Commit 4254ab9d authored by unknown's avatar unknown
Browse files

Merge mysql.com:/home/wax/mysql/mysql-4.1 

into mysql.com:/home/wax/mysql/mysql-4.1group_concat
parents cffa34d9 02b810d2

mysql-test/r/func_gconcat.result

+30 −0
Original line number Diff line number Diff line
@@ -321,3 +321,33 @@ HAVING LEFT(names, 1) ='J'; 
names

John###Anna###Bill

DROP TABLE t1;

CREATE TABLE t1 ( a int, b TEXT );

INSERT INTO t1 VALUES (1,'First Row'), (2,'Second Row');

SELECT GROUP_CONCAT(b ORDER BY b) FROM t1 GROUP BY a;

GROUP_CONCAT(b ORDER BY b)

First Row

Second Row

DROP TABLE t1;

CREATE TABLE t1 (a_id tinyint(4) NOT NULL default '0', PRIMARY KEY  (a_id)) ENGINE=InnoDB DEFAULT CHARSET=latin1;

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

CREATE TABLE t2 (b_id tinyint(4) NOT NULL default '0',b_a tinyint(4) NOT NULL default '0', PRIMARY KEY  (b_id), KEY  (b_a), 

CONSTRAINT fk_b_a FOREIGN KEY (b_a) REFERENCES t1 (a_id) ON DELETE CASCADE ON UPDATE NO ACTION) ENGINE=InnoDB DEFAULT CHARSET=latin1;

INSERT INTO t2 VALUES (1,1),(2,1),(3,1),(4,2),(5,2);

SELECT * FROM (SELECT t1.*,GROUP_CONCAT(t2.b_id SEPARATOR ',') as b_list FROM (t1 LEFT JOIN (t2) on t1.a_id = t2.b_a) GROUP BY t1.a_id ) AS xyz;

a_id	b_list

1	1,2,3

2	4,5

3	NULL

DROP TABLE t2;

DROP TABLE t1;

CREATE TABLE t1 (A_ID INT NOT NULL,A_DESC CHAR(3) NOT NULL,PRIMARY KEY (A_ID));

INSERT INTO t1 VALUES (1,'ABC'), (2,'EFG'), (3,'HIJ');

CREATE TABLE t2 (A_ID INT NOT NULL,B_DESC CHAR(3) NOT NULL,PRIMARY KEY (A_ID,B_DESC));

INSERT INTO t2 VALUES (1,'A'),(1,'B'),(3,'F');

SELECT t1.A_ID, GROUP_CONCAT(t2.B_DESC) AS B_DESC FROM t1 LEFT JOIN t2 ON t1.A_ID=t2.A_ID GROUP BY t1.A_ID ORDER BY t1.A_DESC;

A_ID	B_DESC

1	A,B

2	NULL

3	F

DROP TABLE t1;

DROP TABLE t2;

mysql-test/t/func_gconcat.test

+35 −0
Original line number Diff line number Diff line
@@ -201,3 +201,38 @@ SELECT GROUP_CONCAT(a SEPARATOR '||') AS names FROM t1 
SELECT GROUP_CONCAT(a SEPARATOR '###') AS names FROM t1 

  HAVING LEFT(names, 1) ='J';

DROP TABLE t1;



#

# check blobs

#



CREATE TABLE t1 ( a int, b TEXT );

INSERT INTO t1 VALUES (1,'First Row'), (2,'Second Row');

SELECT GROUP_CONCAT(b ORDER BY b) FROM t1 GROUP BY a;

DROP TABLE t1;



#

# check null values #1

#



CREATE TABLE t1 (a_id tinyint(4) NOT NULL default '0', PRIMARY KEY  (a_id)) ENGINE=InnoDB DEFAULT CHARSET=latin1;

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

CREATE TABLE t2 (b_id tinyint(4) NOT NULL default '0',b_a tinyint(4) NOT NULL default '0', PRIMARY KEY  (b_id), KEY  (b_a), 

                CONSTRAINT fk_b_a FOREIGN KEY (b_a) REFERENCES t1 (a_id) ON DELETE CASCADE ON UPDATE NO ACTION) ENGINE=InnoDB DEFAULT CHARSET=latin1;

INSERT INTO t2 VALUES (1,1),(2,1),(3,1),(4,2),(5,2);

SELECT * FROM (SELECT t1.*,GROUP_CONCAT(t2.b_id SEPARATOR ',') as b_list FROM (t1 LEFT JOIN (t2) on t1.a_id = t2.b_a) GROUP BY t1.a_id ) AS xyz;

DROP TABLE t2;

DROP TABLE t1;



#

# check null values #2

#



CREATE TABLE t1 (A_ID INT NOT NULL,A_DESC CHAR(3) NOT NULL,PRIMARY KEY (A_ID));

INSERT INTO t1 VALUES (1,'ABC'), (2,'EFG'), (3,'HIJ');

CREATE TABLE t2 (A_ID INT NOT NULL,B_DESC CHAR(3) NOT NULL,PRIMARY KEY (A_ID,B_DESC));

INSERT INTO t2 VALUES (1,'A'),(1,'B'),(3,'F');

SELECT t1.A_ID, GROUP_CONCAT(t2.B_DESC) AS B_DESC FROM t1 LEFT JOIN t2 ON t1.A_ID=t2.A_ID GROUP BY t1.A_ID ORDER BY t1.A_DESC;

DROP TABLE t1;

DROP TABLE t2;

sql/item_sum.cc

+9 −6
Original line number Diff line number Diff line
@@ -1970,8 +1970,8 @@ Item_func_group_concat::fix_fields(THD *thd, TABLE_LIST *tables, Item **ref) 
  {

    if (args[i]->fix_fields(thd, tables, args + i) || args[i]->check_cols(1))

      return 1;

    if (i < arg_count_field && args[i]->maybe_null)

      maybe_null= 0;

    if (i < arg_count_field)

      maybe_null |= args[i]->maybe_null;

  }



  result_field= 0;
@@ -2043,10 +2043,13 @@ bool Item_func_group_concat::setup(THD *thd) 


    Note that in the table, we first have the ORDER BY fields, then the

    field list.



    We need to set set_sum_field in true for storing value of blob in buffer 

    of a record instead of a pointer of one. 

  */

  if (!(table=create_tmp_table(thd, tmp_table_param, all_fields, 0,

			       0, 0, 0,select_lex->options | thd->options,

			       (char *) "")))

  if (!(table=create_tmp_table(thd, tmp_table_param, all_fields, 

			       (ORDER*) 0, 0, TRUE,select_lex->options | thd->options,

			       HA_POS_ERROR,(char *) "")))

    DBUG_RETURN(1);

  table->file->extra(HA_EXTRA_NO_ROWS);

  table->no_rows= 1;