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Why would you do that? To save some bytes in storage?
by echoangle 3mo ago
Why would you do that? To save some bytes in storage?
- chasil 3mo agoThe largest table where I've done this had over 50 of these booleans. That's one 64-bit number, or 50 different columns.
- echoangle 3mo agoBut if you do the function based index, you actually increase the stored size, right? Seems like a microoptimization to me that I would only do if I really have to.
- chasil 3mo agoFor the searched column only? If you are greatly concerned, SQL Server and the Sybase database from which it emerged have a native boolean data type. Another benefit of this scheme is that adding another boolean means using the next power of 2 in the existing integer, assuming room remains. No new column necessary.