Commit 3e2988d0 authored by unknown's avatar unknown
Browse files

Fixes to merge from 4.1 


client/mysqldump.c:
  Temporarily disable unused (and broken) code.
mysql-test/r/group_min_max.result:
  Update results
mysql-test/r/mysqldump.result:
  Update results
mysql-test/r/subselect.result:
  Update results
mysql-test/t/group_min_max.test:
  Ignore number of rows in output of most explain results
sql/sql_insert.cc:
  Fix reference to max_unique_length
parent 2de8a4bc

client/mysqldump.c

+3 −0
Original line number Diff line number Diff line
@@ -2694,8 +2694,11 @@ static my_bool get_view_structure(char *table, char* db) 
  if (verbose)

    fprintf(stderr, "-- Retrieving view structure for table %s...\n", table);



#ifdef NOT_REALLY_USED_YET

  sprintf(insert_pat,"SET OPTION SQL_QUOTE_SHOW_CREATE=%d",

	  (opt_quoted || opt_keywords));

#endif



  result_table=     quote_name(table, table_buff, 1);

  opt_quoted_table= quote_name(table, table_buff2, 0);

mysql-test/r/group_min_max.result

+49 −47
Original line number Diff line number Diff line
@@ -148,7 +148,7 @@ id select_type table type possible_keys key key_len ref rows Extra 
1	SIMPLE	t1	range	NULL	idx_t1_1	147	NULL	17	Using index for group-by

explain select a1,a2,b,max(c),min(c) from t2 group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	NULL	idx_t2_1	#	NULL	21	Using index for group-by

1	SIMPLE	t2	range	NULL	idx_t2_1	146	NULL	#	Using index for group-by

explain select min(a2), a1, max(a2), min(a2), a1 from t1 group by a1;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	range	NULL	idx_t1_1	65	NULL	5	Using index for group-by
@@ -320,40 +320,40 @@ id select_type table type possible_keys key key_len ref rows Extra 
1	SIMPLE	t1	range	idx_t1_0,idx_t1_1,idx_t1_2	idx_t1_1	147	NULL	14	Using where; Using index for group-by

explain select a1,a2,b,       max(c) from t2 where a1 < 'd' group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	idx_t2_0,idx_t2_1,idx_t2_2	idx_t2_1	146	NULL	14	Using where; Using index for group-by

1	SIMPLE	t2	range	idx_t2_0,idx_t2_1,idx_t2_2	idx_t2_1	146	NULL	#	Using where; Using index for group-by

explain select a1,a2,b,min(c),max(c) from t2 where a1 < 'd' group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	idx_t2_0,idx_t2_1,idx_t2_2	idx_t2_1	163	NULL	14	Using where; Using index for group-by

1	SIMPLE	t2	range	idx_t2_0,idx_t2_1,idx_t2_2	idx_t2_1	163	NULL	#	Using where; Using index for group-by

explain select a1,a2,b,min(c),max(c) from t2 where a1 >= 'b' group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	idx_t2_0,idx_t2_1,idx_t2_2	idx_t2_1	163	NULL	16	Using where; Using index for group-by

1	SIMPLE	t2	range	idx_t2_0,idx_t2_1,idx_t2_2	idx_t2_1	163	NULL	#	Using where; Using index for group-by

explain select a1,a2,b,       max(c) from t2 where a1 >= 'c' or a1 < 'b' group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	idx_t2_0,idx_t2_1,idx_t2_2	idx_t2_1	146	NULL	17	Using where; Using index for group-by

1	SIMPLE	t2	range	idx_t2_0,idx_t2_1,idx_t2_2	idx_t2_1	146	NULL	#	Using where; Using index for group-by

explain select a1, max(c)            from t2 where a1 >= 'c' or a1 < 'b' group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	idx_t2_0,idx_t2_1,idx_t2_2	idx_t2_1	146	NULL	17	Using where; Using index for group-by

1	SIMPLE	t2	range	idx_t2_0,idx_t2_1,idx_t2_2	idx_t2_1	146	NULL	#	Using where; Using index for group-by

explain select a1,a2,b,min(c),max(c) from t2 where a1 >= 'c' or a2 < 'b' group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	idx_t2_0,idx_t2_1,idx_t2_2	idx_t2_1	163	NULL	21	Using where; Using index for group-by

1	SIMPLE	t2	range	idx_t2_0,idx_t2_1,idx_t2_2	idx_t2_1	163	NULL	#	Using where; Using index for group-by

explain select a1,a2,b,       max(c) from t2 where a1 = 'z' or a1 = 'b' or a1 = 'd' group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	idx_t2_0,idx_t2_1,idx_t2_2	idx_t2_1	146	NULL	9	Using where; Using index for group-by

