Question

If I want to delete as many as 30k rows in a table in TSQL,
I can’t use

delete from myTable where Id in (1,2,3,...,30k)

because the number of IDs in the IN clause is too big, according to this article http://support.microsoft.com/kb/288095

But how can I rewrite my query to delete the rows using a temporary table and table joins?

EDIT: The IDs are not in order. They are picked by certain logic so they are just some arbitrary IDs in myTable.

Answer 1

SELECT DISTINCT ID
INTO #tmpIDs
FROM tbl_IDTable
WHERE ID BETWEEN 1 AND 30000

DELETE MYTABLE 
FROM MYTABLE t
INNER JOIN #tmpIDs d ON d.id = t.id

DROP TABLE #tmpIDs

* IF IT IS A QUERY INSIDE ANOTHER QUERY *****

 DELETE MYTABLE 
    FROM MYTABLE t
    INNER JOIN (SELECT DISTINCT ID
                FROM MYTABLE
                WHERE ID BETWEEN 1 AND 30000) d d.id = t.id