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Current File : /www/server/mysql/src/mysql-test/suite/sys_vars/t/auto_increment_offset_basic.test
############## mysql-test\t\auto_increment_offset_basic.test ###################
#                                                                              #
# Variable Name: auto_increment_offset                                         #
# Scope: GLOBAL & SESSION                                                      #
# Access Type: Dynamic                                                         #
# Data Type: Numeric                                                           #
# Default Value: 1                                                             #
# Range: 1 - 65536                                                             #
#                                                                              #
#                                                                              #
# Creation Date: 2008-02-07                                                    #
# Author:  Salman Rawala                                                       #
#                                                                              #
# Description: Test Cases of Dynamic System Variable "auto_increment_offset"   #
#              that checks behavior of this variable in the following ways     #
#              * Default Value                                                 #
#              * Valid & Invalid values                                        #
#              * Scope & Access method                                         #
#              * Data Integrity                                                #
#                                                                              #
# Reference: http://dev.mysql.com/doc/refman/5.1/en/                           #
#  server-system-variables.html#option_mysqld_auto-increment-offset            #
#                                                                              #
################################################################################

--source include/load_sysvars.inc

#####################################################################
#           START OF auto_increment_offset TESTS                    #
#####################################################################

#############################################################
#                 Save initial value                        #
#############################################################

SET @start_global_value = @@global.auto_increment_offset;
SELECT @start_global_value;
SET @start_session_value = @@session.auto_increment_offset;
SELECT @start_session_value;


--echo '#--------------------FN_DYNVARS_002_01-------------------------#'
#####################################################################
#     Display the DEFAULT value of auto_increment_offset            #
#####################################################################

SET @@global.auto_increment_offset = 100;
SET @@global.auto_increment_offset = DEFAULT;
SELECT @@global.auto_increment_offset;

SET @@session.auto_increment_offset = 200;
SET @@session.auto_increment_offset = DEFAULT;
SELECT @@session.auto_increment_offset;


--echo '#--------------------FN_DYNVARS_002_02-------------------------#'
#####################################################################
#     Check the DEFAULT value of auto_increment_offset              #
#####################################################################

SET @@global.auto_increment_offset = @start_global_value;
SELECT @@global.auto_increment_offset = 1;
SET @@session.auto_increment_offset = @start_session_value;
SELECT @@session.auto_increment_offset = 1;


--echo '#--------------------FN_DYNVARS_002_03-------------------------#'
###############################################################################
# Change the value of auto_increment_offset to a valid value for GLOBAL Scope #
###############################################################################

SET @@global.auto_increment_offset = 1;
SELECT @@global.auto_increment_offset;
SET @@global.auto_increment_offset = 60020;
SELECT @@global.auto_increment_offset;
SET @@global.auto_increment_offset = 65535;
SELECT @@global.auto_increment_offset;


--echo '#--------------------FN_DYNVARS_002_04-------------------------#'
###############################################################################
# Change the value of auto_increment_offset to a valid value for SESSION Scope#
###############################################################################

SET @@session.auto_increment_offset = 1;
SELECT @@session.auto_increment_offset;
SET @@session.auto_increment_offset = 50050;
SELECT @@session.auto_increment_offset;
SET @@session.auto_increment_offset = 65535;
SELECT @@session.auto_increment_offset;