1	SIMPLE	t2	range	idx_t2_0,idx_t2_1,idx_t2_2	idx_t2_1	146	NULL	#	Using where; Using index for group-by

explain select a1,a2,b,min(c),max(c) from t2 where a1 = 'z' or a1 = 'b' or a1 = 'd' group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	idx_t2_0,idx_t2_1,idx_t2_2	idx_t2_1	163	NULL	9	Using where; Using index for group-by

1	SIMPLE	t2	range	idx_t2_0,idx_t2_1,idx_t2_2	idx_t2_1	163	NULL	#	Using where; Using index for group-by

explain select a1,a2,b,       max(c) from t2 where (a1 = 'b' or a1 = 'd' or a1 = 'a' or a1 = 'c') and (a2 > 'a') group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	idx_t2_0,idx_t2_1,idx_t2_2	idx_t2_1	146	NULL	9	Using where; Using index for group-by

1	SIMPLE	t2	range	idx_t2_0,idx_t2_1,idx_t2_2	idx_t2_1	146	NULL	#	Using where; Using index for group-by

explain select a1,a2,b,min(c),max(c) from t2 where (a1 = 'b' or a1 = 'd' or a1 = 'a' or a1 = 'c') and (a2 > 'a') group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	idx_t2_0,idx_t2_1,idx_t2_2	idx_t2_1	163	NULL	9	Using where; Using index for group-by

1	SIMPLE	t2	range	idx_t2_0,idx_t2_1,idx_t2_2	idx_t2_1	163	NULL	#	Using where; Using index for group-by

explain select a1,min(c),max(c)      from t2 where a1 >= 'b' group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	idx_t2_0,idx_t2_1,idx_t2_2	idx_t2_1	163	NULL	16	Using where; Using index for group-by

1	SIMPLE	t2	range	idx_t2_0,idx_t2_1,idx_t2_2	idx_t2_1	163	NULL	#	Using where; Using index for group-by

explain select a1,  max(c)           from t2 where a1 in ('a','b','d') group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	idx_t2_0,idx_t2_1,idx_t2_2	idx_t2_1	146	NULL	14	Using where; Using index for group-by

1	SIMPLE	t2	range	idx_t2_0,idx_t2_1,idx_t2_2	idx_t2_1	146	NULL	#	Using where; Using index for group-by

select a1,a2,b,min(c),max(c) from t1 where a1 < 'd' group by a1,a2,b;

a1	a2	b	min(c)	max(c)

a	a	a	a111	d111
@@ -846,7 +846,7 @@ a a NULL a777 a999 
c	a	NULL	c777	c999

explain select a1,a2,b,       max(c) from t1 where (c > 'b1') group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	range	NULL	idx_t1_1	147	NULL	17	Using where; Using index for group-by

1	SIMPLE	t1	range	NULL	idx_t1_1	147	NULL	#	Using where; Using index for group-by

explain select a1,a2,b,min(c),max(c) from t1 where (c > 'b1') group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t1	range	NULL	idx_t1_1	163	NULL	17	Using where; Using index for group-by
@@ -894,49 +894,49 @@ id select_type table type possible_keys key key_len ref rows Extra 
1	SIMPLE	t1	range	NULL	idx_t1_1	163	NULL	17	Using where; Using index for group-by

explain select a1,a2,b,       max(c) from t2 where (c > 'b1') group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	NULL	idx_t2_1	146	NULL	21	Using where; Using index for group-by

1	SIMPLE	t2	range	NULL	idx_t2_1	146	NULL	#	Using where; Using index for group-by

explain select a1,a2,b,min(c),max(c) from t2 where (c > 'b1') group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	NULL	idx_t2_1	163	NULL	21	Using where; Using index for group-by

1	SIMPLE	t2	range	NULL	idx_t2_1	163	NULL	#	Using where; Using index for group-by

explain select a1,a2,b,       max(c) from t2 where (c > 'f123') group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	NULL	idx_t2_1	146	NULL	21	Using where; Using index for group-by

1	SIMPLE	t2	range	NULL	idx_t2_1	146	NULL	#	Using where; Using index for group-by

explain select a1,a2,b,min(c),max(c) from t2 where (c > 'f123') group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	NULL	idx_t2_1	163	NULL	21	Using where; Using index for group-by

