SQLite3 slow query parsing

I have a long query like this:

SELECT field1, field2, ... FROM tambe WHERE (rowid NOT IN (some 60000 rowids));

The query can be potentially executed multiple times, so I save its results in a temporary table.

CREATE TEMPORARY TABLE IF NOT EXISTS cach开发者_开发百科e AS SELECT field1, field2, ... FROM tambe WHERE (rowid NOT IN (some 60000 rowids));

This way I don't have to select the actual data every time, but it is still quite a bit slower than it could be. I suspect it is the time it takes to parse the query that is slowing it down.

Is there a way to encapsulate the long query in a kind of IF (CASE) statement so that the SQLite parser would completely ignore it?

IF cache NOT EXISTS (...) END IF;

Thanks.

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Selecting by rowid doesn't appear to use an index. Using an expression like id NOT IN (some 60000 ids) almost certainly won't use an index.

I think your best bet is probably going to be doing a select on a candidate key that's indexed. You might get acceptable performance by doing nothing more than that.