Re: [SQL] idiom to move records?

>
> 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.

    Use a transaction and lock the source table first.

        BEGIN TRANSACTION;
        LOCK TABLE src_table;
        INSERT INTO dest_table SELECT * FROM src_table
               WHERE ...;
        DELETE FROM src_table WHERE ...;
        COMMIT TRANSACTION;

    No  other  backend  can add, modify or remove rows to/in/from
    src_table while you have a lock on it.


Jan

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