--echo '#------------------FN_DYNVARS_002_05-----------------------#'
#################################################################
# Change the value of auto_increment_offset to an invalid value #
#################################################################
# for global scope
SET @@global.auto_increment_offset = 0;
SELECT @@global.auto_increment_offset;
SET @@global.auto_increment_offset = -1024;
SELECT @@global.auto_increment_offset;
SET @@global.auto_increment_offset = 65536;
SELECT @@global.auto_increment_offset;
SET @@global.auto_increment_offset = 4294967295;
SELECT @@global.auto_increment_offset;
--Error ER_WRONG_TYPE_FOR_VAR
SET @@global.auto_increment_offset = 65535.4;
SELECT @@global.auto_increment_offset;
--Error ER_WRONG_TYPE_FOR_VAR
SET @@global.auto_increment_offset = ON;
SELECT @@global.auto_increment_offset;
--Error ER_WRONG_TYPE_FOR_VAR
SET @@global.auto_increment_offset = OFF;
SELECT @@global.auto_increment_offset;
--Error ER_WRONG_TYPE_FOR_VAR
SET @@global.auto_increment_offset = test;
SELECT @@global.auto_increment_offset;
# for session scope
SET @@session.auto_increment_offset = 0;
SELECT @@session.auto_increment_offset;
SET @@session.auto_increment_offset = -1024;
SELECT @@session.auto_increment_offset;
SET @@session.auto_increment_offset = 65536;
SELECT @@session.auto_increment_offset;
SET @@session.auto_increment_offset = 4294967295;
SELECT @@session.auto_increment_offset;
--Error ER_WRONG_TYPE_FOR_VAR
SET @@session.auto_increment_offset = 65535.4;
SELECT @@session.auto_increment_offset;
--Error ER_WRONG_TYPE_FOR_VAR
SET @@session.auto_increment_offset = ON;
SELECT @@session.auto_increment_offset;
--Error ER_WRONG_TYPE_FOR_VAR
SET @@session.auto_increment_offset = OFF;
SELECT @@session.auto_increment_offset;
--Error ER_WRONG_TYPE_FOR_VAR
SET @@session.auto_increment_offset = test;
SELECT @@session.auto_increment_offset;



--echo '#------------------FN_DYNVARS_002_06-----------------------#'
####################################################################
#   Check if the value in GLOBAL Table matches value in variable   #
####################################################################

--disable_warnings
SELECT @@global.auto_increment_offset = VARIABLE_VALUE 
FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES 
WHERE VARIABLE_NAME='auto_increment_offset';
--enable_warnings


--echo '#------------------FN_DYNVARS_002_07-----------------------#'
####################################################################
#  Check if the value in SESSION Table matches value in variable   #
####################################################################

--disable_warnings
SELECT @@session.auto_increment_offset = VARIABLE_VALUE 
FROM INFORMATION_SCHEMA.SESSION_VARIABLES 
WHERE VARIABLE_NAME='auto_increment_offset';
--enable_warnings


--echo '#------------------FN_DYNVARS_002_08-----------------------#'
####################################################################
#     Check if TRUE and FALSE values can be used on variable       #
####################################################################

SET @@global.auto_increment_offset = TRUE;
SELECT @@global.auto_increment_offset;
SET @@global.auto_increment_offset = FALSE;
SELECT @@global.auto_increment_offset;


--echo '#---------------------FN_DYNVARS_001_09----------------------#'
###############################################################################
#  Check if global and session variables are independant of each other        #
###############################################################################

SET @@global.auto_increment_offset = 10;
SET @@session.auto_increment_offset = 11;
SELECT @@auto_increment_offset = @@global.auto_increment_offset;


--echo '#---------------------FN_DYNVARS_001_10----------------------#'
##############################################################################
#    Check if accessing variable with SESSION,LOCAL and without SCOPE points #
#    to same session variable                                                #
##############################################################################

SET @@auto_increment_offset = 100;
SELECT @@auto_increment_offset = @@local.auto_increment_offset;
SELECT @@local.auto_increment_offset = @@session.auto_increment_offset;


--echo '#---------------------FN_DYNVARS_001_11----------------------#'
###############################################################################
#   Check if auto_increment_offset can be accessed with and without @@ sign   #
###############################################################################

SET auto_increment_offset = 1;
SELECT @@auto_increment_offset;
--Error ER_UNKNOWN_TABLE
SELECT local.auto_increment_offset;
--Error ER_UNKNOWN_TABLE
SELECT session.auto_increment_offset;
--Error ER_BAD_FIELD_ERROR
SELECT auto_increment_offset = @@session.auto_increment_offset;


####################################
#     Restore initial value        #
####################################

SET @@global.auto_increment_offset = @start_global_value;
SELECT @@global.auto_increment_offset;
SET @@session.auto_increment_offset = @start_session_value;
SELECT @@session.auto_increment_offset;


###################################################
#          END OF auto_increment_offset TESTS     #
###################################################


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