a ".pgc " extension. The second patch fixes a coredump when there is
more than one input file (in that case, cur and types were not set to
NULL before processing the second f ile)
The patch below modifies the accepted grammar of ecpg to accept
FETCH [direction] [amount] cursor name
i.e. the IN|FROM clause becomes optional (as in Oracle and Informix).
This removes the incompatibility mentioned in section "Porting From
Other RDBMS Packages" p169, PostgreSQL Programmer's Guide. The grammar
is modified in such a way as to avoid shift/reduce conflicts. It does
not accept the statement "EXEC SQL FETCH;" anymore, as the old grammar
did (this seems to be a bug of the old grammar anyway).
This patch cleans up the handling of space characters in the scanner;
some patte rns require \n to be in {space}, some do not. A second fix is
the handling of cpp continuati on lines; the old pattern did not match
these. The parser is patched to fix an off-by-one error in the #line
directives. The pa rser is also enhanced to report the correct location
of errors in declarations in the "E XEC SQL DECLARE SECTION". Finally,
some right recursions in the parser were replaced by left-recursions.
This patch adds preprocessor directives to ecpg; in particular
EXEC SQL IFDEF, EXEC SQL IFNDEF, EXEC SQL ELSE, EXEC SQL ELIF and EXEC SQL ENDIF
"EXEC SQL IFDEF" is used with defines made with "EXEC SQL DEFINE" and
defines, specified on the command line with -D. Defines, specified on
the command line are persistent across multiple input files. Defines can
be nested up to a maximum level of 128 (see patch). There is a fair
amount of error checking to make sure directives are matched properly. I
need preprocessor directives for porting code, that is written for an
Informix database, to a PostgreSQL database, while maintaining
compatibility with the original code. I decided not to extend the
already large ecpg grammar. Everything is done in the scanner by adding
some states, e.g. to skip all input except newlines and directives. The
preprocessor commands are compatible with Informix. Oracle uses a cpp
replacement.
Rene Hogendoorn
eliminating some wildly inconsistent coding in various parts of the
system. I set MAXPGPATH = 1024 in config.h.in. If anyone is really
convinced that there ought to be a configure-time test to set the
value, go right ahead ... but I think it's a waste of time.
fix recently applied to backend's lexer). I see that YY_USES_REJECT
still gets defined for this lexer, which means it's going to have trouble
parsing really long tokens. Not sure if it's worth doing anything about
that or not; I don't have the interest right now to understand why
ecpg's additions to the syntax cause this problem...
functions. One problem that I have encountered with the function
manager is that it does not allow the user to define type conversion
functions that convert between user types. For instance if mytype1,
mytype2, and mytype3 are three Postgresql user types, and if I wish to
define Postgresql conversion functions like
I run into problems, because the Postgresql dynamic loader would look
for a single link symbol, mytype3, for both pieces of object code. If
I just change the name of one of the Postgresql functions (to make the
symbols distinct), the automatic type conversion that Postgresql uses,
for example, when matching operators to arguments no longer finds the
type conversion function.
The solution that I propose, and have implemented in the attatched
patch extends the CREATE FUNCTION syntax as follows. In the first case
above I use the link symbol mytype2_to_mytype3 for the link object
that implements the first conversion function, and define the
Postgresql operator with the following syntax
The patch includes changes to the parser to include the altered
syntax, changes to the ProcedureStmt node in nodes/parsenodes.h,
changes to commands/define.c to handle the extra information in the AS
clause, and changes to utils/fmgr/dfmgr.c that alter the way that the
dynamic loader figures out what link symbol to use. I store the
string for the link symbol in the prosrc text attribute of the pg_proc
table which is currently unused in rows that reference dynamically
loaded
functions.
Bernie Frankpitt
the ecpg Makefiles use a variable DESTDIR which is never defined
except by debian/rules makefile, in which case the ecpg makefiles
expand wrong pathnames. If we want to support a DESTDIR root it
must be done consistently in all the makefiles, not just in ecpg.
From: Massimo Dal Zotto <dz@cs.unitn.it>
been applied. The patches are in the .tar.gz attachment at the end:
varchar-array.patch this patch adds support for arrays of bpchar() and
varchar(), which where always missing from postgres.
