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############## mysql-test\t\auto_increment_offset_func.test ####################
# #
# Variable Name: auto_increment_offset #
# Scope: GLOBAL & SESSION #
# Access Type: Dynamic #
# Data Type: Numeric #
# Default Value: 1 #
# Range: 1 - 65536 #
# #
# #
# Creation Date: 2008-03-07 #
# Author: Salman Rawala #
# #
# Description: Test Cases of Dynamic System Variable "auto_increment_offset" #
# that checks functionality of this variable #
# #
# Reference: http://dev.mysql.com/doc/refman/5.1/en/ #
# server-system-variables.html#option_mysqld_auto-increment-offset #
# #
################################################################################
# save vars
SET @global_auto_increment_increment = @@global.auto_increment_increment;
SET @session_auto_increment_increment = @@session.auto_increment_increment;
SET @global_auto_increment_offset = @@global.auto_increment_offset;
SET @session_auto_increment_offset = @@session.auto_increment_offset;
--disable_warnings
drop table if exists t1;
--enable_warnings
#########################
# Creating new table #
#########################
--echo ## Creating New Table ##
CREATE TABLE t1
(
id INT NOT NULL auto_increment,
PRIMARY KEY (id),
name VARCHAR(30)
);
--echo '#--------------------FN_DYNVARS_002_01-------------------------#'
#######################################################
# Setting initial value of auto_increment_offset #
#######################################################
--echo ## Setting initial value of variable to 5 ##
SET @@auto_increment_increment = 10;
SET @@auto_increment_offset = 5;
--echo '#--------------------FN_DYNVARS_002_02-------------------------#'
###########################################################################
# Inserting first value in table to check auto_increment_offset initial
# behavior
###########################################################################
--echo ## Inserting records in table and verifying variable's behavior ##
INSERT into t1(name) values('Record_1');
SELECT * from t1;
INSERT into t1(name) values('Record_2');
SELECT * from t1;
--echo ## Test behavior of variable after updating value of variable ##
SET @@auto_increment_offset = 24;
SELECT @@auto_increment_offset;
INSERT into t1(name) values('Record_3');
SELECT * from t1;
INSERT into t1(name) values('Record_4');
SELECT * from t1;
--echo '#--------------------FN_DYNVARS_002_03-------------------------#'
##########################################################
# Test behavior of variable on new connection # 01 #
##########################################################
--echo ## Changing value of global scope before opening new connection ##
SET @@global.auto_increment_increment = 15;
SET @@global.auto_increment_offset = 36;
CONNECT (test_con1,localhost,root,,);
CONNECTION test_con1;
--echo ## Value of session & global vairable here should be 10 ##
SELECT @@global.auto_increment_offset = 36;
SELECT @@session.auto_increment_offset = 36;
--echo ## Verify global value effect of variable by inserting new rows in table ##
INSERT into t1(name) values('Record_5');
INSERT into t1(name) values('Record_6');
SELECT * from t1;
--echo ## Setting session value of variable and inserting data in table ##
SET @@session.auto_increment_offset = 54;
INSERT into t1(name) values('Record_7');
INSERT into t1(name) values('Record_8');
SELECT * from t1;
--echo '#--------------------FN_DYNVARS_002_04-------------------------#'
######################################################################
# Test behavior of variable on assigning value to variable that is
# less than last index id
######################################################################
--echo ## Setting value of variable less than last insert id ##
SET @@session.auto_increment_offset = 5;
INSERT into t1(name) values('Record_9');
INSERT into t1(name) values('Record_10');
INSERT into t1(name) values('Record_11');
INSERT into t1(name) values('Record_12');
SELECT * from t1;
--echo '#--------------------FN_DYNVARS_002_05-------------------------#'
#####################################################################
# Verify variable's behavior on assigning value greater than
# auto_increment_increment value
#####################################################################
--echo ## Assigning value to variable greater than auto_increment_incrent value ##
SET @@auto_increment_offset = 140;
SET @@auto_increment_increment = 10;
INSERT into t1(name) values('Record_13');
INSERT into t1(name) values('Record_14');
SELECT * from t1;
--echo '#--------------------FN_DYNVARS_002_06-------------------------#'
###############################################################################
# Altering table field to different datatypes and checking their behavior #
###############################################################################
--echo ## Changing datatype of column id with primary key to SmallInt ##
ALTER table t1 modify id SMALLINT NOT NULL auto_increment;
INSERT into t1(name) values('Record_15');
INSERT into t1(name) values('Record_16');
SELECT * from t1;
--echo ## Changing datatype of column id with primary key to BigInt ##
ALTER table t1 modify id BIGINT NOT NULL auto_increment;
INSERT into t1(name) values('Record_17');
INSERT into t1(name) values('Record_18');
SELECT * from t1;
--echo '#--------------------FN_DYNVARS_002_07-------------------------#'
###############################################################################
# Check behavior of variable after assigning invalid values to variable #
###############################################################################
--echo ## Assigning -ve value to variable ##
SET @@auto_increment_offset = -10;
SELECT @@auto_increment_offset = -10;
INSERT into t1(name) values('Record_17');
INSERT into t1(name) values('Record_18');
SELECT * from t1;
--echo ## Assigning value that is out of range of variable ##
SET @@auto_increment_offset = 65536;
SELECT @@auto_increment_offset;
INSERT into t1(name) values('Record_17');
INSERT into t1(name) values('Record_18');
INSERT into t1(name) values('Record_19');
INSERT into t1(name) values('Record_20');
SELECT * from t1;
--echo ## No effect of auto_increment_offset since value of this variable is greater ##
--echo ## than auto_increment_increment ##
############################################################
# Disconnecting all connection & dropping table #
############################################################
--echo ## Dropping table ##
DROP table if exists t1;
DISCONNECT test_con1;
connection default;
# restore vars
SET @@global.auto_increment_increment = @global_auto_increment_increment;
SET @@session.auto_increment_increment = @session_auto_increment_increment;
SET @@global.auto_increment_offset = @global_auto_increment_offset;
SET @@session.auto_increment_offset = @session_auto_increment_offset;
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