>10 ORDER BY f2, f0 LIMIT 0;
+f0	f1	f2
+SELECT * FROM t1 WHERE f1>10 ORDER BY f2, f0 LIMIT 10 OFFSET 10;
+f0	f1	f2
+14	13	13
+114	13	13
+214	13	13
+314	13	13
+414	13	13
+15	14	14
+115	14	14
+215	14	14
+315	14	14
+415	14	14
+SELECT * FROM t1 WHERE f1>10 ORDER BY f2, f0 LIMIT 0 OFFSET 10;
+f0	f1	f2
+set sort_buffer_size= 32768;
+SELECT SQL_CALC_FOUND_ROWS * FROM t1
+ORDER BY f1, f0 LIMIT 30;
+f0	f1	f2
+1	0	0
+101	0	0
+201	0	0
+301	0	0
+401	0	0
+2	1	1
+102	1	1
+202	1	1
+302	1	1
+402	1	1
+3	2	2
+103	2	2
+203	2	2
+303	2	2
+403	2	2
+4	3	3
+104	3	3
+204	3	3
+304	3	3
+404	3	3
+5	4	4
+105	4	4
+205	4	4
+305	4	4
+405	4	4
+6	5	5
+106	5	5
+206	5	5
+306	5	5
+406	5	5
+SELECT FOUND_ROWS();
+FOUND_ROWS()
+500
+SELECT SQL_CALC_FOUND_ROWS * FROM t1
+ORDER BY f1, f0 LIMIT 0;
+f0	f1	f2
+SELECT FOUND_ROWS();
+FOUND_ROWS()
+500
+SELECT SQL_CALC_FOUND_ROWS * FROM t1 WHERE f1>10
+ORDER BY f2, f0 LIMIT 20;
+f0	f1	f2
+12	11	11
+112	11	11
+212	11	11
+312	11	11
+412	11	11
+13	12	12
+113	12	12
+213	12	12
+313	12	12
+413	12	12
+14	13	13
+114	13	13
+214	13	13
+314	13	13
+414	13	13
+15	14	14
+115	14	14
+215	14	14
+315	14	14
+415	14	14
+SELECT FOUND_ROWS();
+FOUND_ROWS()
+445
+SELECT SQL_CALC_FOUND_ROWS * FROM t1 WHERE f1>10
+ORDER BY f2, f0 LIMIT 0;
+f0	f1	f2
+SELECT FOUND_ROWS();
+FOUND_ROWS()
+445
+SELECT SQL_CALC_FOUND_ROWS * FROM t1 WHERE f1>10
+ORDER BY f2, f0 LIMIT 10 OFFSET 10;
+f0	f1	f2
+14	13	13
+114	13	13
+214	13	13
+314	13	13
+414	13	13
+15	14	14
+115	14	14
+215	14	14
+315	14	14
+415	14	14
+SELECT FOUND_ROWS();
+FOUND_ROWS()
+445
+SELECT SQL_CALC_FOUND_ROWS * FROM t1 WHERE f1>10
+ORDER BY f2, f0 LIMIT 0 OFFSET 10;
+f0	f1	f2
+SELECT FOUND_ROWS();
+FOUND_ROWS()
+445
+set sort_buffer_size= 327680;
+SELECT * FROM t1 JOIN tmp on t1.f2=tmp.f2
+ORDER BY tmp.f1, f0 LIMIT 30;
+f0	f1	f2	f1	f2
+1	0	0	0	0
+1	0	0	0	0
+1	0	0	0	0
+101	0	0	0	0
+101	0	0	0	0
+101	0	0	0	0
+201	0	0	0	0
+201	0	0	0	0
+201	0	0	0	0
+301	0	0	0	0
+301	0	0	0	0
+301	0	0	0	0
+401	0	0	0	0
+401	0	0	0	0
+401	0	0	0	0
+2	1	1	1	1
+2	1	1	1	1
+2	1	1	1	1
+102	1	1	1	1
+102	1	1	1	1
+102	1	1	1	1
+202	1	1	1	1
+202	1	1	1	1
+202	1	1	1	1
+302	1	1	1	1
+302	1	1	1	1
+302	1	1	1	1
