If there is a column in it that contains a default value then whenever a new row will be inserted to this table and you have not assigned any value to the default value column then the default value will be automatically inserted for that row.
If you want to read more about creating tables in MySQL, click the below link.Ĭreate table with constraints MySQL query What is the meaning of adding default value to a column in MySQL?Īdding a default value to a column in MySQL means that if no value is specified for that column when a new record is inserted, the default value will be used.įor example, if you have a table named employee that has multiple columns in it. In the above query, we have assigned a false value to the column is_active in the create table SQL query. If you use BOOL or BOOLEAN, then MySQL internally converts it into TINYINT (1). To add a boolean type column with a default value while creating a table in MySQL, the following SQL syntax can be used:įor example, if we want to create a table named student in our MySQL database with a column named is_active then we can use the below MySQL query. To deal with Boolean in MySQL, you can use BOOL or BOOLEAN or TINYINT (1). Add boolean type column with default value while creating the table If you want to read more about ALTER TABLE query click here. Next, assign a default value 0(false) or 1(true) to the column and run the MySQL query.įinally, use the SELECT command to verify that the new column has been added and that the default value is correct. If your table already exists in the database and you want to add a boolean column with a default value (true or false), then you can use the MySQL queries explained below.įor example - If we have a table named user and we want to add a new column is_active that has a data type Boolean and we want to assign a default value to it then we can use the below MySQL query.Īdd with default value false(0) ALTER TABLE userĪdd with default value true(1) ALTER TABLE userĪdding a Boolean column with a default value to an existing MySQL table can be done in a few simple steps.įirst, use the ALTER TABLE command to add the new column.
Add a Boolean column with a default value in an existing MySQL table
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