1	SIMPLE	t2	range	NULL	idx_t2_1	163	NULL	#	Using where; Using index for group-by

explain select a1,a2,b,       max(c) from t2 where (c < 'a0') group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	NULL	idx_t2_1	163	NULL	21	Using where; Using index for group-by

1	SIMPLE	t2	range	NULL	idx_t2_1	163	NULL	#	Using where; Using index for group-by

explain select a1,a2,b,min(c),max(c) from t2 where (c < 'a0') group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	NULL	idx_t2_1	163	NULL	21	Using where; Using index for group-by

1	SIMPLE	t2	range	NULL	idx_t2_1	163	NULL	#	Using where; Using index for group-by

explain select a1,a2,b,       max(c) from t2 where (c < 'k321') group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	NULL	idx_t2_1	163	NULL	21	Using where; Using index for group-by

1	SIMPLE	t2	range	NULL	idx_t2_1	163	NULL	#	Using where; Using index for group-by

explain select a1,a2,b,min(c),max(c) from t2 where (c < 'k321') group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	NULL	idx_t2_1	163	NULL	21	Using where; Using index for group-by

1	SIMPLE	t2	range	NULL	idx_t2_1	163	NULL	#	Using where; Using index for group-by

explain select a1,a2,b,       max(c) from t2 where (c < 'a0') or (c > 'b1') group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	NULL	idx_t2_1	163	NULL	21	Using where; Using index for group-by

1	SIMPLE	t2	range	NULL	idx_t2_1	163	NULL	#	Using where; Using index for group-by

explain select a1,a2,b,min(c),max(c) from t2 where (c < 'a0') or (c > 'b1') group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	NULL	idx_t2_1	163	NULL	21	Using where; Using index for group-by

1	SIMPLE	t2	range	NULL	idx_t2_1	163	NULL	#	Using where; Using index for group-by

explain select a1,a2,b,       max(c) from t2 where (c > 'b1') or (c <= 'g1') group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	NULL	idx_t2_1	146	NULL	21	Using where; Using index for group-by

1	SIMPLE	t2	range	NULL	idx_t2_1	146	NULL	#	Using where; Using index for group-by

explain select a1,a2,b,min(c),max(c) from t2 where (c > 'b1') or (c <= 'g1') group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	NULL	idx_t2_1	163	NULL	21	Using where; Using index for group-by

1	SIMPLE	t2	range	NULL	idx_t2_1	163	NULL	#	Using where; Using index for group-by

explain select a1,a2,b,min(c),max(c) from t2 where (c > 'b111') and (c <= 'g112') group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	NULL	idx_t2_1	163	NULL	21	Using where; Using index for group-by

1	SIMPLE	t2	range	NULL	idx_t2_1	163	NULL	#	Using where; Using index for group-by

explain select a1,a2,b,min(c),max(c) from t2 where (c < 'c5') or (c = 'g412') or (c = 'k421') group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	NULL	idx_t2_1	163	NULL	21	Using where; Using index for group-by

1	SIMPLE	t2	range	NULL	idx_t2_1	163	NULL	#	Using where; Using index for group-by

explain select a1,a2,b,min(c),max(c) from t2 where ((c > 'b111') and (c <= 'g112')) or ((c > 'd000') and (c <= 'i110')) group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	NULL	idx_t2_1	163	NULL	21	Using where; Using index for group-by

1	SIMPLE	t2	range	NULL	idx_t2_1	163	NULL	#	Using where; Using index for group-by

select a1,a2,b,       max(c) from t1 where (c > 'b1') group by a1,a2,b;

a1	a2	b	max(c)

a	a	a	d111
@@ -1389,22 +1389,22 @@ id select_type table type possible_keys key key_len ref rows Extra 
1	SIMPLE	t1	range	NULL	idx_t1_1	147	NULL	17	Using where; Using index for group-by

explain select a1,a2,b,min(c),max(c) from t2 where (a1 >= 'c' or a2 < 'b') and (b > 'a') group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	idx_t2_0,idx_t2_1,idx_t2_2	idx_t2_1	163	NULL	21	Using where; Using index for group-by

1	SIMPLE	t2	range	idx_t2_0,idx_t2_1,idx_t2_2	idx_t2_1	163	NULL	#	Using where; Using index for group-by

explain select a1,a2,b,min(c),max(c) from t2 where (a1 >= 'c' or a2 < 'b') and (c > 'b111') group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	idx_t2_0,idx_t2_1,idx_t2_2	idx_t2_1	163	NULL	21	Using where; Using index for group-by

