truncate table item
go
insert item
select *
from item_tmp
go
This works, but I have to take the production system down to use this. I was hoping to use a cursor and delete a row, then insert the corresponding
row from the temp table so that only that item would be locked and I
wouldn't have to take the production system down. In Oracle, I can declare a cursor and define a cursor record using the
cursor_name%ROWTYPE, then I can delete the item in the production table and insert
the current value of the cusor record. Sybase will only let you do updates
and deletes with a cursor, no inserts. I also don't want to define each
column from the table in the cursor, there are close to 100 columns in the
table.
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Actually I do not think this is the best way of dealing with this issue.
If you want effectively to use the test table "item" data as the production table all you need is to create a proxy table in production which will be the test table itself. In that case whatever happens to test table data (insert/update/delete) all will be reflected in the production real time. To clarify this point, the user will use the proxy "item" table in production which in reality will be your test table. This will avoid the issue of using cursors, etc., which are inefficient in both Sybase and Oracle. If you need more info please come back.
This was first published in November 2003
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