mariadb/mysql-test/suite/sys_vars/t/sql_select_limit_func.test

############# mysql-test\t\sql_select_limit_func.test #####################
#                                                                         #
# Variable Name: sql_select_limit                                         #
# Scope: GLOBAL, SESSION                                                  #
# Access Type: Dynamic                                                    #
# Data Type: NUMERIC                                                      #
# Default Value: 4294967295                                               #
# Values:       1-4294967295                                              #
#                                                                         #
#                                                                         #
# Creation Date: 2008-02-25                                               #
# Author:  Sharique Abdullah                                              #
#                                                                         #
# Description: Test Cases of Dynamic System Variable "sql_select_limit"   #
#              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_select_limit = @@SESSION.sql_select_limit;
SET @global_sql_select_limit = @@GLOBAL.sql_select_limit;

#
# Creating tables
#

CREATE TEMPORARY TABLE t1(a int PRIMARY KEY, b varchar(20));
CREATE TEMPORARY TABLE t2(a int PRIMARY KEY, b varchar(20));
CREATE TEMPORARY TABLE t3(a int PRIMARY KEY, b varchar(20));

INSERT INTO t1 VALUES(1, 'val1');
INSERT INTO t1 VALUES(2, 'val2');
INSERT INTO t1 VALUES(3, 'val3');
INSERT INTO t1 VALUES(4, 'val4');
INSERT INTO t1 VALUES(5, 'val5');
INSERT INTO t1 VALUES(6, 'val6');
INSERT INTO t1 VALUES(7, 'val7');
INSERT INTO t1 VALUES(8, 'val8');
INSERT INTO t1 VALUES(9, 'val9');

INSERT INTO t2 VALUES(5, 'val5');
INSERT INTO t2 VALUES(6, 'val6');
INSERT INTO t2 VALUES(7, 'val7');
INSERT INTO t2 VALUES(8, 'val8');
INSERT INTO t2 VALUES(9, 'val9');



--echo '#-----------------------------FN_DYNVARS_165_01-----------------#'
--echo
--echo Value DEFAULT
--echo
#
# Value DEFAULT
#

--enable_info

SET SESSION sql_select_limit = DEFAULT;

SELECT * FROM t1;
--echo Expecting affected rows: 9

SELECT * FROM t1 INNER JOIN t2 ON t1.a = t2.a;
--echo Expecting affected rows: 5


--echo '#-----------------------------FN_DYNVARS_165_02---------------#'
#
# Small value
#

SET SESSION sql_select_limit = 2;

SELECT * FROM t1;
--echo Expecting affected rows: 2

SELECT * FROM t1 INNER JOIN t2 ON t1.a = t2.a;
--echo Expecting affected rows: 2

--echo '#-----------------------------FN_DYNVARS_165_03---------------#'
#
# Small value with LIMIT Clause
#

SET SESSION sql_select_limit = 2;

SELECT * FROM t1 LIMIT 4;
--echo Expecting affected rows: 4

SELECT * FROM t1 INNER JOIN t2 ON t1.a = t2.a LIMIT 3;
--echo Expecting affected rows: 3

--echo '#-----------------------------FN_DYNVARS_165_04----------------#'
#
# Small value with Store procedure
#

SET SESSION sql_select_limit = 2;

delimiter |;

CREATE PROCEDURE TestProc()
BEGIN
        SELECT * FROM t1;
END|
delimiter ;|

call TestProc();
--echo Expecting affected rows: 9

DROP PROCEDURE TestProc;

delimiter |;

CREATE PROCEDURE TestProc()
BEGIN
        SELECT * FROM t1 INNER JOIN t2 ON t1.a = t2.a;
END|
delimiter ;|

call TestProc();
--echo Expecting affected rows: 5

DROP PROCEDURE TestProc;

--echo '#-----------------------------FN_DYNVARS_165_05-----------------#'
#
# Small value with Non result producing SELECT statements
#

SET SESSION sql_select_limit = 2;

CREATE TEMPORARY TABLE t4(a int PRIMARY KEY, b varchar(20)) SELECT * FROM t2;
--echo Expecting Records: 5

INSERT INTO t3 SELECT * FROM t1;
--echo Expecting Records: 9

--echo '#-----------------------------FN_DYNVARS_165_06---------------------#'
#
# Session data integrity check & GLOBAL Value check
#
--disable_info

SET GLOBAL sql_select_limit = 2;

--echo ** Connecting con_int2 using root **
connect (con_int1,localhost,root,,);

--echo ** Connection con_int1 **
connection con_int1;
SELECT @@SESSION.sql_select_limit;
--echo 2 Expected

SET SESSION sql_select_limit = 10;

--echo ** Connecting con_int2 using root **
connect (con_int2,localhost,root,,);

--echo ** Connection con_int2 **
connection con_int2;
SELECT @@SESSION.sql_select_limit;
--echo 2 Expected

SET SESSION sql_select_limit = 12;

--echo ** Connection con_int2 **
connection con_int2;
SELECT @@SESSION.sql_select_limit;
--echo 12 Expected

--echo ** Connection con_int1 **
connection con_int1;
SELECT @@SESSION.sql_select_limit;
--echo 10 Expected

SELECT @@GLOBAL.sql_select_limit;
--echo 2 Expected

--echo ** Connection default **
connection default;

--echo Disconnecting Connections con_int1, con_int2
disconnect con_int1;
disconnect con_int2;


#
# Cleanup
#

--disable_info

SET @@SESSION.sql_select_limit = @session_sql_select_limit;
SET @@GLOBAL.sql_select_limit = @global_sql_select_limit;

DROP TABLE t1;
DROP TABLE t2;
DROP TABLE t3;
DROP TABLE t4;