These datatypes can be used to replace the _char4,
_char8, etc., which were dropped some time ago.
block-size.patch this patch fixes many errors in the parser and other
program which happen with very large query statements
(> 8K) when using a page size larger than 8192.
This patch is needed if you want to submit queries
larger than 8K. Postgres supports tuples up to 32K
but you can't insert them because you can't submit
queries larger than 8K. My patch fixes this problem.
The patch also replaces all the occurrences of `8192'
and `1<<13' in the sources with the proper constants
defined in include files. You should now never find
8192 hardwired in C code, just to make code clearer.
--
Massimo Dal Zotto
+
+ 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.
+
+ 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
+
+ Wed Jan 27 12:42:22 CET 1999
+
+ - Fixed bug that caused ecpg to lose 'goto' information.
+ - Set ecpg version to 2.4.7
+
+ Fri Jan 29 18:03:52 CET 1999
+
+ - Fixed bug that caused 'enum' to be rejected in pure C code.
+ - Fixed bug that caused function names to be translated to lower case.
+ - Set ecpg version to 2.4.8
+
remaining shift/reduce conflict. But the very same conflict is in gram.y, so
I don't dig into it very much now.
Anyway, I just saw that there were minor changes made to ecpg by others. Now
I like that but I would prefer if I was told about that. Otherwise my
version numbering and Changelog maintaining might break. Or simply change
these too. :-)
Also I had to add #include <errno.h> to backend/libpq/pqcomprim.c to be
able to compile postgresql.
Patch is attached. Since my resubscription process is still not finished
yet, I still send them here.
Michael
+
+Wed Dec 9 11:24:54 MEZ 1998
+
+ - Synced preproc.y with gram.y and the keywords.c files to add CASE
+ statement.
+
+Tue Dec 22 14:16:11 CET 1998
+
+ - Synced preproc.y with gram.y for locking statements.
+ - Set version to 2.4.5
Check strdup calls for out of memory.
Set library version to 2.6.2
Synced preproc.y and keywords.c with gram.y and keywords.c yet again.
Set version to 2.4.3
+ Mon Aug 31 09:40:04 CEST 1998
+
+ - Minor patch to Makefile
+ - Put pgc.l in sync with scan.l
+
+ Tue Sep 1 11:31:05 CEST 1998
+
+ - Fixed another bug in preproc.y
+
+ Thu Sep 3 12:21:16 CEST 1998
+
+ - Sync preproc.y with gram.y
+
+ Mon Sep 14 09:21:02 CEST 1998
+
+ - Sync preproc.y with gram.y yet again
+
+ Thu Sep 17 08:55:33 CEST 1998
+
+ - Synced preproc.y and gram.y one more time
+
+ Thu Sep 17 19:23:24 CEST 1998
+
+ - Added missing ´;´ in preproc.y
+ - Set version to 2.4.2
This one is against the current archive (so it contains the one I send the
other day). It should fix the AIX problems. Andreas, could you please try
it? Thanks.
+ Wed Aug 26 16:17:39 CEST 1998
+
+ - Sync preproc.y with gram.y
+
+ Thu Aug 27 15:32:23 CEST 1998
+
+ - Fix some minor glitches that the AIX compiler complains about
+ - Added patchlevel to library
+
+ Fri Aug 28 15:36:58 CEST 1998
+
+ - Removed one line of code that AIX complains about since it was not
+ needed anyway
+ - Set library version to 2.6.1
> these patches define the UNLISTEN sql command. The code already
> existed but it was unknown to the parser. Now it can be used
> like the listen command.
> You must make clean and delete gram.c and parser.h before make.
