- new millisecond (ms) and microsecond (us) support
- more robus parsing from string - used is separator checking for
non-exact formats like to_date('2001-9-1', 'YYYY-MM-DD')
- SGML docs are included
Karel Zak
for speed reasons; its result type also changes to int8. avg() on these
datatypes now accumulates the running sum in int8 for speed; but we still
deliver the final result as numeric, so that fractional accuracy is
preserved.
count() now counts and returns in int8, not int4. I am a little nervous
about this possibly breaking users' code, but there didn't seem to be
a strong sentiment for avoiding the problem. If we get complaints during
beta, we can change count back to int4 and add a "count8" aggregate.
For that matter, users can do it for themselves with a simple CREATE
AGGREGATE command; the int4inc function is still present, so no C hacking
is needed.
Also added max() and min() aggregates for OID that do proper unsigned
comparison, instead of piggybacking on int4 aggregates.
initdb forced.
tests to return the correct results per SQL9x when given NULL inputs.
Reimplement these tests as well as IS [NOT] NULL to have their own
expression node types, instead of depending on special functions.
From Joe Conway, with a little help from Tom Lane.
adjustments. Note that many tables are being abused with *really* long
description columns. Should probably shrink those columns to be more
concise, and move some of the info to follow-on reference notes.
at the beginning and end of the input string, not the beginning and end
of "a line", since Postgres does not allow them to match at newline
characters in the data.
Chapter 4
String Operators
Table 4.7: Other String Functions
strpos is missing the result in the result column, it should be 2
Also to_ascii might need a result but maybe not.
Appendix A
In the Time Zone Table
Greenwich is spelled Greenwish
David Aldrich
recommendation from Paul Vixie. Add a new abbrev() function to produce
abbreviated format as text. No forced initdb, but new function is not
available unless you do an initdb or add the pg_proc row manually.
it fixing Y,YY,YYY,YYYY conversion, the docs and regress tests update
are included too.
During the patch testing I found small bug in miscadmin.h in
convertstr() declaration. Here it's fixed too.
Thanks
Karel
functions, per recent discussions on pghackers. For now, I have called
the verbose-display formatting function text(), but will reconsider if
enough people object.
initdb forced.
- rename ichar() to chr() (discussed with Tom)
- add docs for oracle compatible routines:
btrim()
ascii()
chr()
repeat()
- fix bug with timezone in to_char()
- all to_char() variants return NULL instead textin("")
if it's needful.
The contrib/odbc is without changes and contains same routines as main
tree ... because I not sure how plans are Thomas with this :-)
Karel
---------------------------------------------------------------------------
This effectively one line patch should fix the fact that
foreign key definitions in create table were erroring if
a primary key was defined. I was using the columns
list to get the columns of the table for comparison, but
it got reused as a temporary list inside the primary key
stuff.
Stephan Szabo
There is still no effective difference but it will kick in once setuid
functions exist (not included here). Make old getpgusername() alias for
current_user.
- full support for IW (ISO week) and vice versa conversion for IW too
(the to_char 'week' support is now complete and I hope correct).
Thomas, I use for IW code from timestamp.c, for this I create separate
function date2isoweek() from original 'case DTK_WEEK:' code in the
timestamp_part(). I mean will better use one code for same feature in
date_part() and in to_char(). The isoweek2date() is added to timestamp.c
too. Right?
IMHO in 7.1 will all to_char's features complete. It is cca 41 templates
for date/time and cca 21 for numbers.
* to_ascii:
- gcc, is it correct now? :-)
In the patch is documentation for to_char's IW and for to_ascii().
Karel
that RAND_MAX applies to them, since it doesn't. Instead add a
config.h parameter MAX_RANDOM_VALUE. This is currently set at 2^31-1
but could be auto-configured if that ever proves necessary. Also fix
some outright bugs like calling srand() where srandom() is appropriate.
Thomas G. Lockhart
Peter Eisentraut
Tatsuo Ishii
Bruce Momjian
Tom Lane