Skip to content
Projects
Groups
Snippets
Help
Loading...
Help
Support
Keyboard shortcuts
?
Submit feedback
Contribute to GitLab
Sign in
Toggle navigation
P
Postgres FD Implementation
Project overview
Project overview
Details
Activity
Releases
Repository
Repository
Files
Commits
Branches
Tags
Contributors
Graph
Compare
Issues
0
Issues
0
List
Boards
Labels
Milestones
Merge Requests
0
Merge Requests
0
CI / CD
CI / CD
Pipelines
Jobs
Schedules
Analytics
Analytics
CI / CD
Repository
Value Stream
Wiki
Wiki
Snippets
Snippets
Members
Members
Collapse sidebar
Close sidebar
Activity
Graph
Create a new issue
Jobs
Commits
Issue Boards
Open sidebar
Abuhujair Javed
Postgres FD Implementation
Commits
876ef5d5
Commit
876ef5d5
authored
Dec 11, 2006
by
Bruce Momjian
Browse files
Options
Browse Files
Download
Email Patches
Plain Diff
Remove blank lines in HTML FAQ.
parent
051b52c8
Changes
2
Hide whitespace changes
Inline
Side-by-side
Showing
2 changed files
with
16 additions
and
16 deletions
+16
-16
doc/FAQ
doc/FAQ
+1
-1
doc/src/FAQ/FAQ.html
doc/src/FAQ/FAQ.html
+15
-15
No files found.
doc/FAQ
View file @
876ef5d5
Frequently Asked Questions (FAQ) for PostgreSQL
Last updated: Mon Dec 11 17:4
4:33
EST 2006
Last updated: Mon Dec 11 17:4
5:54
EST 2006
Current maintainer: Bruce Momjian (bruce@momjian.us)
...
...
doc/src/FAQ/FAQ.html
View file @
876ef5d5
...
...
@@ -10,7 +10,7 @@
alink=
"#0000ff"
>
<H1>
Frequently Asked Questions (FAQ) for PostgreSQL
</H1>
<P>
Last updated: Mon Dec 11 17:4
4:33
EST 2006
</P>
<P>
Last updated: Mon Dec 11 17:4
5:54
EST 2006
</P>
<P>
Current maintainer: Bruce Momjian (
<A
href=
"mailto:bruce@momjian.us"
>
bruce@momjian.us
</A>
)
...
...
@@ -42,7 +42,7 @@
development team?
<BR>
<A
href=
"#item1.13"
>
1.13
</A>
) How does PostgreSQL compare to other
<SMALL>
DBMS
</SMALL>
s?
<BR>
<H2
align=
"center"
>
User Client Questions
</H2>
<A
href=
"#item2.1"
>
2.1
</A>
) What interfaces are available for
...
...
@@ -51,7 +51,7 @@
PostgreSQL with Web pages?
<BR>
<A
href=
"#item2.3"
>
2.3
</A>
) Does PostgreSQL have a graphical user
interface?
<BR>
<H2
align=
"center"
>
Administrative Questions
</H2>
<A
href=
"#item3.1"
>
3.1
</A>
) How do I install PostgreSQL somewhere other
...
...
@@ -281,7 +281,7 @@
</ul>
</li>
</ul>
<H3
id=
"item1.9"
>
1.9) How do I find out about known bugs or
missing features?
</H3>
...
...
@@ -307,7 +307,7 @@
<li>
The new feature is added to the
<A
href=
"http://www.postgresql.org/docs/faqs.TODO.html"
>
TODO
</A>
list
</li>
</ul>
<P>
PostgreSQL does not use a bug tracking system because we find
it more efficient to respond directly to email and keep the
<A
href=
"http://www.postgresql.org/docs/faqs.TODO.html"
>
TODO
</A>
...
...
@@ -318,7 +318,7 @@
<a
href=
"http://www.postgresql.org/developer/sourcecode/"
>
CVS
</a>
log messages. Even the release notes do not list every change
made to the software.
</P>
<H3
id=
"item1.10"
>
1.10) What documentation is available?
</H3>
<P>
PostgreSQL includes extensive documentation, including a large
...
...
@@ -370,7 +370,7 @@
"http://mysite.verizon.net/Graeme_Birchall/id1.html"
>
http://mysite.verizon.net/Graeme_Birchall/id1.html
</A>
</LI>
</UL>
<H3
id=
"item1.12"
>
1.12) How do I submit a patch or join the development
team?
</H3>
...
...
@@ -503,7 +503,7 @@
<P>
There are three major areas for potential performance
improvement:
</P>
<DL>
<DT><B>
Query Changes
</B></DT>
...
...
@@ -583,7 +583,7 @@
PostgreSQL minor releases are designed to fix only common bugs
with the least risk. The community considers
<i>
not
</i>
upgrading
more risky that upgrading.
</P>
<P>
Major releases (e.g. from 7.3 to 7.4) often change the internal
format of system tables and data files. These changes are often complex,
so we don't maintain backward compatibility for data files. A dump/reload
...
...
@@ -638,7 +638,7 @@
<P>
There are also system tables beginning with
<I>
pg_
</I>
that describe
these too.
</P>
<P>
Use
<I>
psql -l
</I>
will list all databases.
</P>
<P>
Also try the file
<I>
pgsql/src/tutorial/syscat.source
</I>
. It
...
...
@@ -660,7 +660,7 @@
</PRE>
<P>
You might then want to do
<I>
VACUUM FULL tab
</I>
to reclaim the
disk space used by the expired rows.
</P>
<H3
id=
"item4.4"
>
4.4) What is the maximum size for a row, a
table, and a database?
</H3>
...
...
@@ -735,7 +735,7 @@ table?</TD><TD>unlimited</TD></TR>
<P><SMALL>
NULL
</SMALL>
s are stored as bitmaps, so they
use very little space.
</P>
<H3
id=
"item4.6"
>
4.6) Why are my queries slow? Why don't they
use my indexes?
</H3>
...
...
@@ -760,7 +760,7 @@ table?</TD><TD>unlimited</TD></TR>
However,
<SMALL>
LIMIT
</SMALL>
combined with
<SMALL>
ORDER BY
</SMALL>
often will use an index because only a small portion of the table
is returned.
</P>
<P>
If you believe the optimizer is incorrect in choosing a
sequential scan, use
<CODE>
SET enable_seqscan TO 'off'
</CODE>
and
run query again to see if an index scan is indeed faster.
</P>
...
...
@@ -847,7 +847,7 @@ table?</TD><TD>unlimited</TD></TR>
SELECT COALESCE(col1, '') || COALESCE(col2, '')
FROM tab
</PRE>
<P>
To sort by the
<SMALL>
NULL
</SMALL>
status, use the
<SMALL>
IS NULL
</SMALL>
and
<SMALL>
IS NOT NULL
</SMALL>
modifiers in your
<SMALL>
ORDER BY
</SMALL>
clause.
Things that are
<I>
true
</I>
will sort higher than things that are
<I>
false
</I>
,
...
...
@@ -948,7 +948,7 @@ length</TD></TR>
execute("INSERT INTO person (name) VALUES ('Blaise Pascal')");
new_id = execute("SELECT currval('person_id_seq')");
</PRE>
<H3
id=
"item4.11.3"
>
4.11.3) Doesn't
<I>
currval()
</I>
lead to a race condition with other users?
</H3>
...
...
Write
Preview
Markdown
is supported
0%
Try again
or
attach a new file
Attach a file
Cancel
You are about to add
0
people
to the discussion. Proceed with caution.
Finish editing this message first!
Cancel
Please
register
or
sign in
to comment