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Postgres FD Implementation
Commit c9d70e26 authored by Bruce Momjian's avatar Bruce Momjian
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Mark as done: 

> * -Add new pg_proc cachable settings to specify whether function can be
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TODO list for PostgreSQL TODO list for PostgreSQL
======================== ========================
Last updated: Thu Apr 4 02:12:17 EST 2002 Last updated: Thu Apr 4 22:03:20 EST 2002
Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us) Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us)
...@@ -419,7 +419,7 @@ OPTIMIZER / EXECUTOR ...@@ -419,7 +419,7 @@ OPTIMIZER / EXECUTOR
* Add hash for evaluating GROUP BY aggregates * Add hash for evaluating GROUP BY aggregates
* Nested FULL OUTER JOINs don't work (Tom) * Nested FULL OUTER JOINs don't work (Tom)
* Allow merge and hash joins on expressions not just simple variables (Tom) * Allow merge and hash joins on expressions not just simple variables (Tom)
* Add new pg_proc cachable settings to specify whether function can be * -Add new pg_proc cachable settings to specify whether function can be
evaluated only once or once per query evaluated only once or once per query
* -Change FIXED_CHAR_SEL to 0.20 from 0.04 to give better selectivity (Bruce) * -Change FIXED_CHAR_SEL to 0.20 from 0.04 to give better selectivity (Bruce)
* Make IN/NOT IN have similar performance to EXISTS/NOT EXISTS [exists] * Make IN/NOT IN have similar performance to EXISTS/NOT EXISTS [exists]
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