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> * Use bitmaps to fetch heap pages in sequential order [performance]
> * Use bitmaps to combine existing indexes [performance]
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Bruce Momjian 2002-08-13 04:32:28 +00:00
parent 282a5884de
commit b6d8df67d3
1 changed files with 3 additions and 2 deletions
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@ -1,6 +1,6 @@
TODO list for PostgreSQL TODO list for PostgreSQL
======================== ========================
Last updated: Thu Aug 8 19:50:27 EDT 2002 Last updated: Tue Aug 13 00:32:10 EDT 2002
Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us) Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us)
@ -159,7 +159,8 @@ Indexes
* Be smarter about insertion of already-ordered data into btree index * Be smarter about insertion of already-ordered data into btree index
* -Add deleted bit to index tuples to reduce heap access * -Add deleted bit to index tuples to reduce heap access
* Prevent index uniqueness checks when UPDATE does not modifying column * Prevent index uniqueness checks when UPDATE does not modifying column
* Add bitmap indexes [performance] * Use bitmaps to fetch heap pages in sequential order [performance]
* Use bitmaps to combine existing indexes [performance]
* Improve handling of index scans for NULL * Improve handling of index scans for NULL
* Allow SELECT * FROM tab WHERE int2col = 4 to use int2col index, int8, * Allow SELECT * FROM tab WHERE int2col = 4 to use int2col index, int8,
float4, numeric/decimal too [optimizer] float4, numeric/decimal too [optimizer]