From da07c81fe3672fdc216b923f7abcde5d23ad0a6a Mon Sep 17 00:00:00 2001 From: Neil Conway Date: Tue, 16 Jan 2007 20:58:38 +0000 Subject: [PATCH] Minor improvements to the TODO list. Add some URLs for some existing TODO items, and re-add a TODO item for an "estimated count" capability. --- doc/TODO | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/doc/TODO b/doc/TODO index 1b68a55501..25b8faafae 100644 --- a/doc/TODO +++ b/doc/TODO @@ -341,7 +341,7 @@ Functions * Add ISO day of week format 'ID' to to_char() where Monday = 1 * Add a field 'isoyear' to extract(), based on the ISO week * Add SPI_gettypmod() to return the typemod for a TupleDesc -* Allow inlining of set-returning functions +* Implement inlining of set-returning functions defined in SQL * Allow SQL-language functions to return results from RETURNING queries @@ -928,6 +928,8 @@ Indexes several hash buckets could be stored on a single page and greater granularity used for the hash algorithm. + http://archives.postgresql.org/pgsql-hackers/2004-06/msg00168.php + o Consider sorting hash buckets so entries can be found using a binary search, rather than a linear scan @@ -972,6 +974,13 @@ Cache Usage faster than a sequential scan it must avoid access to the heap to obtain tuple visibility information. +* Provide a way to calculate an "estimated COUNT(*)" + + Perhaps by using the optimizer's cardinality estimates or random + sampling. + + http://archives.postgresql.org/pgsql-hackers/2005-11/msg00943.php + * Allow data to be pulled directly from indexes Currently indexes do not have enough tuple visibility information @@ -1075,6 +1084,9 @@ Locking * Fix priority ordering of read and write light-weight locks (Neil) + http://archives.postgresql.org/pgsql-hackers/2004-11/msg00893.php + http://archives.postgresql.org/pgsql-hackers/2004-11/msg00905.php + Startup Time Improvements ========================= -- 2.40.0