Tom Lane 80860c32d9 Improve dynahash.c's API so that caller can specify the comparison function ... as well as the hash function (formerly the comparison function was hardwired as memcmp()). This makes it possible to eliminate the special-purpose hashtable management code in execGrouping.c in favor of using dynahash to manage tuple hashtables; which is a win because dynahash knows how to expand a hashtable when the original size estimate was too small, whereas the special-purpose code was too stupid to do that. (See recent gripe from Stephan Szabo about poor performance when hash table size estimate is way off.) Free side benefit: when using string_hash, the default comparison function is now strncmp() instead of memcmp(). This should eliminate some part of the overhead associated with larger NAMEDATALEN values.		2003-08-19 01:13:41 +00:00
..
dynahash.c	Improve dynahash.c's API so that caller can specify the comparison function	2003-08-19 01:13:41 +00:00
hashfn.c	Improve dynahash.c's API so that caller can specify the comparison function	2003-08-19 01:13:41 +00:00
Makefile	XLOG (and related) changes:	2001-03-13 01:17:06 +00:00
pg_crc.c	Update copyrights to 2003.	2003-08-04 02:40:20 +00:00