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Minor improvements to the TODO list. Add some URLs for some
2007年1月16日 20:58:38 +0000 (20:58 +0000)
2007年1月16日 20:58:38 +0000 (20:58 +0000)
existing TODO items, and re-add a TODO item for an "estimated
count" capability.


diff --git a/doc/TODO b/doc/TODO
index 1b68a55501db4d9df641984eee647ec283d4c11c..25b8faafaefda7980b068a76badedf23ce90d0ef 100644 (file)
--- 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
=========================
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