way one creates a database system. Parts that were in "make install"
are not either in "make all" or initdb. Nothing goes in the PGDATA
directory besides user data. Creating multiple database systems is
easier.
In addition to applying the patch, it is necessary to move the file
libpq/pg_hba to backend/libpq/pg_hba.sample.
Submitted by: Bryan Henderson <bryanh@giraffe.netgate.net>
attributes as tcl arrays. The previous code had problems with some chars
used as delimiter by Tcl. The new code should be more robust.
By: Massimo Dal Zotto <dz@cs.unitn.it>
Async notifies received while a backend is in the middle of a begin/end
transaction block are lost by libpq when the final end command is issued.
The bug is in the routine PQexec of libpq. The routine throws away any
message from the backend when a message of type 'C' is received. This
type of message is sent when the result of a portal query command with
no tuples is returned. Unfortunately this is the case of the end command.
As all async notification are sent only when the transaction is finished,
if they are received in the middle of a transaction they are lost in the
libpq library. I added some tracing code to PQexec and this is the output:
Submitted by: Massimo Dal Zotto <dz@cs.unitn.it>
|record, by a small patch to libpq++? At least until the
|feature that will allow dumped oid's to be re-loaded into
|a database becomes available, I need access to the oids
|of newly created records... To this end, I have written a
|three-line wrapper for the PQoidStatus function in libpq and
|named this wrapper OidStatus() (I'd appreciate suggestions for
|a name that would better fit into the general naming scheme).
|
|Regards,
|
|Ernst
|
When you connect to a database with PQsetdb, as with psql, depending on
how your uninitialized variables are set, you can get a failure with a
"There is no connection to the backend" message.
The fix is to move a call to PQexec() from inside connectDB() to
PQsetdb() after connectDB() returns to PQsetdb(). That way a connection
doesn't have to be already established in order to establish it!
From: bryanh@giraffe.netgate.net (Bryan Henderson)
|Here is a fix for the psql alignment problem. It turns out that libpq
|was trying to determine if the column contained only numeric values so
|it could right justify it. The 'e' values were taked as exponient
|values and all columns were considered numeric.
|
|The patch excludes 'e' and 'E' as being valid first-column numeric
|values.
|
Submitted by: Bruce...
|We're all too familiar with psql's "no response from backend" message.
|Users can't tell what this means, and psql continues prompting for
|commands after it even though the backend is dead and no commands can
|succeed. It eventually dies on a signal when the dead socket fills
|up. I extended the message to offer a better explanation and made
|psql exit when it finds the backend is dead.
|
|I also added a short message and newline when the user does a ctl-D so
|it doesn't mess up the terminal display.
|
|
Submitted by: Bryan Henderson <bryanh@giraffe.netgate.net>
Attached is a patch to allow libpq to determine if a field is null.
This is needed because text fields will return a PQgetlength() of 0
whether it is '' or NULL. There is even a comment in the source noting
the fact.
I have changed the value of the 'len' field for NULL result fields. If
the field is null, the len is set to -1 (NULL_LEN). I have changed
PQgetlength() to return a 0 length for both '' and NULL. A new function
PQgetisnull() returns true or false for NULL.
The only risk is to applications that do not use the suggested
PQgetlength() call, but read the result 'len' field directly.
As this is not recommended, I think we are safe here.
A separate documentation patch will be sent.
Submitted by: Bruce Momjian <maillist@candle.pha.pa.us>
Here are a few minor fixes to Postgres95. Mostly I have added const
to some of the char pointers. There was also a missing header file
and a place where it looks like "==" was used when "=" was meant.
I also changed some variables from Pfin and Pfout tp pfin and pfout
because the latter shadow global variables and that just seems like
an unsafe practice which I like to avoid.
Submitted by: "D'Arcy J.M. Cain" <darcy@druid.druid.com>
Kerberos is being used (attempt to free static memory).
The error was caused by a confusing doublespeak of fe_getauthname():
Returns a pointer to static memory, if you authenticate via Kerberos,
a pointer to dynamic memory otherwise.
Submitted by: Erich Stamberger <eberger@gewi.kfunigraz.ac.at>
compatibility. There isn't much difference here against my previous
PQprint() code, except that you can add optional arguments to the
<table args> in html.
Most of the changes in here look to b epurely cosmetic, and don't
affect anything...
...and some stuff is completely questionable...in that I may have reversed
some of the stuf fwe already had :(
before (plus some optimisations/bug fixes et al). I've included a small
demo transcript below. Note that all of of the display
functionality/intelligence you see here, can be had merely by calling
the new LIBPQ PQprint() routine with the appropriate arguments/options,
including the HTML3 output guff.
submitted by: Julian Assange <proff@suburbia.net>
Bruce Momjian