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############# mysql-test\t\max_sort_length_func.test ###########################
# #
# Variable Name: sql_warnings #
# Scope: SESSION #
# Access Type: Dynamic #
# Data Type: NUMERIC #
# Default Value: 1024 #
# Values: 4-8388608 #
# #
# #
# Creation Date: 2008-03-02 #
# Author: Sharique Abdullah #
# #
# Description: Test Cases of Dynamic System Variable max_sort_length #
# 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/server-system-variables.html #
# #
################################################################################
#
# Setup
#
SET @start_value= @@global.max_sort_length;
SET @session_max_sort_length = @@Session.max_sort_length;
--disable_warnings
DROP TABLE IF EXISTS t;
--enable_warnings
#########################
# Creating new table #
#########################
--echo ** creating tables **
CREATE TABLE t
(
id INT AUTO_INCREMENT PRIMARY KEY,
c TEXT(30)
);
CREATE TABLE t1
(
id INT AUTO_INCREMENT PRIMARY KEY,
c BLOB(30)
);
CREATE TABLE t2
(
id INT AUTO_INCREMENT PRIMARY KEY,
c TEXT(30)
);
--echo '#--------------------FN_DYNVARS_098_01-------------------------#'
##########################################################
# Test behavior of variable on new connection # 01 #
##########################################################
connect (test_con1,localhost,root,,);
connection test_con1;
# Value of session & global vairable here should be 10
SELECT @@global.max_sort_length = 10;
SELECT @@session.max_sort_length = 10;
# Setting global value of variable and inserting data in table
--echo ** Setting value to 30 and inserting data **
SET @@global.max_sort_length = 30;
SELECT @@global.max_sort_length;
INSERT INTO t set c = repeat('x',29);
INSERT INTO t set c = concat(repeat('x',28),'r','x');
INSERT INTO t set c = concat(repeat('x',28),'s','y');
INSERT INTO t set c = concat(repeat('x',28),'g','w');
SELECT c from t ORDER BY c, id;
--echo ** Results should be sorted **
# Setting session value of variable and inserting data in table
SET @@session.max_sort_length = 29;
SELECT @@session.max_sort_length;
INSERT INTO t set c = repeat('x',29);
INSERT INTO t set c = concat(repeat('x',28),'r','x');
INSERT INTO t set c = concat(repeat('x',28),'s','y');
INSERT INTO t set c = concat(repeat('x',28),'g','w');
SELECT c from t ORDER BY c, id;
--echo ** Results should be sorted **
--echo '#--------------------FN_DYNVARS_098_02-------------------------#'
##########################################################
# Test behavior of variable on new connection # 02 #
##########################################################
connect (test_con2,localhost,root,,);
connection test_con2;
## Setting global value of variable and inserting data in table
SET @@global.max_sort_length = 30;
SELECT @@global.max_sort_length;
INSERT INTO t set c = repeat('x',29);
INSERT INTO t set c = concat(repeat('x',28),'r','x');
INSERT INTO t set c = concat(repeat('x',28),'s','y');
INSERT INTO t set c = concat(repeat('x',28),'g','w');
SELECT c from t ORDER BY c, id;
--echo ** Results should be sorted **
# Setting session value of variable and inserting data in table
SET @@session.max_sort_length = 20;
SELECT @@session.max_sort_length;
INSERT INTO t set c = repeat('x',29);
INSERT INTO t set c = concat(repeat('x',28),'r','x');
INSERT INTO t set c = concat(repeat('x',28),'s','y');
INSERT INTO t set c = concat(repeat('x',28),'g','w');
SELECT c from t ORDER BY c, id;
--echo ** Results should not be sorted **
--echo '#--------------------FN_DYNVARS_098_03-------------------------#'
#########################################################
#Check if sorting is applied with the max_sort_length=20#
#########################################################
###########################################
# Setting new value for max_sort_length #
###########################################
SET max_sort_length=20;