+402	1	1	1	1
+402	1	1	1	1
+402	1	1	1	1
+SELECT * FROM t1 JOIN tmp on t1.f2=tmp.f2
+ORDER BY tmp.f1, f0 LIMIT 30 OFFSET 30;
+f0	f1	f2	f1	f2
+3	2	2	2	2
+3	2	2	2	2
+3	2	2	2	2
+103	2	2	2	2
+103	2	2	2	2
+103	2	2	2	2
+203	2	2	2	2
+203	2	2	2	2
+203	2	2	2	2
+303	2	2	2	2
+303	2	2	2	2
+303	2	2	2	2
+403	2	2	2	2
+403	2	2	2	2
+403	2	2	2	2
+4	3	3	3	3
+4	3	3	3	3
+4	3	3	3	3
+104	3	3	3	3
+104	3	3	3	3
+104	3	3	3	3
+204	3	3	3	3
+204	3	3	3	3
+204	3	3	3	3
+304	3	3	3	3
+304	3	3	3	3
+304	3	3	3	3
+404	3	3	3	3
+404	3	3	3	3
+404	3	3	3	3
+SELECT SQL_CALC_FOUND_ROWS * FROM t1 JOIN tmp on t1.f2=tmp.f2
+ORDER BY tmp.f1, f0 LIMIT 30 OFFSET 30;
+f0	f1	f2	f1	f2
+3	2	2	2	2
+3	2	2	2	2
+3	2	2	2	2
+103	2	2	2	2
+103	2	2	2	2
+103	2	2	2	2
+203	2	2	2	2
+203	2	2	2	2
+203	2	2	2	2
+303	2	2	2	2
+303	2	2	2	2
+303	2	2	2	2
+403	2	2	2	2
+403	2	2	2	2
+403	2	2	2	2
+4	3	3	3	3
+4	3	3	3	3
+4	3	3	3	3
+104	3	3	3	3
+104	3	3	3	3
+104	3	3	3	3
+204	3	3	3	3
+204	3	3	3	3
+204	3	3	3	3
+304	3	3	3	3
+304	3	3	3	3
+304	3	3	3	3
+404	3	3	3	3
+404	3	3	3	3
+404	3	3	3	3
+SELECT FOUND_ROWS();
+FOUND_ROWS()
+1500
+SELECT SQL_CALC_FOUND_ROWS * FROM t1 JOIN tmp on t1.f2=tmp.f2
+WHERE t1.f2>20
+ORDER BY tmp.f1, f0 LIMIT 30 OFFSET 30;
+f0	f1	f2	f1	f2
+24	23	23	23	23
+24	23	23	23	23
+24	23	23	23	23
+124	23	23	23	23
+124	23	23	23	23
+124	23	23	23	23
+224	23	23	23	23
+224	23	23	23	23
+224	23	23	23	23
+324	23	23	23	23
+324	23	23	23	23
+324	23	23	23	23
+424	23	23	23	23
+424	23	23	23	23
+424	23	23	23	23
+25	24	24	24	24
+25	24	24	24	24
+25	24	24	24	24
+125	24	24	24	24
+125	24	24	24	24
+125	24	24	24	24
+225	24	24	24	24
+225	24	24	24	24
+225	24	24	24	24
+325	24	24	24	24
+325	24	24	24	24
+325	24	24	24	24
+425	24	24	24	24
+425	24	24	24	24
+425	24	24	24	24
+SELECT FOUND_ROWS();
+FOUND_ROWS()
+1185
+CREATE VIEW v1 as SELECT * FROM t1 ORDER BY f1, f0 LIMIT 30;
+SELECT * FROM v1;
+f0	f1	f2
+1	0	0
+101	0	0
+201	0	0
+301	0	0
+401	0	0
+2	1	1
+102	1	1
+202	1	1
+302	1	1
+402	1	1
+3	2	2
+103	2	2
+203	2	2
+303	2	2
+403	2	2
+4	3	3
+104	3	3
+204	3	3
+304	3	3
+404	3	3
+5	4	4
+105	4	4
+205	4	4
+305	4	4
+405	4	4
+6	5	5
+106	5	5
+206	5	5
+306	5	5
+406	5	5
+drop view v1;
