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Tom Lane 06af3f9656 Further cleanup of gistsplit.c. ... After further reflection I was unconvinced that the existing coding is guaranteed to return valid union datums in every code path for multi-column indexes. Fix that by forcing a gistunionsubkey() call at the end of the recursion. Having done that, we can remove some clearly-redundant calls elsewhere. This should be a little faster for multi-column indexes (since the previous coding would uselessly do such a call for each column while unwinding the recursion), as well as much harder to break. Also, simplify the handling of cases where one side or the other of a primary split contains only don't-care tuples. The previous coding used a very ugly hack in removeDontCares() that essentially forced one random tuple to be treated as non-don't-care, providing a random initial choice of seed datum for the secondary split. It seems unlikely that that method will give better-than-random splits. Instead, treat such a split as degenerate and just let the next column determine the split, the same way that we handle fully degenerate cases where the two sides produce identical union datums.		13 years ago
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access	Further cleanup of gistsplit.c.	13 years ago
bootstrap	Avoid changing an index's indcheckxmin horizon during REINDEX.	15 years ago
catalog	DROP OWNED: don't try to drop tablespaces/databases	13 years ago
commands	Fix typo in freeze_table_age implementation	13 years ago
executor	Add defenses against integer overflow in dynahash numbuckets calculations.	13 years ago
foreign	deflist_to_tuplestore dumped core on an option with no value.	15 years ago
lib	Update copyright for 2009.	17 years ago
libpq	Produce a more useful error message for over-length Unix socket paths.	13 years ago
main	Update copyright for 2009.	17 years ago
nodes	Fix planning of non-strict equivalence clauses above outer joins.	13 years ago
optimizer	Fix assorted bugs in CREATE INDEX CONCURRENTLY.	13 years ago
parser	Fix grammar for subscripting or field selection from a sub-SELECT result.	13 years ago
po	Translation updates	13 years ago
port	Fix Windows implementation of PGSemaphoreLock.	14 years ago
postmaster	Fix possible failure to send final transaction counts to stats collector.	13 years ago
regex	Prevent corner-case core dump in rfree().	14 years ago
rewrite	Prevent CREATE TABLE LIKE/INHERITS from (mis) copying whole-row Vars.	14 years ago
snowball	Convert cvsignore to gitignore, and add .gitignore for build targets.	16 years ago
storage	Add missing period to detail message.	14 years ago
tcop	set_stack_base() no longer needs to be called in PostgresMain.	14 years ago
tsearch	Fix bug in to_tsquery().	14 years ago
utils	Prevent execution of enum_recv() from SQL.	13 years ago
.gitignore	Convert cvsignore to gitignore, and add .gitignore for build targets.	16 years ago
Makefile	Fix PGXS support for building loadable modules on AIX.	13 years ago
common.mk	Code coverage testing with gcov. Documentation is in the regression test	18 years ago
nls.mk	Translation updates	13 years ago