MYSQL更新（如果存在或插入）

Question

I have been trying to get the following SQL to work however it seems to skip the insert function. Essentially updating should take priority as most of the time it should fire.

UPDATE `teams-tasks`
        SET status=(:s), name=(:n), description=(:d), importance=(:i), applies=(:a) 
        WHERE teamId =(:t) AND date=(:da) AND playerId =(:p) AND creatorId =(:c);
        IF (SELECT ROW_COUNT() = 0);                    
        INSERT INTO `teams-tasks`
            ( status, date, creatorId, teamId, playerId, name, description, importance, applies ) 
        VALUES 
            ( (:s), (:da), (:c), (:t), (:p), (:n), (:d), (:i), (:a) ))

what am i doing wrong? i am using php pdo for my database connection if it matters

thanks

Answer 1

User replace into query which makes sure if the row exists it will update the data, if row does not exists it will insert the date.

to check the duplicate entry it compares the primary key internally

eg

REPLACE INTO table_name(column_name1,column_name2,…)
VALUES(value1,value2,…)

eg

REPLACE INTO offices(officecode,city)
VALUES(8,'San Jose')

Thanks Amit

Answer 2

You should use INSERT ... ON DUPLICATE KEY UPDATE

For example

INSERT INTO AggregatedData (datenum,Timestamp)
VALUES ("734152.979166667","2010-01-14 23:30:00.000")
ON DUPLICATE KEY UPDATE 
  Timestamp=VALUES(Timestamp)