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All the Perl that's Practical to Extract and Report

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  • One of the main ways to use this in MS-SQL is to create a temp table, insert a bunch of things into it (in a way that you couldn't easily do with one statement) and then return the recordset of the temp table.

    Unfortunately temp tables have long been broken in Pg functions, because the function caches the table-id even for temp tables (it can't distinguish between temp and non-temp tables) and tries to re-use the old table-id next time around. Of course things break then because the table doesn't exist any
  • Someone on IRC pointed out to me that there's a TechDocs article, Set Returning Functions [postgresql.org] that seems to cover the issue pretty well.

    --David