Commit f4266bc4 authored by unknown's avatar unknown
Browse files

Merge rurik.mysql.com:/home/igor/mysql-5.0 

into  rurik.mysql.com:/home/igor/dev/mysql-5.0-0
parents a1d55c5d ac21d029

mysql-test/r/having.result

+17 −0
Original line number Diff line number Diff line
@@ -141,6 +141,23 @@ SUM(a) 
6

4

DROP TABLE t1;

CREATE TABLE t1 (a int);

INSERT INTO t1 VALUES (1), (2), (1), (3), (2), (1);

SELECT a FROM t1 GROUP BY a HAVING a > 1;

a

2

3

SELECT a FROM t1 GROUP BY a HAVING 1 != 1 AND a > 1;

a

SELECT 0 AS x, a FROM t1 GROUP BY x,a HAVING x=1 AND a > 1;

x	a

EXPLAIN SELECT a FROM t1 GROUP BY a HAVING 1 != 1 AND a > 1;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible HAVING

EXPLAIN SELECT 0 AS x, a FROM t1 GROUP BY x,a HAVING x=1 AND a > 1;

id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra

1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible HAVING

DROP table t1;

create table t1 (col1 int, col2 varchar(5), col_t1 int);

create table t2 (col1 int, col2 varchar(5), col_t2 int);

create table t3 (col1 int, col2 varchar(5), col_t3 int);

mysql-test/t/having.test

+16 −0
Original line number Diff line number Diff line
@@ -135,6 +135,22 @@ SELECT SUM(a) FROM t1 GROUP BY a HAVING SUM(a); 


DROP TABLE t1;



#

# Bug #14927: HAVING clause containing constant false conjunct

#



CREATE TABLE t1 (a int);

INSERT INTO t1 VALUES (1), (2), (1), (3), (2), (1);



SELECT a FROM t1 GROUP BY a HAVING a > 1;

SELECT a FROM t1 GROUP BY a HAVING 1 != 1 AND a > 1;

SELECT 0 AS x, a FROM t1 GROUP BY x,a HAVING x=1 AND a > 1;



EXPLAIN SELECT a FROM t1 GROUP BY a HAVING 1 != 1 AND a > 1;

EXPLAIN SELECT 0 AS x, a FROM t1 GROUP BY x,a HAVING x=1 AND a > 1;



DROP table t1;  



# End of 4.1 tests



#

sql/sql_lex.cc

+1 −1
Original line number Diff line number Diff line
@@ -1122,7 +1122,7 @@ void st_select_lex::init_query() 
  embedding= leaf_tables= 0;

  item_list.empty();

  join= 0;

  having= where= prep_where= 0;

  having= prep_having= where= prep_where= 0;

  olap= UNSPECIFIED_OLAP_TYPE;

  having_fix_field= 0;

  context.select_lex= this;

sql/sql_lex.h

+1 −0
Original line number Diff line number Diff line
@@ -474,6 +474,7 @@ class st_select_lex: public st_select_lex_node 
  char *db;

  Item *where, *having;                         /* WHERE & HAVING clauses */

  Item *prep_where; /* saved WHERE clause for prepared statement processing */

  Item *prep_having;/* saved HAVING clause for prepared statement processing */

  /* point on lex in which it was created, used in view subquery detection */

  st_lex *parent_lex;

  enum olap_type olap;

sql/sql_prepare.cc

+12 −7
Original line number Diff line number Diff line
@@ -2066,13 +2066,18 @@ void reinit_stmt_before_use(THD *thd, LEX *lex) 
      sl->exclude_from_table_unique_test= FALSE;



      /*

        Copy WHERE clause pointers to avoid damaging they by optimisation

        Copy WHERE, HAVING clause pointers to avoid damaging them by optimisation

      */

     if (sl->prep_where)

     {

       sl->where= sl->prep_where->copy_andor_structure(thd);

       sl->where->cleanup();

     }

     if (sl->prep_having)

     {

       sl->having= sl->prep_having->copy_andor_structure(thd);

       sl->having->cleanup();

     }

     DBUG_ASSERT(sl->join == 0);

      ORDER *order;

      /* Fix GROUP list */