mirror of
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202 lines
5.7 KiB
Plaintext
202 lines
5.7 KiB
Plaintext
SET @global_auto_increment_increment = @@global.auto_increment_increment;
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SET @session_auto_increment_increment = @@session.auto_increment_increment;
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SET @global_auto_increment_offset = @@global.auto_increment_offset;
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SET @session_auto_increment_offset = @@session.auto_increment_offset;
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drop table if exists t1;
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CREATE TABLE t1
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(
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id INT NOT NULL auto_increment,
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PRIMARY KEY (id),
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name VARCHAR(30)
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);
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'#--------------------FN_DYNVARS_001_01-------------------------#'
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## Setting initial value of auto_increment_increment to 5 ##
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SET @@auto_increment_increment = 5;
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'#--------------------FN_DYNVARS_001_02-------------------------#'
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## Inserting first record in table to check behavior of the variable ##
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INSERT into t1(name) values('Record_1');
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SELECT * from t1;
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id name
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1 Record_1
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## Changing value of variable to 10 ##
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SET @@global.auto_increment_increment = 10;
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## Inserting record and verifying value of column id ##
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INSERT into t1(name) values('Record_2');
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SELECT * from t1;
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id name
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1 Record_1
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6 Record_2
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## Test behavior of variable after assigning some larger value to it ##
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SELECT @@auto_increment_increment;
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@@auto_increment_increment
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5
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SET @@auto_increment_increment = 100;
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INSERT into t1(name) values('Record_5');
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SELECT * from t1;
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id name
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1 Record_1
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6 Record_2
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101 Record_5
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'#--------------------FN_DYNVARS_001_03-------------------------#'
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## Creating new connection test_con1 ##
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## Value of session & global vairable here should be 10 ##
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SELECT @@global.auto_increment_increment = 10;
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@@global.auto_increment_increment = 10
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1
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SELECT @@session.auto_increment_increment = 10;
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@@session.auto_increment_increment = 10
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1
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## Setting global value of variable and inserting data in table ##
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SET @@global.auto_increment_increment = 20;
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SELECT @@global.auto_increment_increment;
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@@global.auto_increment_increment
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20
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INSERT into t1(name) values('Record_6');
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SELECT * from t1;
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id name
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1 Record_1
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6 Record_2
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101 Record_5
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111 Record_6
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## Setting session value of variable and inserting data in table ##
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SET @@session.auto_increment_increment = 2;
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SELECT @@session.auto_increment_increment;
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@@session.auto_increment_increment
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2
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INSERT into t1(name) values('Record_8');
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INSERT into t1(name) values('Record_9');
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SELECT * from t1;
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id name
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1 Record_1
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6 Record_2
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101 Record_5
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111 Record_6
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113 Record_8
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115 Record_9
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'#--------------------FN_DYNVARS_001_04-------------------------#'
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## Creating another new connection test_con2 ##
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## Verifying initial values of variable in global & session scope ##
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## global & session initial value should be 20 ##
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SELECT @@global.auto_increment_increment = 20;
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@@global.auto_increment_increment = 20
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1
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SELECT @@session.auto_increment_increment = 20;
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@@session.auto_increment_increment = 20
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1
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## Setting value of session variable to 5 and verifying its behavior ##
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SET @@session.auto_increment_increment = 5;
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INSERT into t1(name) values('Record_10');
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SELECT * from t1;
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id name
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1 Record_1
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6 Record_2
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101 Record_5
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111 Record_6
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113 Record_8
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115 Record_9
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116 Record_10
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'Bug#35362: Here Record_10 id should be 120 instead of 115 because we'
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'have set the value of variable to 5'
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SET @@session.auto_increment_increment = 1;
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SELECT @@auto_increment_increment;
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@@auto_increment_increment
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1
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SELECT @@global.auto_increment_increment;
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@@global.auto_increment_increment
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20
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'#--------------------FN_DYNVARS_001_05-------------------------#'
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## Switching to test_con1 ##
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## Verifying values of global & session value of variable ##
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## global value should be 20 ##
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SELECT @@global.auto_increment_increment = 20;
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@@global.auto_increment_increment = 20
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1
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## session value should be 2 ##
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SELECT @@session.auto_increment_increment = 2;
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@@session.auto_increment_increment = 2
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1
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INSERT into t1(name) values('Record_11');
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INSERT into t1(name) values('Record_12');
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SELECT * from t1;
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id name
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1 Record_1
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6 Record_2
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101 Record_5
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111 Record_6
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113 Record_8
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115 Record_9
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116 Record_10
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117 Record_11
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119 Record_12
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'#--------------------FN_DYNVARS_001_06-------------------------#'
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## Changing column's datatype to SmallInt and verifying variable's behavior ##
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ALTER table t1 MODIFY id SMALLINT NOT NULL auto_increment;
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INSERT into t1(name) values('Record_13');
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INSERT into t1(name) values('Record_14');
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SELECT * from t1;
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id name
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1 Record_1
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6 Record_2
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101 Record_5
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111 Record_6
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113 Record_8
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115 Record_9
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116 Record_10
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117 Record_11
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119 Record_12
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121 Record_13
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123 Record_14
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## Changing column's datatype to BigInt and verifying variable's behavior ##
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ALTER table t1 MODIFY id BIGINT NOT NULL auto_increment;
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INSERT into t1(name) values('Record_15');
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INSERT into t1(name) values('Record_16');
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SELECT * from t1;
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id name
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1 Record_1
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6 Record_2
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101 Record_5
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111 Record_6
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113 Record_8
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115 Record_9
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116 Record_10
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117 Record_11
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119 Record_12
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121 Record_13
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123 Record_14
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125 Record_15
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127 Record_16
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'#--------------------FN_DYNVARS_001_07-------------------------#'
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## Verifying behavior of variable with negative value ##
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SET @@auto_increment_increment = -10;
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Warnings:
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Warning 1292 Truncated incorrect auto_increment_increment value: '-10'
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INSERT into t1(name) values('Record_17');
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INSERT into t1(name) values('Record_18');
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SELECT * from t1;
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id name
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1 Record_1
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6 Record_2
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101 Record_5
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111 Record_6
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113 Record_8
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115 Record_9
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116 Record_10
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117 Record_11
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119 Record_12
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121 Record_13
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123 Record_14
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125 Record_15
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127 Record_16
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128 Record_17
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129 Record_18
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'Bug#35364: Variable is incrementing some random values on assigning -ve value'
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## Disconnecting test_con2 ##
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## Dropping table t1 ##
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DROP table if exists t1;
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## Disconnecting test_con1 ##
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## switching to default connection ##
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SET @@global.auto_increment_increment = @global_auto_increment_increment;
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SET @@session.auto_increment_increment = @session_auto_increment_increment;
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SET @@global.auto_increment_offset = @global_auto_increment_offset;
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SET @@session.auto_increment_offset = @session_auto_increment_offset;
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