1	SIMPLE	t2	range	idx_t2_0,idx_t2_1,idx_t2_2	idx_t2_1	163	NULL	#	Using where; Using index for group-by

explain select a1,a2,b,min(c),max(c) from t2 where (a2 >= 'b') and (b = 'a') and (c > 'b111') group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	NULL	idx_t2_1	163	NULL	21	Using where; Using index for group-by

1	SIMPLE	t2	range	NULL	idx_t2_1	163	NULL	#	Using where; Using index for group-by

explain select a1,a2,b,min(c) from t2 where ((a1 > 'a') or (a1 < '9'))  and ((a2 >= 'b') and (a2 < 'z')) and (b = 'a') and ((c < 'h112') or (c = 'j121') or (c > 'k121' and c < 'm122') or (c > 'o122')) group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	idx_t2_0,idx_t2_1,idx_t2_2	idx_t2_1	163	NULL	16	Using where; Using index for group-by

1	SIMPLE	t2	range	idx_t2_0,idx_t2_1,idx_t2_2	idx_t2_1	163	NULL	#	Using where; Using index for group-by

explain select a1,a2,b,min(c) from t2 where ((a1 > 'a') or (a1 < '9'))  and ((a2 >= 'b') and (a2 < 'z')) and (b = 'a') and ((c = 'j121') or (c > 'k121' and c < 'm122') or (c > 'o122') or (c < 'h112') or (c = 'c111')) group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	idx_t2_0,idx_t2_1,idx_t2_2	idx_t2_1	163	NULL	16	Using where; Using index for group-by

1	SIMPLE	t2	range	idx_t2_0,idx_t2_1,idx_t2_2	idx_t2_1	163	NULL	#	Using where; Using index for group-by

explain select a1,a2,b,min(c) from t2 where (a1 > 'a') and (a2 > 'a') and (b = 'c') group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	idx_t2_0,idx_t2_1,idx_t2_2	idx_t2_1	146	NULL	16	Using where; Using index for group-by

1	SIMPLE	t2	range	idx_t2_0,idx_t2_1,idx_t2_2	idx_t2_1	146	NULL	#	Using where; Using index for group-by

select a1,a2,b,min(c),max(c) from t1 where (a1 >= 'c' or a2 < 'b') and (b > 'a') group by a1,a2,b;

a1	a2	b	min(c)	max(c)

a	a	b	e112	h112
@@ -1503,16 +1503,16 @@ id select_type table type possible_keys key key_len ref rows Extra 
1	SIMPLE	t1	range	idx_t1_0,idx_t1_1,idx_t1_2	idx_t1_1	147	NULL	14	Using where; Using index for group-by

explain select a1,a2,b from t2 where (a1 >= 'c' or a2 < 'b') and (b > 'a') group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	idx_t2_0,idx_t2_1,idx_t2_2	idx_t2_1	146	NULL	21	Using where; Using index for group-by

1	SIMPLE	t2	range	idx_t2_0,idx_t2_1,idx_t2_2	idx_t2_1	146	NULL	#	Using where; Using index for group-by

explain select a1,a2,b from t2 where (a2 >= 'b') and (b = 'a') group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	NULL	idx_t2_1	146	NULL	21	Using where; Using index for group-by

1	SIMPLE	t2	range	NULL	idx_t2_1	146	NULL	#	Using where; Using index for group-by

explain select a1,a2,b,c from t2 where (a2 >= 'b') and (b = 'a') and (c = 'i121') group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	NULL	idx_t2_1	163	NULL	21	Using where; Using index for group-by

1	SIMPLE	t2	index	NULL	idx_t2_1	163	NULL	#	Using where; Using index

explain select a1,a2,b from t2 where (a1 > 'a') and (a2 > 'a') and (b = 'c') group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	idx_t2_0,idx_t2_1,idx_t2_2	idx_t2_1	146	NULL	16	Using where; Using index for group-by

1	SIMPLE	t2	range	idx_t2_0,idx_t2_1,idx_t2_2	idx_t2_1	146	NULL	#	Using where; Using index for group-by

select a1,a2,b from t1 where (a1 >= 'c' or a2 < 'b') and (b > 'a') group by a1,a2,b;

a1	a2	b

a	a	b
@@ -1549,6 +1549,7 @@ c b a 
d	b	a

select a1,a2,b,c from t2 where (a2 >= 'b') and (b = 'a') and (c = 'i121') group by a1,a2,b;

a1	a2	b	c

a	b	a	i121

select a1,a2,b from t2 where (a1 > 'a') and (a2 > 'a') and (b = 'c') group by a1,a2,b;

a1	a2	b

explain select distinct a1,a2,b from t1;
@@ -1568,16 +1569,16 @@ id select_type table type possible_keys key key_len ref rows Extra 
1	SIMPLE	t1	index	NULL	idx_t1_2	147	NULL	128	Using where; Using index

explain select distinct a1,a2,b from t2;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	NULL	idx_t2_1	146	NULL	21	Using index for group-by