+CREATE VIEW v1 as SELECT * FROM t1 ORDER BY f1, f0 LIMIT 100;
+SELECT * FROM v1 ORDER BY f2, f0 LIMIT 30;
+f0	f1	f2
+1	0	0
+101	0	0
+201	0	0
+301	0	0
+401	0	0
+2	1	1
+102	1	1
+202	1	1
+302	1	1
+402	1	1
+11	10	10
+111	10	10
+211	10	10
+311	10	10
+411	10	10
+12	11	11
+112	11	11
+212	11	11
+312	11	11
+412	11	11
+13	12	12
+113	12	12
+213	12	12
+313	12	12
+413	12	12
+14	13	13
+114	13	13
+214	13	13
+314	13	13
+414	13	13
+CREATE VIEW v2 as SELECT * FROM t1 ORDER BY f2, f0 LIMIT 100;
+SELECT * FROM v1 JOIN v2 on v1.f1=v2.f1 ORDER BY v1.f2,v1.f0,v2.f0
+LIMIT 30;
+f0	f1	f2	f0	f1	f2
+1	0	0	1	0	0
+1	0	0	101	0	0
+1	0	0	201	0	0
+1	0	0	301	0	0
+1	0	0	401	0	0
+101	0	0	1	0	0
+101	0	0	101	0	0
+101	0	0	201	0	0
+101	0	0	301	0	0
+101	0	0	401	0	0
+201	0	0	1	0	0
+201	0	0	101	0	0
+201	0	0	201	0	0
+201	0	0	301	0	0
+201	0	0	401	0	0
+301	0	0	1	0	0
+301	0	0	101	0	0
+301	0	0	201	0	0
+301	0	0	301	0	0
+301	0	0	401	0	0
+401	0	0	1	0	0
+401	0	0	101	0	0
+401	0	0	201	0	0
+401	0	0	301	0	0
+401	0	0	401	0	0
+2	1	1	2	1	1
+2	1	1	102	1	1
+2	1	1	202	1	1
+2	1	1	302	1	1
+2	1	1	402	1	1
+SELECT floor(f1/10) f3, count(f2) FROM t1
+GROUP BY 1 ORDER BY 2,1 LIMIT 5;
+f3	count(f2)
+0	50
+1	50
+2	50
+3	50
+4	50
+SELECT floor(f1/10) f3, count(f2) FROM t1
+GROUP BY 1 ORDER BY 2,1 LIMIT 0;
+f3	count(f2)
+CREATE PROCEDURE wl1393_sp_test()
+BEGIN
+SELECT * FROM t1 WHERE f1>10 ORDER BY f2, f0 LIMIT 30;
+SELECT * FROM t1 WHERE f1>10 ORDER BY f2, f0 LIMIT 15 OFFSET 15;
+SELECT SQL_CALC_FOUND_ROWS * FROM t1 WHERE f1>10
+ORDER BY f2, f0 LIMIT 15 OFFSET 15;
+SELECT FOUND_ROWS();
+SELECT * FROM v1 ORDER BY f2, f0 LIMIT 30;
+END|
+CALL wl1393_sp_test()|
+f0	f1	f2
+12	11	11
+112	11	11
+212	11	11
+312	11	11
+412	11	11
+13	12	12
+113	12	12
+213	12	12
+313	12	12
+413	12	12
+14	13	13
+114	13	13
+214	13	13
+314	13	13
+414	13	13
+15	14	14
+115	14	14
+215	14	14
+315	14	14
+415	14	14
+16	15	15
+116	15	15
+216	15	15
+316	15	15
+416	15	15
+17	16	16
+117	16	16
+217	16	16
+317	16	16
+417	16	16
+f0	f1	f2
+15	14	14
+115	14	14
+215	14	14
+315	14	14
+415	14	14
+16	15	15
+116	15	15
+216	15	15
+316	15	15
+416	15	15
+17	16	16
+117	16	16
+217	16	16
+317	16	16
+417	16	16
+f0	f1	f2
+15	14	14
