############# mysql-test\t\sql_big_selects_func.test ######################
#                                                                         #
# Variable Name: sql_big_selects                                          #
# Scope: SESSION                                                          #
# Access Type: Dynamic                                                    #
# Data Type: BOOLEAN                                                      #
# Default Value: 1 TRUE                                                   #
# Values:       1 TRUE, 0 FALSE                                           #
#                                                                         #
#                                                                         #
# Creation Date: 2008-02-25                                               #
# Author:  Sharique Abdullah                                              #
#                                                                         #
# Description: Test Cases of Dynamic System Variable "sql_big_selects"    #
#              that checks behavior of this variable in the following ways#
#              * Functionality based on different values                  #
#                                                                         #
# Reference: http://dev.mysql.com/doc/refman/5.1/en/set-option.html       #
#                                                                         #
###########################################################################

--echo ** Setup **
--echo
#
# Setup
#

SET @session_sql_big_selects = @@SESSION.sql_big_selects;
SET @session_max_join_size = @@SESSION.max_join_size;
SET @global_max_join_size = @@GLOBAL.max_join_size;
SET MAX_JOIN_SIZE=21;

#
# Create tables
#

CREATE TEMPORARY TABLE t1(a varchar(20) not null, b varchar(20));
CREATE TEMPORARY TABLE t2(a varchar(20) null, b varchar(20));

INSERT INTO t1 VALUES('aa','bb');
INSERT INTO t1 VALUES('aa1','bb');
INSERT INTO t1 VALUES('aa2','bb');
INSERT INTO t1 VALUES('aa3','bb');
INSERT INTO t1 VALUES('aa4','bb');

INSERT INTO t2 VALUES('aa','bb');
INSERT INTO t2 VALUES('aa1','bb');
INSERT INTO t2 VALUES('aa2','bb');
INSERT INTO t2 VALUES('aa3','bb');
INSERT INTO t2 VALUES('aa4','bb');

--echo '#--------------------FN_DYNVARS_154_01-------------------------#'
#
# Testing fail condition
#

--echo Expected error "Too big select"
--error ER_TOO_BIG_SELECT
SELECT * FROM t1 INNER JOIN t2 ON t1.a = t2.a;
--echo Expected error The SELECT would examine more than MAX_JOIN_SIZE rows.

--echo '#--------------------FN_DYNVARS_154_02-------------------------#'
#
# Testing pass conditions
#

SET SESSION SQL_BIG_SELECTS = 1;

SELECT * FROM t1 INNER JOIN t2 ON t1.a = t2.a;
--echo This should work

SET SESSION SQL_BIG_SELECTS = 0;

DELETE FROM t2 WHERE a = 'aa4';
SELECT * FROM t1 INNER JOIN t2 ON t1.a = t2.a;
--echo This should work

--echo '#--------------------FN_DYNVARS_154_03-------------------------#'
#
# Session data integrity check
#

connect (con_int1,localhost,root,,);

connection con_int1;

SELECT @@SESSION.sql_big_selects;
--echo 1 Expected
SET SESSION sql_big_selects = 0;

connect (con_int2,localhost,root,,);

connection con_int2;

SELECT @@SESSION.sql_big_selects;
--echo 1 Expected

SET SESSION sql_big_selects = 1;

connection con_int1;

SELECT @@SESSION.sql_big_selects;
--echo 0 Expected

connection con_int2;

SELECT @@SESSION.sql_big_selects;
--echo 1 Expected

connection default;

disconnect con_int1;
disconnect con_int2;

#
# Cleanup
#
SET @@SESSION.sql_big_selects = @session_sql_big_selects;
SET @@SESSION.max_join_size = @session_max_join_size;
SET @@GLOBAL.max_join_size = @global_max_join_size;

DROP TABLE t1;
DROP TABLE t2;