Update On Key Duplicate

On duplicate key update inserts or updates a row, the last_insert_id() function returns the auto_increment value. the on duplicate key update clause can contain multiple column assignments, separated by commas.. On duplicate key update is a mariadb/mysql extension to the insert statement that, if it finds a duplicate unique or primary key, will instead perform an update. the row/s affected value is reported as 1 if a row is inserted, and 2 if a row is updated, unless the api's client_found_rows flag is set.. Conditional duplicate key updates with mysql. in one of our larger rails apps the sheer volume of data we process means we’ve had to rely more and more on direct sql queries, denormalised tables and summary tables to speed things up..

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Anyway to pull off an on duplicate key update for an insert statement with mysql ? couldn't find anything documentation or search wise.. On duplicate key update syntax: if you specify on duplicate key update, and a row is inserted that would cause a duplicate value in a unique index or primary key, mysql performs an update of the. It means that all code after on duplicate key update won't be executed. for instance in our example when we don't have such values in database, after this query we will have row with article_id = 12 and views_count = 1 (not 2)..

update on key duplicate

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