+115	14	14
+215	14	14
+315	14	14
+415	14	14
+16	15	15
+116	15	15
+216	15	15
+316	15	15
+416	15	15
+17	16	16
+117	16	16
+217	16	16
+317	16	16
+417	16	16
+FOUND_ROWS()
+445
+f0	f1	f2
+1	0	0
+101	0	0
+201	0	0
+301	0	0
+401	0	0
+2	1	1
+102	1	1
+202	1	1
+302	1	1
+402	1	1
+11	10	10
+111	10	10
+211	10	10
+311	10	10
+411	10	10
+12	11	11
+112	11	11
+212	11	11
+312	11	11
+412	11	11
+13	12	12
+113	12	12
+213	12	12
+313	12	12
+413	12	12
+14	13	13
+114	13	13
+214	13	13
+314	13	13
+414	13	13
+DROP PROCEDURE wl1393_sp_test|
+SELECT d1.f1, d1.f2 FROM t1
+LEFT JOIN (SELECT * FROM t1 ORDER BY f1 LIMIT 30) d1 on t1.f1=d1.f1
+ORDER BY d1.f2 DESC LIMIT 30;
+f1	f2
+5	5
+5	5
+5	5
+5	5
+5	5
+5	5
+5	5
+5	5
+5	5
+5	5
+5	5
+5	5
+5	5
+5	5
+5	5
+5	5
+5	5
+5	5
+5	5
+5	5
+5	5
+5	5
+5	5
+5	5
+5	5
+4	4
+4	4
+4	4
+4	4
+4	4
+SELECT * FROM t1 WHERE f1 = (SELECT f1 FROM t1 ORDER BY 1 LIMIT 1);
+f0	f1	f2
+1	0	0
+101	0	0
+201	0	0
+301	0	0
+401	0	0
+SELECT * FROM t1 WHERE f1 = (SELECT f1 FROM t1 ORDER BY 1 LIMIT 2);
+ERROR 21000: Subquery returns more than 1 row
+DROP TABLE t1, tmp;
+DROP VIEW v1, v2;
+# end of WL#1393 - Optimizing filesort with small limit
+#
+# Bug #58761
+# Crash in Field::is_null in field.h on subquery in WHERE clause
+#
+CREATE TABLE t1 (
+pk INT NOT NULL AUTO_INCREMENT,
+col_int_key INT DEFAULT NULL,
+col_varchar_key VARCHAR(1) DEFAULT NULL,
+PRIMARY KEY (pk),
+KEY col_varchar_key (col_varchar_key,col_int_key)
+);
+INSERT INTO t1 VALUES (27,7,'x');
+INSERT INTO t1 VALUES (28,6,'m');
+INSERT INTO t1 VALUES (29,4,'c');
+CREATE TABLE where_subselect
+SELECT DISTINCT `pk` AS field1 , `pk` AS field2 
+FROM t1 AS alias1 
+WHERE alias1 . `col_int_key` > 229 
+OR alias1 . `col_varchar_key` IS NOT NULL
+GROUP BY field1, field2
+;
+SELECT * 
+FROM where_subselect
+WHERE (field1, field2) IN (  
+SELECT DISTINCT `pk` AS field1 , `pk` AS field2 
+FROM t1 AS alias1 
+WHERE alias1 . `col_int_key` > 229 
+OR alias1 . `col_varchar_key` IS NOT NULL
+GROUP BY field1, field2
+);
+field1	field2
+27	27
+28	28
+29	29
+DROP TABLE t1;
+DROP TABLE where_subselect;
+# End of Bug #58761
 CREATE TABLE t1 (
 id1 INT NULL,
 id2 INT  NOT NULL,