that search loops only have to scan that far and not through all maxBackends
entries. This eliminates a performance penalty for setting maxBackends
much higher than the average number of active backends. Also, eliminate
no-longer-used 'backend tag' concept. Remove setting of environment
variables at backend start (except for CYR_RECODE), since none of them
are being examined by the backend any longer.
joins, and clean things up a good deal at the same time. Append plan node
no longer hacks on rangetable at runtime --- instead, all child tables are
given their own RT entries during planning. Concept of multiple target
tables pushed up into execMain, replacing bug-prone implementation within
nodeAppend. Planner now supports generating Append plans for inheritance
sets either at the top of the plan (the old way) or at the bottom. Expanding
at the bottom is appropriate for tables used as sources, since they may
appear inside an outer join; but we must still expand at the top when the
target of an UPDATE or DELETE is an inheritance set, because we actually need
a different targetlist and junkfilter for each target table in that case.
Fortunately a target table can't be inside an outer join... Bizarre mutual
recursion between union_planner and prepunion.c is gone --- in fact,
union_planner doesn't really have much to do with union queries anymore,
so I renamed it grouping_planner.
Define conversions to and from text for date, time, and timetz.
Have millisecond and microsecond return full # of seconds in those units.
Previously, only returned full fractional part in those units.
Fix some quoting functions. In particular handle NULLs better.
Use a method to add primary key information rather than direct
manipulation of the class structures.
Break decimal out in _quote (in pg.py) and treat it as float.
Treat timestamp like date for quoting purposes.
Remove a redundant SELECT from the get method speeding it, and
insert since it calls get, up a little.
Add test for BOOL type in typecast method to pgdbTypeCache class.
(tv@beamnet.de)
Fix pgdb.py to send port as integer to lower level function
(dildog@l0pht.com)
Change pg.py to speed up some operations
Allow updates on tables with no primary keys.
D'Arcy J.M. Cain
edition of the driver did not compile. I have fixed both issues again. I have
attached the modified files to this email, maybe you can check them into the
repository. (Fixes are marked with //FIXME). Enterprise edition driver now
compiles and seems to work.
Jan Thomae
functions, per recent discussions on pghackers. For now, I have called
the verbose-display formatting function text(), but will reconsider if
enough people object.
initdb forced.
message about recursive use of a syscache. Also remove most of the
specialized indexscan routines in indexing.c --- it turns out that
catcache.c is perfectly able to perform the indexscan for itself,
in fact has already looked up all the information needed to do so!
This should be faster as well as needing far less boilerplate code.
but take it as 'int *' instead.
Add real test for whether ld -R works on Unixware.
Rename --enable-uniconv to --enable-unicode-conversion.
Install shlibs mode 755 by default, since 644 causes gratuitous complaints
from ldd et al. on some systems.
that installs into a different path than is configured.
With this applied both postmaster and the shared libs are location
independent
for AIX 4.2 and up.
Thanks
Andreas
(WAL logging for this is not done yet, however.) Clean up a number of really
crufty things that are no longer needed now that DROP behaves nicely. Make
temp table mapper do the right things when drop or rename affecting a temp
table is rolled back. Also, remove "relation modified while in use" error
check, in favor of locking tables at first reference and holding that lock
throughout the statement.
Same code exactly as for function resolution.
An obvious example is for
select '1' = '01';
which used to throw an error and which now resolves to two text strings.
