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############# 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
SET SESSION sql_select_limit = 0;
SELECT * FROM t1;
--echo Expecting affected rows: 0
SELECT * FROM t1 INNER JOIN t2 ON t1.a = t2.a;
--echo Expecting affected rows: 0
--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;
connect (con_int1,localhost,root,,);
connection con_int1;
SELECT @@SESSION.sql_select_limit;
--echo 2 Expected
SET SESSION sql_select_limit = 10;
connect (con_int2,localhost,root,,);
connection con_int2;
SELECT @@SESSION.sql_select_limit;
--echo 2 Expected
SET SESSION sql_select_limit = 12;
connection con_int2;
SELECT @@SESSION.sql_select_limit;
--echo 12 Expected
connection con_int1;
SELECT @@SESSION.sql_select_limit;
--echo 10 Expected
SELECT @@GLOBAL.sql_select_limit;
--echo 2 Expected
connection default;
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;
|
