Re: [HACKERS] Re: Support for %TYPE in CREATE FUNCTION
I've been thinking about this, and I think the smartest way to implement
%TYPE would be to have it as a special-case data type. So, the C
representation of it would be something like this:
struct PercentType {
int datatype;
void *data;
};
Note: I made the datatype field an int, but that may/may not be the
correct datatype to use there.
And basically, postgres can resolve at runtime what it should point to,
and the code should have to deal with it, either via casting, or throwing
an exception if it's unacceptable.
Of course, there'd be a small overhead within the function, but it's a
small price to pay for a robust implementation.
As for operator overloading, a decision must be made whether you search
for a more specific function first, or for a matching %TYPE.
Of course, this may be too many special cases to be coded cleanly...
--
Michael Samuel [EMAIL PROTECTED]
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[HACKERS] bug in pg_dump with GRANT/REVOKE
I'm running postgres 6.5.3 and 7.0.3 and pg_dump gives me the following output: DROP TABLE genrenametable; CREATE TABLE genrenametable ( genreid int4, name character varying(128), parentgenre int4, enabled bool DEFAULT 'f' NOT NULL ); REVOKE ALL on genrenametable from PUBLIC; GRANT SELECT on genrenametable to hammor; GRANT SELECT on genrenametable to johnbr; COPY genrenametable FROM stdin; 411580s Alt Hits4096t 4138New Wave Hits 4096t 411790s Alt Hits4096t ... As you can guess, this will not successfully restore the table. Perhaps the REVOKE/GRANT statements can be moved to after the COPY. The fancy solution would be to make sure the table owner has permissions to do the COPY, and then revoke the permissions afterward if necessary. ---(end of broadcast)--- TIP 4: Don't 'kill -9' the postmaster
[HACKERS] dump+reload?
hello all How can i do dump and reload in all databases? thanks... ---(end of broadcast)--- TIP 3: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly
Re: Fwd: Re: [HACKERS] Shared memory for RH Linux 7.1
On Thu, 24 May 2001, Ryan Mahoney wrote: This is true. You can adjust the value in the /proc/sys/kernel/shmmax file. If you change the value it will be reset when you reboot, so you will need to write a start-up script to always change this value if you want it to be permanent. or you can let sysctl do it with this in /etc/sysctl.conf: kernel.shmmax = 268435456 (obviously changing the value with what is appropriate for your machine). This is for a RH 6.2 box. DOnt know if its the same on 7.1. We switched to FreeBSD between redhat 6.2 and 7.0, so we dont have any RH7.1 boxes laying around. I suspect it hasn't changed though. Mike ---(end of broadcast)--- TIP 5: Have you checked our extensive FAQ? http://www.postgresql.org/users-lounge/docs/faq.html
AW: [HACKERS] Access statistics
One more feature for discussion :-) In the next couple of hours (at least tomorrow) I would be ready to commit the backend changes for table-/index-access statistics and current backend activity views. Should I apply the patches or provide a separate patch for review first? One concern I remember from memory was, that the table names did not conform to the system table semantics of pg_*. (pgstat_*) Have you, or would you change that ? Andreas ---(end of broadcast)--- TIP 1: subscribe and unsubscribe commands go to [EMAIL PROTECTED]
AW: [HACKERS] Re: Support for %TYPE in CREATE FUNCTION
AND expect it to do more than that. So a NOTICE at the actual usage, telling that x%TYPE for y got resolved to basetype z and will currently NOT follow later changes to x should do it. So if you could implement it like that, we will be VERY happy. I also like that approach. Andreas ---(end of broadcast)--- TIP 4: Don't 'kill -9' the postmaster
Re: [HACKERS] ERROR: cache lookup for proc 43030134 failed
Kovacs Zoltan [EMAIL PROTECTED] writes: I think not. The current implementation of LIMIT fetches one more row than is really needed, IIRC. Tom, the real problem is that I get _different_ output for The point is that the problem is probably in the 23rd row of pg_class, not the 22nd. regards, tom lane ---(end of broadcast)--- TIP 6: Have you searched our list archives? http://www.postgresql.org/search.mpl
Re: [HACKERS] Access statistics
Jan Wieck [EMAIL PROTECTED] writes: So outing myself not beeing a *real programmer*, this is what I have so far: Hmm ... what is the performance of all this like? Seems like a lot of overhead. Can it be turned off? * Backends call some collector functions at various places now (these will finally be macros), that count up table scans, tuples returned by scans, buffer fetches/hits and the like. Have you removed the existing stats-gathering support (backend/access/heap/stats.c and so on)? That would buy back at least a few of the cycles involved ... regards, tom lane ---(end of broadcast)--- TIP 5: Have you checked our extensive FAQ? http://www.postgresql.org/users-lounge/docs/faq.html
Re: [HACKERS] Access statistics
Jan Wieck [EMAIL PROTECTED] writes: Tom Lane wrote: Have you removed the existing stats-gathering support (backend/access/heap/stats.c and so on)? That would buy back at least a few of the cycles involved ... Not sure if we really should. Let's later decide if it's really obsolete. Considering that Bruce long ago ifdef'd out all the code that could actually *do* anything with those stats (like print them), I'd say it's obsolete. In any case, it's too confusing to have two sets of stats-gathering code in there. I vote for getting rid of the old stuff. regards, tom lane ---(end of broadcast)--- TIP 1: subscribe and unsubscribe commands go to [EMAIL PROTECTED]
Re: [HACKERS] Re: Interesting Atricle
I think there is really something weird about the Zend site - I use the current IE on an NT machine, and every page loads, but then I have to wait about 10 additional seconds before IE wakes up and I can click any links or go to a different page. I think it may have something to do with the DHTML menus... but I haven't really looked into it. -r At 09:18 PM 6/1/01 -0400, Bruce Momjian wrote: Thought some people might find this article interesting. http://www.zend.com/zend/art/databases.php The only interesting thing I noticed is how fast it crashes my Netscape-4.76 browser ;) Yours too? I turned off Java/Javascript to get it to load and I am on BSD/OS. Strange it so univerally crashes. -- Bruce Momjian| http://candle.pha.pa.us [EMAIL PROTECTED] | (610) 853-3000 + If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup.| Drexel Hill, Pennsylvania 19026 ---(end of broadcast)--- TIP 6: Have you searched our list archives? http://www.postgresql.org/search.mpl --- Incoming mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.251 / Virus Database: 124 - Release Date: 4/26/01 --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.251 / Virus Database: 124 - Release Date: 4/26/01 ---(end of broadcast)--- TIP 4: Don't 'kill -9' the postmaster
