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Updating boolean value in MySQL?
To update boolean value, you can use SET. Let us first create a table −
mysql> create table DemoTable ( Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, isMarried boolean ); Query OK, 0 rows affected (0.58 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable(isMarried) values(false); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable(isMarried) values(true); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable(isMarried) values(true); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable(isMarried) values(false); Query OK, 1 row affected (0.13 sec)
Display all records from the table using select statement −
mysql> select *from DemoTable;
This will produce the following output −
+----+-----------+ | Id | isMarried | +----+-----------+ | 1 | 0 | | 2 | 1 | | 3 | 1 | | 4 | 0 | +----+-----------+ 4 rows in set (0.00 sec)
Following is the query to update boolean value −
mysql> update DemoTable set isMarried = !isMarried where Id=4; Query OK, 1 row affected (0.17 sec) Rows matched: 1 Changed: 1 Warnings: 0
Let us display the table records once again −
mysql> select *from DemoTable;
This will produce the following output. Here, we updated the boolean value for Id 4 −
+----+-----------+ | Id | isMarried | +----+-----------+ | 1 | 0 | | 2 | 1 | | 3 | 1 | | 4 | 1 | +----+-----------+ 4 rows in set (0.00 sec)
Look at the above sample output, the row with Id 4 has been updated.
Updated on: 30-Jul-2019
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