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Bruce Momjian 2001-11-27 20:25:45 +00:00
parent 7d21a98a56
commit c7caa796d0
4 changed files with 24 additions and 4258 deletions
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25
doc/FAQ
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@ -1,7 +1,7 @@
Frequently Asked Questions (FAQ) for PostgreSQL
Last updated: Mon Nov 12 02:38:47 EST 2001
Last updated: Tue Nov 27 14:16:49 EST 2001
Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us)
@ -28,6 +28,7 @@
1.12) How do I join the development team?
1.13) How do I submit a bug report?
1.14) How does PostgreSQL compare to other DBMS's?
1.14) How can I financially assist PostgreSQL?
User Client Questions
@ -358,6 +359,28 @@
We are free for all use, both commercial and non-commercial.
You can add our code to your product with no limitations,
except those outlined in our BSD-style license stated above.
1.13) How can I financially assist PostgreSQL?
PostgreSQL has had a first-class infrastructure since we started five
years ago. This is all thanks to Marc Fournier, who has created and
managed this infrastructure over the years.
Quality infrastructure is very important to an open-source project. It
prevents disruptions that can greatly delay forward movement of the
project.
Of course, this infrastructure is not cheap. There are a variety of
monthly and one-time expenses that are required to keep it going. If
you or your company has money it can donate to help fund this effort,
please go to the following URL and make a donation:
http://www.pgsql.com/pg_goodies
Although the web page mentions PostgreSQL, Inc, the "contributions"
item is solely to support the PostgreSQL project and does not fund any
specific company. If you prefer, you can also send a check to the
contact address.
_________________________________________________________________
User Client Questions

56
doc/TODO.detail/atttypmod
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@ -1,56 +0,0 @@
From tgl@sss.pgh.pa.us Sun May 23 12:32:34 1999
Received: from sss.sss.pgh.pa.us (sss.pgh.pa.us [206.210.65.6])
by candle.pha.pa.us (8.9.0/8.9.0) with ESMTP id MAA23977
for <maillist@candle.pha.pa.us>; Sun, 23 May 1999 12:32:33 -0400 (EDT)
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Sun, 23 May 1999 12:32:01 -0400 (EDT)
To: Bruce Momjian <maillist@candle.pha.pa.us>
cc: PostgreSQL-development <pgsql-hackers@postgreSQL.org>
Subject: Re: [HACKERS] DEFAULT fixed
In-reply-to: Your message of Sat, 22 May 1999 21:12:19 -0400 (EDT)
<199905230112.VAA13489@candle.pha.pa.us>
Date: Sun, 23 May 1999 12:32:01 -0400
Message-ID: <19923.927477121@sss.pgh.pa.us>
From: Tom Lane <tgl@sss.pgh.pa.us>
Status: ROr
Bruce Momjian <maillist@candle.pha.pa.us> writes:
>> It might be best to just bite the bullet and make the parser carry
>> around both the type's OID and typmod at all times.
> I will try to add it, but I must not that there are some cases where I
> don't have access to the atttypmod of the result, so it may not be
> possible to do it in every case. Perhaps I should just leave this for
> post 6.5, because we don't have any other bug reports on it.
After further thought, I think this may be a more difficult and subtle
issue than we've realized. In the current state of the system, there
are many places where you have a value that you can only know the type
OID for, not atttypmod --- specifically, any intermediate expression
result. Barring reworking the entire function-call mechanism to pass
atttypmod around, that's not going to be possible to change.
The only context where you really know atttypmod is where you have
just fetched a value out of a table column or are about to store a
value into a table column. When storing, you need to be prepared to
coerce the given value to the right type if *either* type OID or
atttypmod is different --- but, in general, you don't know atttypmod
for the given value. (In the cases I know of, you can deduce it by
examining the value itself, but this requires type-specific knowledge.)
So on the whole I think this is something that has to be dealt with
at the point of storing data into a tuple. Maybe we need a new
fundamental operation for types that pay attention to atttypmod:
"make this value match the typmod of the target column, which is
thus-and-so". Trying to attack the problem from the source side by
propagating typmod all around the parser is probably doomed to failure,
because there will be many contexts where there's no way to know it.
