Insert statement that checks for duplicate before insert

Question

I need to make a insert but only if similar record don\'t exists
for example:

INSERT INTO requests (\'user_id\',\'subject\',\'text\',\'time\') V

Answer 1

You can use IGNORE command

For example, use like this

INSERT IGNORE INTO requests ('user_id','subject','text','time') VALUES (56,'test','test 1234',6516516)

instead of,

INSERT INTO requests ('user_id','subject','text','time') VALUES (56,'test','test 1234',6516516)