create a mysql record if it doesnt exist, else update it

Question

I would like to modify this MySQL query to insert the row only if it does not exist. Otherwise, I would like to update the existing row.

Answer 1

Yes, use the INSERT INTO ... ON DUPLICATE KEY UPDATE syntax.

http://dev.mysql.com/doc/refman/5.0/en/insert-on-duplicate.html

You will need to have a key defined on the table of types UNIQUE or PRIMARY KEY.

Answer 2

read this url

http://dev.mysql.com/doc/refman/5.0/en/insert-on-duplicate.html

check the database emailformname and leadname are unique

Answer 3

There is also REPLACE.

Which will update the existing row or will create a new one if it doesn't exist, also the syntax is similar to INSERT.

It does exactly what INSERT ... ON DUPLICATE KEY UPDATE does, but I think this approach is more elegant.

Answer 4

Yeah, use ON DUPLICATE KEY UPDATE

for that. Here is an example:

INSERT INTO <table> (<field1>, <field2>) VALUES (<value1>, <value2>)
ON DUPLICATE KEY UPDATE <field2> = 'update CONTENT';

important is the primary key (underlined in phpMyAdmin table).