###################################
# Inserting values in table t #
###################################
INSERT INTO t set c = repeat('x',29);
INSERT INTO t set c = concat(repeat('x',28),'r','x');
INSERT INTO t set c = concat(repeat('x',28),'s','y');
INSERT INTO t set c = concat(repeat('x',28),'g','w');
SELECT c from t ORDER BY c, id;
--echo ** Results should not be sorted **
RESET QUERY CACHE;
--echo '#--------------------FN_DYNVARS_098_04-------------------------#'
#########################################################
#Check if sorting is applied with the max_sort_length=29#
#########################################################
SET max_sort_length=29;
SELECT c from t ORDER BY c, id;
--echo ** Results should be sorted **
--echo '#--------------------FN_DYNVARS_098_05-------------------------#'
#########################################################
#Check if sorting is applied with the max_sort_length=30#
#########################################################
SET max_sort_length=30;
SELECT c from t ORDER BY c, id;
--echo ** Results should be sorted **
--echo '#--------------------FN_DYNVARS_098_06-------------------------#'
##############################################################
#Check if sorting is applied with the max_sort_length=Default#
##############################################################
SET max_sort_length=default;
SELECT c from t ORDER BY c, id;
--echo ** Results should be sorted **
--echo '#--------------------FN_DYNVARS_098_07-------------------------#'
###########################################
#Check if sorting is applied on BLOB type #
###########################################
--echo Testing type BLOB
# Setting global value of variable and inserting data in table
SET @@global.max_sort_length = 30;
SELECT @@global.max_sort_length;
INSERT INTO t1 set c = repeat('x',29);
INSERT INTO t1 set c = concat(repeat('x',28),'r','x');
INSERT INTO t1 set c = concat(repeat('x',28),'s','y');
INSERT INTO t1 set c = concat(repeat('x',28),'g','w');
SELECT c from t1 ORDER BY c, id;
--echo ** Results should be sorted **
# Setting session value of variable and inserting data in table
SET @@session.max_sort_length = 20;
SELECT @@session.max_sort_length;
INSERT INTO t1 set c = repeat('x',29);
INSERT INTO t1 set c = concat(repeat('x',28),'r','x');
INSERT INTO t1 set c = concat(repeat('x',28),'s','y');
INSERT INTO t1 set c = concat(repeat('x',28),'g','w');
SELECT c from t1 ORDER BY c, id;
--echo ** Results should not be sorted **
--echo '#--------------------FN_DYNVARS_098_08-------------------------#'
###########################################
#Check if sorting is applied on CHAR type #
###########################################
--echo Testing type CHAR
# Setting global value of variable and inserting data in table
SET @@global.max_sort_length = 30;
SELECT @@global.max_sort_length;
INSERT INTO t2 set c = repeat('x',29);
INSERT INTO t2 set c = concat(repeat('x',28),'r','x');
INSERT INTO t2 set c = concat(repeat('x',28),'s','y');
INSERT INTO t2 set c = concat(repeat('x',28),'g','w');
SELECT c from t2 ORDER BY c, id;
--echo ** Results should not be sorted **
# Setting session value of variable and inserting data in table
SET @@session.max_sort_length = 20;
SELECT @@session.max_sort_length;
INSERT INTO t2 set c = repeat('x',29);
INSERT INTO t2 set c = concat(repeat('x',28),'r','x');
INSERT INTO t2 set c = concat(repeat('x',28),'s','y');
INSERT INTO t2 set c = concat(repeat('x',28),'g','w');
SELECT c from t2 ORDER BY c, id;
--echo ** Results should not be sorted **
#
# Cleanup
#
connection default;
disconnect test_con1;
disconnect test_con2;
SET @@SESSION.max_sort_length = @session_max_sort_length;
--disable_warnings
DROP TABLE IF EXISTS t;
DROP TABLE IF EXISTS t1;
DROP TABLE IF EXISTS t2;
--enable_warnings
SET @@global.max_sort_length= @start_value;
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