In the 4.0.17 and later build, the target table of an INSERT...SELECT can be the same as the SELECT table (insert into table1...select ...from table1).
Does the process essentially happen in a natural lock? In other words, could the table change between the data retrieved in the select and the time the insert gets executed? We used to use something like this: Lock tables table1 write; Select @a:=max(column) from table1; Insert into table1 (column) values (@a+1); Unlock tables; Could that now be done as: Insert into table1 (column) select max(column)+1 from table1; -Allon -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
