Thursday, January 20, 2011

How to add a column to an existing table with Mysql


To add a column calledemail to the contacts table created in Create a basic MySQL table with a datatype of VARCHAR(80), use the following SQL statement:
ALTER TABLE contacts ADD email VARCHAR(60);
This first statement will add the email column to the end of the table. To insert the new column after a specific column, such as name, use this statement:
ALTER TABLE contacts ADD email VARCHAR(60) AFTER name;
If you want the new column to be first, use this statement:
ALTER TABLE contacts ADD email VARCHAR(60) FIRST;

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