diff options
| -rw-r--r-- | mysql-test/r/derived.result | 9 | ||||
| -rw-r--r-- | mysql-test/t/derived.test | 10 | ||||
| -rw-r--r-- | sql/sql_lex.cc | 5 | ||||
| -rw-r--r-- | sql/sql_select.cc | 2 |
4 files changed, 24 insertions, 2 deletions
diff --git a/mysql-test/r/derived.result b/mysql-test/r/derived.result index 7e6b9b44566..61d745d0236 100644 --- a/mysql-test/r/derived.result +++ b/mysql-test/r/derived.result @@ -330,3 +330,12 @@ SELECT MIN(price) min, MAX(price) max, AVG(price) avg FROM (SELECT SUBSTRING( MA min max avg 10.00 10.00 10 DROP TABLE t1; +create table t1 (a integer, b integer); +insert into t1 values (1,4), (2,2),(2,2), (4,1),(4,1),(4,1),(4,1); +select distinct sum(b) from t1 group by a; +sum(b) +4 +select distinct sum(b) from (select a,b from t1) y group by a; +sum(b) +4 +drop table t1; diff --git a/mysql-test/t/derived.test b/mysql-test/t/derived.test index 64e3fe8929b..8b322746ed6 100644 --- a/mysql-test/t/derived.test +++ b/mysql-test/t/derived.test @@ -214,3 +214,13 @@ CREATE TABLE `t1` ( `itemid` int(11) NOT NULL default '0', `grpid` varchar(15) N insert into t1 values (128, 'rozn', 2, now(), 10),(128, 'rozn', 1, now(), 10); SELECT MIN(price) min, MAX(price) max, AVG(price) avg FROM (SELECT SUBSTRING( MAX(concat(date_,";",price)), 12) price FROM t1 WHERE itemid=128 AND grpid='rozn' GROUP BY itemid, grpid, vendor) lastprices; DROP TABLE t1; + +# +# DISTINCT over grouped select on subquery in the FROM clause +# +create table t1 (a integer, b integer); +insert into t1 values (1,4), (2,2),(2,2), (4,1),(4,1),(4,1),(4,1); +select distinct sum(b) from t1 group by a; +select distinct sum(b) from (select a,b from t1) y group by a; +drop table t1; + diff --git a/sql/sql_lex.cc b/sql/sql_lex.cc index 2783406e16a..bba101f73b8 100644 --- a/sql/sql_lex.cc +++ b/sql/sql_lex.cc @@ -164,7 +164,10 @@ void lex_start(THD *thd, uchar *buf,uint length) void lex_end(LEX *lex) { - lex->select_lex.expr_list.delete_elements(); // If error when parsing sql-varargs + for (SELECT_LEX *sl= lex->all_selects_list; + sl; + sl= sl->next_select_in_list()) + sl->expr_list.delete_elements(); // If error when parsing sql-varargs x_free(lex->yacc_yyss); x_free(lex->yacc_yyvs); } diff --git a/sql/sql_select.cc b/sql/sql_select.cc index aea7cb9ed6d..b2fb7ec0275 100644 --- a/sql/sql_select.cc +++ b/sql/sql_select.cc @@ -1304,7 +1304,7 @@ JOIN::exec() curr_join->select_distinct=0; /* Each row is unique */ curr_join->join_free(0); /* Free quick selects */ - if (select_distinct && ! group_list) + if (curr_join->select_distinct && ! curr_join->group_list) { thd->proc_info="Removing duplicates"; if (curr_join->tmp_having) |