Re: When indexing is needed for a temp table

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On Fri, 2025-04-25 at 09:43 -0700, Bo Guo wrote:
> When creating a temporary table for additional sql operations in a stored function,
> should I worry about building indexes on the temp table to increase performance when
> the temp table's row count exceeds a certain threshold?  If so, is there a rule of
> thumb for the row count threshold?  

Well, if a table is small, you don't need an index.  It is hard to say what is small.
For one, it depends on the size of the rows.

In general, I would say that it never pays to build an index on a temporary table
unless you are using that index at least twice.

Yours,
Laurenz Albe






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