At 7:31 +0200 on 26/10/98, Leslie Mikesell wrote:
> Is there a handy way to move a set of records to a different
> table in sql? I'd like to do this based on a WHERE clause
> and have it work atomically such that it will not lose new
> records added between the step that copies to the other table
> and deleting the copied records.
Do it in a transaction, then. Assuming that the target table is defined
(not a temporary table you create ad-hoc), you do:
BEGIN TRANSACTION;
LOCK TABLE source_table;
INSERT INTO target_table (col1, col2, col3)
SELECT (expr1, expr2, expr3)
FROM source_table
WHERE <where condition here>;
DELETE FROM source_table
WHERE <where condition here>;
COMMIT;
Herouth
--
Herouth Maoz, Internet developer.
Open University of Israel - Telem project
http://telem.openu.ac.il/~herutma