1	SIMPLE	t2	range	NULL	idx_t2_1	146	NULL	#	Using index for group-by

explain select distinct a1,a2,b from t2 where (a2 >= 'b') and (b = 'a');

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	NULL	idx_t2_1	146	NULL	21	Using where; Using index for group-by

1	SIMPLE	t2	range	NULL	idx_t2_1	146	NULL	#	Using where; Using index for group-by

explain select distinct a1,a2,b,c from t2 where (a2 >= 'b') and (b = 'a') and (c = 'i121');

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	index	NULL	idx_t2_1	163	NULL	164	Using where; Using index

explain select distinct a1,a2,b from t2 where (a1 > 'a') and (a2 > 'a') and (b = 'c');

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	idx_t2_0,idx_t2_1,idx_t2_2	idx_t2_1	146	NULL	16	Using where; Using index for group-by

1	SIMPLE	t2	range	idx_t2_0,idx_t2_1,idx_t2_2	idx_t2_1	146	NULL	#	Using where; Using index for group-by

explain select distinct b from t2 where (a2 >= 'b') and (b = 'a');

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	index	NULL	idx_t2_2	146	NULL	164	Using where; Using index
@@ -1712,19 +1713,19 @@ id select_type table type possible_keys key key_len ref rows Extra 
1	SIMPLE	t1	range	NULL	idx_t1_1	147	NULL	17	Using where; Using index for group-by; Using temporary; Using filesort

explain select distinct a1,a2,b from t2;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	NULL	idx_t2_1	146	NULL	21	Using index for group-by

1	SIMPLE	t2	range	NULL	idx_t2_1	146	NULL	#	Using index for group-by

explain select distinct a1,a2,b from t2 where (a2 >= 'b') and (b = 'a') group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	NULL	idx_t2_1	146	NULL	21	Using where; Using index for group-by

1	SIMPLE	t2	range	NULL	idx_t2_1	146	NULL	#	Using where; Using index for group-by

explain select distinct a1,a2,b,c from t2 where (a2 >= 'b') and (b = 'a') and (c = 'i121') group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	NULL	idx_t2_1	163	NULL	21	Using where; Using index for group-by

1	SIMPLE	t2	index	NULL	idx_t2_1	163	NULL	#	Using where; Using index

explain select distinct a1,a2,b from t2 where (a1 > 'a') and (a2 > 'a') and (b = 'c') group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	idx_t2_0,idx_t2_1,idx_t2_2	idx_t2_1	146	NULL	16	Using where; Using index for group-by

1	SIMPLE	t2	range	idx_t2_0,idx_t2_1,idx_t2_2	idx_t2_1	146	NULL	#	Using where; Using index for group-by

explain select distinct b from t2 where (a2 >= 'b') and (b = 'a') group by a1,a2,b;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	t2	range	NULL	idx_t2_1	146	NULL	21	Using where; Using index for group-by; Using temporary; Using filesort

1	SIMPLE	t2	range	NULL	idx_t2_1	146	NULL	#	Using where; Using index for group-by; Using temporary; Using filesort

select distinct a1,a2,b from t1;

a1	a2	b

a	a	a
@@ -1787,6 +1788,7 @@ c b a 
d	b	a

select distinct a1,a2,b,c from t2 where (a2 >= 'b') and (b = 'a') and (c = 'i121') group by a1,a2,b;

a1	a2	b	c

a	b	a	i121

select distinct a1,a2,b from t2 where (a1 > 'a') and (a2 > 'a') and (b = 'c') group by a1,a2,b;

a1	a2	b

select distinct b from t2 where (a2 >= 'b') and (b = 'a') group by a1,a2,b;

mysql-test/r/mysqldump.result

+691 −0

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mysql-test/r/subselect.result

+0 −2
Original line number Diff line number Diff line
@@ -2781,8 +2781,6 @@ c1 c2 
2	NULL

3	NULL

DROP TABLE t1,t2,t3;

drop table t1

#;

CREATE TABLE `t1` (

`itemid` bigint(20) unsigned NOT NULL auto_increment,

`sessionid` bigint(20) unsigned default NULL,

mysql-test/t/group_min_max.test

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