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This commit is contained in:
Bruce Momjian 2000-03-24 01:20:09 +00:00
parent 7177bbac29
commit 853cf66176
3 changed files with 8 additions and 12 deletions
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4
HISTORY
View File

@ -161,7 +161,7 @@ Allow subselects on the left side of comparison operators (Tom)
New parallel regression test (Jan) New parallel regression test (Jan)
Change backend-side COPY to write files with permissions 644 not 666 (Tom) Change backend-side COPY to write files with permissions 644 not 666 (Tom)
Force permissions on PGDATA directory to be secure, even if it exists (Tom) Force permissions on PGDATA directory to be secure, even if it exists (Tom)
Added psql LastOid variable to return last inserted oid (Peter E) Added psql LASTOID variable to return last inserted oid (Peter E)
Allow concurrent vacuum and remove pg_vlock vacuum lock file (Tom) Allow concurrent vacuum and remove pg_vlock vacuum lock file (Tom)
Add permissions check so only Postgres superuser or table owner can Add permissions check so only Postgres superuser or table owner can
vacuum (Peter E) vacuum (Peter E)
@ -182,7 +182,7 @@ Allow flag to control COPY input/output of NULLs (Peter E)
Make postgres user have a password by default (Peter E) Make postgres user have a password by default (Peter E)
Add CREATE/ALTER/DROP GROUP (Peter E) Add CREATE/ALTER/DROP GROUP (Peter E)
All administration scripts now support --long options (Peter E, Karel) All administration scripts now support --long options (Peter E, Karel)
Vacuumdb script now supports --alldb option (Peter E) Vacuumdb script now supports --all option (Peter E)
ecpg new portable FETCH syntax ecpg new portable FETCH syntax
Add ecpg EXEC SQL IFDEF, EXEC SQL IFNDEF, EXEC SQL ELSE, EXEC SQL ELIF Add ecpg EXEC SQL IFDEF, EXEC SQL IFNDEF, EXEC SQL ELSE, EXEC SQL ELIF
and EXEC SQL ENDIF directives and EXEC SQL ENDIF directives

12
doc/src/sgml/ref/lock.sgml
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@ -1,5 +1,5 @@
<!-- <!--
$Header: /cvsroot/pgsql/doc/src/sgml/ref/lock.sgml,v 1.17 2000/03/23 23:16:47 momjian Exp $ $Header: /cvsroot/pgsql/doc/src/sgml/ref/lock.sgml,v 1.18 2000/03/24 01:20:09 momjian Exp $
Postgres documentation Postgres documentation
--> -->
@ -87,8 +87,7 @@ LOCK [ TABLE ] <replaceable class="PARAMETER">name</replaceable> IN SHARE ROW EX
<listitem> <listitem>
<para> <para>
If EXCLUSIVE or SHARE are not specified, EXCLUSIVE is assumed. If EXCLUSIVE or SHARE are not specified, EXCLUSIVE is assumed.
If ROW or ACCESS is not specified, the entire table is locked Locks exist for the duration of the transaction.
for the duration of the transaction.
</para> </para>
</listitem> </listitem>
</varlistentry> </varlistentry>
@ -117,14 +116,12 @@ LOCK [ TABLE ] <replaceable class="PARAMETER">name</replaceable> IN SHARE ROW EX
<note> <note>
<para> <para>
This lock mode is acquired automatically over tables being queried. This lock mode is acquired automatically over tables being queried.
It is released after the statement completes.
It does not remain for the duration of the transaction.
</para> </para>
</note> </note>
<para> <para>
This is the least restrictive lock mode. It conflicts only with This is the least restrictive lock mode. It conflicts only with
ACCESS EXCLUSIVE mode. It is used to protect a table being ACCESS EXCLUSIVE mode. It is used to protect a table from being
modified by concurrent <command>ALTER TABLE</command>, modified by concurrent <command>ALTER TABLE</command>,
<command>DROP TABLE</command> and <command>VACUUM</command> <command>DROP TABLE</command> and <command>VACUUM</command>
commands. commands.
@ -138,8 +135,7 @@ LOCK [ TABLE ] <replaceable class="PARAMETER">name</replaceable> IN SHARE ROW EX
<note> <note>
<para> <para>
Automatically acquired by <command>SELECT...FOR UPDATE</command>. Automatically acquired by <command>SELECT...FOR UPDATE</command>.
While it is a shared lock, there is the intention to later upgrade While it is a shared lock, may be upgrade later to a ROW EXCLUSIVE lock.
this to a ROW EXCLUSIVE lock.
</para> </para>
</note> </note>

4
doc/src/sgml/release.sgml
View File

@ -196,7 +196,7 @@ Allow subselects on the left side of comparison operators (Tom)
New parallel regression test (Jan) New parallel regression test (Jan)
Change backend-side COPY to write files with permissions 644 not 666 (Tom) Change backend-side COPY to write files with permissions 644 not 666 (Tom)
Force permissions on PGDATA directory to be secure, even if it exists (Tom) Force permissions on PGDATA directory to be secure, even if it exists (Tom)
Added psql LastOid variable to return last inserted oid (Peter E) Added psql LASTOID variable to return last inserted oid (Peter E)
Allow concurrent vacuum and remove pg_vlock vacuum lock file (Tom) Allow concurrent vacuum and remove pg_vlock vacuum lock file (Tom)
Add permissions check so only Postgres superuser or table owner can Add permissions check so only Postgres superuser or table owner can
vacuum (Peter E) vacuum (Peter E)
@ -217,7 +217,7 @@ Allow flag to control COPY input/output of NULLs (Peter E)
Make postgres user have a password by default (Peter E) Make postgres user have a password by default (Peter E)
Add CREATE/ALTER/DROP GROUP (Peter E) Add CREATE/ALTER/DROP GROUP (Peter E)
All administration scripts now support --long options (Peter E, Karel) All administration scripts now support --long options (Peter E, Karel)
Vacuumdb script now supports --alldb option (Peter E) Vacuumdb script now supports --all option (Peter E)
ecpg new portable FETCH syntax ecpg new portable FETCH syntax
Add ecpg EXEC SQL IFDEF, EXEC SQL IFNDEF, EXEC SQL ELSE, EXEC SQL ELIF Add ecpg EXEC SQL IFDEF, EXEC SQL IFNDEF, EXEC SQL ELSE, EXEC SQL ELIF
and EXEC SQL ENDIF directives and EXEC SQL ENDIF directives