is less likely to fail for lack of semaphores.

This change brings the default size of the main shmem block back under 1MB,
which is a fairly popular value for the kernel's SHMMAX parameter.

_copyResult didn't copy subPlan structure completely.  _copyAgg is still
busted, apparently because of changes from EXCEPT/INTERSECT patch
(get_agg_tlist_references is no longer sufficient to find all aggregates).
No time to look at that tonight, however.

so remove them from MergeJoin node.  Hack together a partial
solution for commuted mergejoin operators --- yesterday
a mergejoin int4 = int8 would crash if the planner decided to
commute it, today it works.  The planner's representation of
mergejoins really needs a rewrite though.
Also, further testing of mergejoin ops in opr_sanity regress test.

From: Michael Meskes <Michael_Meskes@topmail.de>

+
+ Tue Feb 23 17:32:25 CET 1999
+
+       - Other than a struct a union itself cannot be specified as variable.
+
+ Fri Feb 26 07:18:25 CET 1999
+
+       - Synced preproc.y with gram.y.
+
+ Sat Feb 27 20:30:03 CET 1999
+
+       - Added automatic allocating for NULL pointers.

right side data types.  Correct the opr_sanity regress test to check these
entries properly.  NOTE that opr_sanity will now fail until you do an initdb!

right sides have different data types.

it seems.

without it.  Sloppy, sloppy.

set of updates to gram.y.

Move files to deadcode.

portability problem. Included patches should be applied to both
current and 6.4 tree. I have tested on LinuxPPC, FreeBSD and Solaris
2.6. Now the inet regression tests on these platforms are all happy.
---
Tatsuo Ishii

From: Michael Meskes <Michael_Meskes@topmail.de>

+
+ Son Feb 21 14:10:47 CET 1999
+
+       - Fixed variable detection in libecpg.
+
+ Mon Feb 22 19:47:45 CET 1999
+
+       - Added 'at <db_connection>' option to all commands it is apllicable
+         to. Due to changing the API of some libecpg functions this
+         requires me to increase the major version number.
+       - Synced pgc.l with scan.l.
+       - Added support for unions.
+       - Set library version to 3.0.0
+       - Set ecpg version to 3.0.0

Define the JoinExpr node.

Clean up comments in execnodes.h.

 when no exact match.
Clean up elog error messages.

 including the following in your Makefile.custom:
 CFLAGS+= -DENABLE_OUTER_JOINS -DEXEC_MERGEJOINDEBUG

Put in hooks for outer joins by passing a few parameters back and forth
 in function calls. May not be close to working yet.

 code. Works here, but not completely implemented past this point.

Comment-out the #undef default declarations to allow the parameters to be
 set on the compiler command line.

Enable by defining
 CFLAGS+= -DENABLE_OUTER_JOINS -DEXEC_MERGEJOINDEBUG
in your Makefile.custom

 string.

 file early enough to use in nodes/.
Try to be more complete for rules on generating parse.h,
 but it still does not work any better than before. Should be able to
 make correctly if parser/gram.y is updated even without a "make clean"
 but so far not there yet.