diff --git a/mysql-test/r/func_gconcat.result b/mysql-test/r/func_gconcat.result index 2c79b8f8ab1..db0125b7d4f 100644 --- a/mysql-test/r/func_gconcat.result +++ b/mysql-test/r/func_gconcat.result @@ -559,14 +559,14 @@ COUNT(*) GROUP_CONCAT(DISTINCT t2.somename SEPARATOR ' |') DROP TABLE t1,t2; select * from (select group_concat('c') from DUAL) t; group_concat('c') -NULL +c create table t1 ( a int not null default 0); select * from (select group_concat(a) from t1) t2; group_concat(a) NULL select group_concat('x') UNION ALL select 1; group_concat('x') -NULL +x 1 drop table t1; CREATE TABLE t1 (id int, a varchar(9)); diff --git a/mysql-test/r/func_group.result b/mysql-test/r/func_group.result index 932ef133087..04f6ebe6398 100644 --- a/mysql-test/r/func_group.result +++ b/mysql-test/r/func_group.result @@ -794,7 +794,7 @@ min(7) NULL select min(7) from DUAL; min(7) -NULL +7 explain select min(7) from t2m join t1m; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Select tables optimized away @@ -809,7 +809,7 @@ max(7) NULL select max(7) from DUAL; max(7) -NULL +7 explain select max(7) from t2m join t1m; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Select tables optimized away @@ -848,7 +848,7 @@ min(7) NULL select min(7) from DUAL; min(7) -NULL +7 explain select min(7) from t2i join t1i; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2i ALL NULL NULL NULL NULL 1 @@ -864,7 +864,7 @@ max(7) NULL select max(7) from DUAL; max(7) -NULL +7 explain select max(7) from t2i join t1i; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2i ALL NULL NULL NULL NULL 1 @@ -942,3 +942,19 @@ EXPLAIN SELECT MAX(b) FROM t1; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 2 DROP TABLE t1; +CREATE TABLE t1 (a INT, b INT); +INSERT INTO t1 VALUES (1,1),(1,2),(2,3); +SELECT (SELECT COUNT(DISTINCT t1.b)) FROM t1 GROUP BY t1.a; +(SELECT COUNT(DISTINCT t1.b)) +1 +1 +SELECT (SELECT COUNT(DISTINCT 12)) FROM t1 GROUP BY t1.a; +(SELECT COUNT(DISTINCT 12)) +1 +1 +SELECT AVG(2), BIT_AND(2), BIT_OR(2), BIT_XOR(2), COUNT(*), COUNT(12), +COUNT(DISTINCT 12), MIN(2),MAX(2),STD(2), VARIANCE(2),SUM(2), +GROUP_CONCAT(2),GROUP_CONCAT(DISTINCT 2); +AVG(2) BIT_AND(2) BIT_OR(2) BIT_XOR(2) COUNT(*) COUNT(12) COUNT(DISTINCT 12) MIN(2) MAX(2) STD(2) VARIANCE(2) SUM(2) GROUP_CONCAT(2) GROUP_CONCAT(DISTINCT 2) +2.0000 2 2 2 1 1 1 2 2 0.0000 0.0000 2 2 2 +DROP TABLE t1; diff --git a/mysql-test/r/subselect.result b/mysql-test/r/subselect.result index 983ad628425..e6b86980fbb 100644 --- a/mysql-test/r/subselect.result +++ b/mysql-test/r/subselect.result @@ -1001,7 +1001,7 @@ INSERT INTO t1 VALUES (1); UPDATE t1 SET i=i+1 WHERE i=(SELECT MAX(i)); select * from t1; i -1 +2 drop table t1; CREATE TABLE t1 (a int(1)); EXPLAIN EXTENDED SELECT (SELECT RAND() FROM t1) FROM t1; @@ -1193,7 +1193,7 @@ UPDATE t1 SET t.i=i+(SELECT MAX(i) FROM (SELECT 1) t); ERROR 42S02: Unknown table 't' in field list select * from t1; i -1 +3 drop table t1; CREATE TABLE t1 ( id int(11) default NULL diff --git a/mysql-test/t/func_group.test b/mysql-test/t/func_group.test index f8a3ed0f25e..18cb5d0a430 100644 --- a/mysql-test/t/func_group.test +++ b/mysql-test/t/func_group.test @@ -617,4 +617,18 @@ SELECT MAX(b) FROM t1; EXPLAIN SELECT MAX(b) FROM t1; DROP TABLE t1; +# +# Bug #16792 query with subselect, join, and group not returning proper values +# +CREATE TABLE t1 (a INT, b INT); +INSERT INTO t1 VALUES (1,1),(1,2),(2,3); + +SELECT (SELECT COUNT(DISTINCT t1.b)) FROM t1 GROUP BY t1.a; +SELECT (SELECT COUNT(DISTINCT 12)) FROM t1 GROUP BY t1.a; +# an attempt to test all aggregate function with no table. +SELECT AVG(2), BIT_AND(2), BIT_OR(2), BIT_XOR(2), COUNT(*), COUNT(12), + COUNT(DISTINCT 12), MIN(2),MAX(2),STD(2), VARIANCE(2),SUM(2), + GROUP_CONCAT(2),GROUP_CONCAT(DISTINCT 2); +DROP TABLE t1; + # End of 4.1 tests diff --git a/sql/opt_sum.cc b/sql/opt_sum.cc index b53fbfd3f80..bc98c96b5a8 100644 --- a/sql/opt_sum.cc +++ b/sql/opt_sum.cc @@ -182,7 +182,7 @@ int opt_sum_query(TABLE_LIST *tables, List &all_fields,COND *conds) Type of range for the key part for this field will be returned in range_fl. */ - if ((outer_tables & table->map) || + if (table->file->inited || (outer_tables & table->map) || !find_key_for_maxmin(0, &ref, item_field->field, conds, &range_fl, &prefix_len)) { @@ -269,7 +269,7 @@ int opt_sum_query(TABLE_LIST *tables, List &all_fields,COND *conds) Type of range for the key part for this field will be returned in range_fl. */ - if ((outer_tables & table->map) || + if (table->file->inited || (outer_tables & table->map) || !find_key_for_maxmin(1, &ref, item_field->field, conds, &range_fl, &prefix_len)) { diff --git a/sql/sql_select.cc b/sql/sql_select.cc index 605ef49bb07..6a3b9fe54cf 100644 --- a/sql/sql_select.cc +++ b/sql/sql_select.cc @@ -1131,7 +1131,7 @@ JOIN::exec() DBUG_VOID_RETURN; } - if (!tables_list) + if (!tables_list && (tables || !select_lex->with_sum_func)) { // Only test of functions if (select_options & SELECT_DESCRIBE) select_describe(this, FALSE, FALSE, FALSE, @@ -1170,7 +1170,12 @@ JOIN::exec() thd->examined_row_count= 0; DBUG_VOID_RETURN; } - thd->limit_found_rows= thd->examined_row_count= 0; + /* + don't reset the found rows count if there're no tables + as FOUND_ROWS() may be called. + */ + if (tables) + thd->limit_found_rows= thd->examined_row_count= 0; if (zero_result_cause) { @@ -1209,7 +1214,8 @@ JOIN::exec() having= tmp_having; select_describe(this, need_tmp, order != 0 && !skip_sort_order, - select_distinct); + select_distinct, + !tables ? "No tables used" : NullS); DBUG_VOID_RETURN; } @@ -6028,9 +6034,12 @@ do_select(JOIN *join,List *fields,TABLE *table,Procedure *procedure) else end_select=end_send; } - join->join_tab[join->tables-1].next_select=end_select; + if (join->tables) + { + join->join_tab[join->tables-1].next_select=end_select; - join_tab=join->join_tab+join->const_tables; + join_tab=join->join_tab+join->const_tables; + } join->send_records=0; if (join->tables == join->const_tables) { @@ -6048,6 +6057,7 @@ do_select(JOIN *join,List *fields,TABLE *table,Procedure *procedure) } else { + DBUG_ASSERT(join_tab); error= sub_select(join,join_tab,0); if (error >= 0) error= sub_select(join,join_tab,1);