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Increment multiple Timestamp values by setting the incremented value in a user-defined variable in SQL
The incremented value can be set in a user-defined variable as shown below. Here, “yourValue” is the incremented value. After that, use MySQL UPDATE to update the column and increment timestamp values −
set @anyVariableName :=yourValue; update yourTableName set yourColumnName=yourColumnName+interval (@yourVariableName) second;
Let us first create a table −
mysql> create table DemoTable ( DueDatetime timestamp ); Query OK, 0 rows affected (0.73 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable values('2019-01-31 12 :30 :40');
Query OK, 1 row affected (0.25 sec)
mysql> insert into DemoTable values('2019-09-06 10 :00 :00');
Query OK, 1 row affected (0.73 sec)
mysql> insert into DemoTable values('2019-09-07 11 :10 :24');
Query OK, 1 row affected (0.25 sec)Display all records from the table using select statement −
mysql> select *from DemoTable;
This will produce the following output −
+-----------------------+ | DueDatetime | +-----------------------+ | 2019-01-31 12 :30 :40 | | 2019-09-06 10 :00 :00 | | 2019-09-07 11 :10 :24 | +-----------------------+ 3 rows in set (0.00 sec)
Following is the query to increment multiple timestamp values −
mysql> set @secondValue :=12; Query OK, 0 rows affected (0.00 sec) mysql> update DemoTable set DueDatetime=DueDatetime+interval (@secondValue) second; Query OK, 3 rows affected (0.99 sec) Rows matched : 3 Changed : 3 Warnings : 0
Let us check the table records once again −
mysql> select *from DemoTable;
This will produce the following output. The timestamp values are now incremented −
+-----------------------+ | DueDatetime | +-----------------------+ | 2019-01-31 12 :30 :52 | | 2019-09-06 10 :00 :12 | | 2019-09-07 11 :10 :36 | +-----------------------+ 3 rows in set (0.00 sec)
Updated on: 07-Oct-2019
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