You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

Tom Lane 964c0d0f80 Prevent pushing down WHERE clauses into unsafe UNION/INTERSECT nests. ... The planner is aware that it mustn't push down upper-level quals into subqueries if the quals reference subquery output columns that contain set-returning functions or volatile functions, or are non-DISTINCT outputs of a DISTINCT ON subquery. However, it missed making this check when there were one or more levels of UNION or INTERSECT above the dangerous expression. This could lead to "set-valued function called in context that cannot accept a set" errors, as seen in bug #8213 from Eric Soroos, or to silently wrong answers in the other cases. To fix, refactor the checks so that we make the column-is-unsafe checks during subquery_is_pushdown_safe(), which already has to recursively inspect all arms of a set-operation tree. This makes qual_is_pushdown_safe() considerably simpler, at the cost that we will spend some cycles checking output columns that possibly aren't referenced in any upper qual. But the cases where this code gets executed at all are already nontrivial queries, so it's unlikely anybody will notice any slowdown of planning. This has been broken since commit 05f916e6ad, which makes the bug over ten years old. A bit surprising nobody noticed it before now.		12 years ago
..
backend	Prevent pushing down WHERE clauses into unsafe UNION/INTERSECT nests.	12 years ago
bin	Fix unportable usage of isspace().	12 years ago
common	pgindent run for release 9.3	12 years ago
include	Add ARM64 (aarch64) support to s_lock.h.	12 years ago
interfaces	Additional spelling corrections	12 years ago
makefiles	Blind attempt at fixing the non-MSVC Windows builds	13 years ago
pl	Add semicolons to eval'd strings to hide a minor Perl behavioral change.	12 years ago
port	pgindent run for release 9.3	12 years ago
template	Remove _FORTIFY_SOURCE	13 years ago
test	Prevent pushing down WHERE clauses into unsafe UNION/INTERSECT nests.	12 years ago
timezone	pgindent run for release 9.3	12 years ago
tools	Minor spelling fixes	12 years ago
tutorial	Modernize string literal syntax in tutorial example.	13 years ago
.gitignore	Convert cvsignore to gitignore, and add .gitignore for build targets.	15 years ago
DEVELOPERS	…
Makefile	Create libpgcommon, and move pg_malloc et al to it	13 years ago
Makefile.global.in	Remove whitespace from end of lines	12 years ago
Makefile.shlib	Add pkg-config files for libpq and ecpg libraries	13 years ago
bcc32.mak	Autoconfiscate selection of 64-bit int type for 64-bit large object API.	13 years ago
nls-global.mk	NLS: Use msgmerge --previous option	13 years ago
win32.mak	Autoconfiscate selection of 64-bit int type for 64-bit large object API.	13 years ago