Since you have a fix for the only symptom reported to date, I'm
inclined to agree that we should leave well enough alone for now;
there are other, bigger, problems that we need to address for 6.5.
But I think we'll have to come back to this issue later.
regards, tom lane

3961
doc/TODO.detail/elog
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240
doc/TODO.detail/tcl_arrays
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From owner-pgsql-patches@hub.org Wed Oct 14 17:31:26 1998
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From: Massimo Dal Zotto <dz@cs.unitn.it>
Message-Id: <199810142056.WAA00489@nikita.wizard.net>
Subject: [PATCHES] TCL_ARRAYS
To: pgsql-patches@postgreSQL.org (Pgsql Patches)
Date: Wed, 14 Oct 1998 22:56:58 +0200 (MET DST)
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Status: RO
Hi,
I have written this patch which fixes some problems with TCL_ARRAYS.
The new array code uses a temporary buffer and is disabled by default
because it depends on contrib/string-io which most of you don't use.
This raises once again the problem of backslashes/escapes and various
ambiguities in pgsql output. I hope this will be solved in 6.5.
*** src/interfaces/libpgtcl/pgtclCmds.c.orig Mon Sep 21 09:00:19 1998
--- src/interfaces/libpgtcl/pgtclCmds.c Wed Oct 14 15:32:21 1998
***************
*** 602,616 ****
{
for (i = 0; i < PQnfields(result); i++)
{
sprintf(nameBuffer, "%d,%.200s", tupno, PQfname(result, i));
if (Tcl_SetVar2(interp, arrVar, nameBuffer,
! #ifdef TCL_ARRAYS
! tcl_value(PQgetvalue(result, tupno, i)),
#else
PQgetvalue(result, tupno, i),
- #endif
TCL_LEAVE_ERR_MSG) == NULL)
return TCL_ERROR;
}
}
Tcl_AppendResult(interp, arrVar, 0);
--- 602,624 ----
{
for (i = 0; i < PQnfields(result); i++)
{
+ #ifdef TCL_ARRAYS
+ char *buff = strdup(PQgetvalue(result, tupno, i));
sprintf(nameBuffer, "%d,%.200s", tupno, PQfname(result, i));
if (Tcl_SetVar2(interp, arrVar, nameBuffer,
! tcl_value(buff),
! TCL_LEAVE_ERR_MSG) == NULL) {
! free(buff);
! return TCL_ERROR;
! }
! free(buff);
#else
+ sprintf(nameBuffer, "%d,%.200s", tupno, PQfname(result, i));
+ if (Tcl_SetVar2(interp, arrVar, nameBuffer,
PQgetvalue(result, tupno, i),
TCL_LEAVE_ERR_MSG) == NULL)
return TCL_ERROR;
+ #endif
}
}
Tcl_AppendResult(interp, arrVar, 0);
***************
*** 636,643 ****
*/
for (tupno = 0; tupno < PQntuples(result); tupno++)
{
const char *field0 = PQgetvalue(result, tupno, 0);
! char * workspace = malloc(strlen(field0) + strlen(appendstr) + 210);
for (i = 1; i < PQnfields(result); i++)
{
--- 644,674 ----
*/
for (tupno = 0; tupno < PQntuples(result); tupno++)
{
+ #ifdef TCL_ARRAYS
+ char *buff = strdup(PQgetvalue(result, tupno, 0));
+ const char *field0 = tcl_value(buff);
+ char *workspace = malloc(strlen(field0) + 210 + strlen(appendstr));
+
+ for (i = 1; i < PQnfields(result); i++)
+ {
+ free(buff);
+ buff = strdup(PQgetvalue(result, tupno, i));
+ sprintf(workspace, "%s,%.200s%s", field0, PQfname(result,i),
+ appendstr);
+ if (Tcl_SetVar2(interp, arrVar, workspace,
+ tcl_value(buff),
+ TCL_LEAVE_ERR_MSG) == NULL)
+ {
+ free(buff);
+ free(workspace);
+ return TCL_ERROR;
+ }