+
+ Fri Aug 14 12:44:21 CEST 1998
+
+ - Added EXEC SQL DEFINE statement
+ - Set version to 2.4.0
+
+ Tue Aug 18 09:24:15 CEST 1998
+
+ - Removed keyword IS from DEFINE statement
+ - Added latest changes from gram.y
+ - Removed duplicate symbols from preproc.y
+ - Initialize sqlca structure
+ - Added check for connection to ecpglib
+ - Set version to 2.4.1
+
+ Thu Aug 20 15:31:29 CEST 1998
+
+ - Cleaned up memory allocation in ecpglib.c
+ - Set library version to 2.6
+
no longer returns buffer pointer, can be gotten from scan;
descriptor; bootstrap can create multi-key indexes;
pg_procname index now is multi-key index; oidint2, oidint4, oidname
are gone (must be removed from regression tests); use System Cache
rather than sequential scan in many places; heap_modifytuple no
longer takes buffer parameter; remove unused buffer parameter in
a few other functions; oid8 is not index-able; remove some use of
single-character variable names; cleanup Buffer variables usage
and scan descriptor looping; cleaned up allocation and freeing of
tuples; 18k lines of diff;
+ Thu Jul 2 20:30:14 CEST 1998
+
+ - Changed new style db name to allow connection types "tcp" and
+ "unix" only
+
+ Tue Jul 7 15:14:14 CEST 1998
+
+ - Fixed some bugs in preproc.y
+ - Set version to 2.3.4
+ Wed Jun 3 13:38:57 CEST 1998
+
+ - Made sqlca struct compatible with other systems.
+ - Give back a warning in case of truncation
+ - Changed the handling of OptimizableStmt since the old one broke
+ CREATE RULE
+ - Set library version to 2.3
+ - Set version to 2.3.3
+Wed May 20 10:46:48 CEST 1998
+
+ - Fixed handling of preprocessor directives and variable
+ initialization.
+ - Added enum datatype.
- Set version to 2.3.2
+
+ Wed May 6 16:09:45 CEST 1998
+
+ - Some more cleanups in the library.
+
+ Thu May 7 12:34:28 CEST 1998
+
+ - Made CONNECT and DISCONNECT statement more SQL3 compliant.
+ - Changed the API for the ECPGconnect function to be able to handle
+ hostnames and ports
+
+ Fri May 8 13:54:45 CEST 1998
+ - More changes to the parser. The connect statement now allows
+ ORACLE style logins.
+ - db-name is accepted in two ways:
+ - <dbname>[@<server>][:<port>]
+ - esql:postgresql://<server>[:<port>][/<dbname>]
+
+ Mon May 11 10:28:37 CEST 1998
+
+ - Added '? options' to connect call.
+ - Also allow USING as keyword for the password
+
+ Thu May 14 15:09:58 CEST 1998
+
+ - Changed preproc.y and pgc.l according to the parser changes in the
+ backend.
+
+ Fri May 15 09:55:21 CEST 1998
+
+ - Added connection_name handling
+
+
+ Mon May 18 10:33:58 CEST 1998
+
+ - Fixed some more bugs
+ - Set version to 2.3.1
+ - Set library version to 2.2
Tue Apr 28 14:48:41 CEST 1998
- Put operator "->" back into parser. Note that :foo->bar means the
C term, but :foo ->bar means the operator "->".
Tue Apr 28 15:49:07 CEST 1998
- Added exec sql disconnect command.
- Allow varchar in C to be written in uppercase too.
- Added whenever option "do break;"
Wed Apr 29 09:17:53 CEST 1998
- Corrected parsing of C comments.
- Also allow C++ style comments.
- Make sure not found is only checked after commands that could
return it.
- Added error codes, see ecpgerror.h for details.
- Added "exec sql <TransactionStmt> release" as disconnect statement
for compatibility issues.
Thu Apr 30 10:42:10 CEST 1998
- Added a -t option to disable automatic transaction start.
- Added sqlerrd[] to sqlca struct.
- Give back number of tuples affect in sqlca.sqlerrd[2].
Thu Apr 30 13:36:02 CEST 1998
- Make the return code different in case of different errors.
Wed May 6 11:42:48 CEST 1998
- Free memory if possible
- Some bugfixes for bugs I found while changing the memory
allocation code
- Now able to fill complete array with one call (see test1.pgc for
an example)
- Set version to 2.3.0
- Set library version to 2.1
Michael Meskes
Tom Lane
Bruce Momjian
Marc G. Fournier
Thomas G. Lockhart