+ }
+ free(buff);
+ free(workspace);
+ #else
const char *field0 = PQgetvalue(result, tupno, 0);
! char *workspace = malloc(strlen(field0) + 210 + strlen(appendstr));
for (i = 1; i < PQnfields(result); i++)
{
***************
*** 652,657 ****
--- 683,689 ----
}
}
free(workspace);
+ #endif
}
Tcl_AppendResult(interp, arrVar, 0);
return TCL_OK;
***************
*** 669,676 ****
--- 701,716 ----
Tcl_AppendResult(interp, "argument to getTuple cannot exceed number of tuples - 1", 0);
return TCL_ERROR;
}
+ #ifdef TCL_ARRAYS
+ for (i = 0; i < PQnfields(result); i++) {
+ char *buff = strdup(PQgetvalue(result, tupno, i));
+ Tcl_AppendElement(interp, tcl_value(buff));
+ free(buff);
+ }
+ #else
for (i = 0; i < PQnfields(result); i++)
Tcl_AppendElement(interp, PQgetvalue(result, tupno, i));
+ #endif
return TCL_OK;
}
else if (strcmp(opt, "-tupleArray") == 0)
***************
*** 688,697 ****
--- 728,748 ----
}
for (i = 0; i < PQnfields(result); i++)
{
+ #ifdef TCL_ARRAYS
+ char *buff = strdup(PQgetvalue(result, tupno, i));
+ if (Tcl_SetVar2(interp, argv[4], PQfname(result, i),
+ tcl_value(buff),
+ TCL_LEAVE_ERR_MSG) == NULL) {
+ free(buff);
+ return TCL_ERROR;
+ }
+ free(buff);
+ #else
if (Tcl_SetVar2(interp, argv[4], PQfname(result, i),
PQgetvalue(result, tupno, i),
TCL_LEAVE_ERR_MSG) == NULL)
return TCL_ERROR;
+ #endif
}
return TCL_OK;
}
***************
*** 1303,1310 ****
sprintf(buffer, "%d", tupno);
Tcl_SetVar2(interp, argv[3], ".tupno", buffer, 0);
for (column = 0; column < ncols; column++)
! Tcl_SetVar2(interp, argv[3], info[column].cname, PQgetvalue(result, tupno, column), 0);
Tcl_SetVar2(interp, argv[3], ".command", "update", 0);
--- 1354,1371 ----
sprintf(buffer, "%d", tupno);
Tcl_SetVar2(interp, argv[3], ".tupno", buffer, 0);
+ #ifdef TCL_ARRAYS
+ for (column = 0; column < ncols; column++) {
+ char *buff = strdup(PQgetvalue(result, tupno, column));
+ Tcl_SetVar2(interp, argv[3], info[column].cname,
+ tcl_value(buff), 0);
+ free(buff);
+ }
+ #else
for (column = 0; column < ncols; column++)
! Tcl_SetVar2(interp, argv[3], info[column].cname,
! PQgetvalue(result, tupno, column), 0);
! #endif
Tcl_SetVar2(interp, argv[3], ".command", "update", 0);
*** src/include/config.h.in.orig Wed Aug 26 09:01:16 1998
--- src/include/config.h.in Wed Oct 14 22:44:00 1998
***************
*** 312,318 ****
* of postgres C-like arrays, for example {{"a1" "a2"} {"b1" "b2"}} instead
* of {{"a1","a2"},{"b1","b2"}}.
*/
! #define TCL_ARRAYS
/*
* The following flag allows limiting the number of rows returned by a query.
--- 312,318 ----
* of postgres C-like arrays, for example {{"a1" "a2"} {"b1" "b2"}} instead
* of {{"a1","a2"},{"b1","b2"}}.
*/
! /* #define TCL_ARRAYS */
/*
* The following flag allows limiting the number of rows returned by a query.
--
Massimo Dal Zotto
+----------------------------------------------------------------------+
| Massimo Dal Zotto email: dz@cs.unitn.it |
| Via Marconi, 141 phone: ++39-461-534251 |
| 38057 Pergine Valsugana (TN) www: http://www.cs.unitn.it/~dz/ |
| Italy pgp: finger dz@tango.cs.unitn.it |
+----------------------------------------------------------------------+