database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-11-09 06:21:09 +03:00
Code Activity

Clean up to ensure tag completion as required by the newest versions

Browse Source 
of Norm's Modular Style Sheets and jade/docbook.
From Vince Vielhaber <vev@michvhf.com>.
This commit is contained in:
Thomas G. Lockhart
1998-12-29 02:24:47 +00:00
parent 6d7735e7f0
commit a75f2d21a8
115 changed files with 10587 additions and 8000 deletions
Download Patch File Download Diff File Expand all files Collapse all files

48
doc/src/sgml/ref/create_trigger.sgml
View File

@@ -12,6 +12,7 @@
<REFPURPOSE>
Creates a new trigger
</REFPURPOSE>
</refnamediv>
<REFSYNOPSISDIV>
<REFSYNOPSISDIVINFO>
<DATE>1998-09-21</DATE>
@@ -92,8 +93,11 @@ CREATE TRIGGER <REPLACEABLE CLASS="PARAMETER">name</REPLACEABLE> { BEFORE | AFTE
<LISTITEM>
<PARA>
This message is returned if the trigger is successfully created.
</VARIABLELIST>
</para>
</listitem>
</varlistentry>
</VARIABLELIST>
</para>
</REFSECT2>
</REFSYNOPSISDIV>
@@ -147,31 +151,31 @@ CREATE TRIGGER <REPLACEABLE CLASS="PARAMETER">name</REPLACEABLE> { BEFORE | AFTE
<PARA>
Refer to <command>DROP TRIGGER</command> for information on how to
remove triggers.
</PARA>
</PARA>
</REFSECT2>
</refsect1>
<REFSECT1 ID="R1-SQL-CREATETRIGGER-2">
<TITLE>
Usage
</TITLE>
<PARA>
Check if the specified distributor code exists in the distributors
table before appending or updating a row in the table films:
Check if the specified distributor code exists in the distributors
table before appending or updating a row in the table films:
</PARA>
<ProgramListing>
CREATE TRIGGER if_dist_exists
BEFORE INSERT OR UPDATE ON films FOR EACH ROW
EXECUTE PROCEDURE check_primary_key ('did', 'distributors', 'did');
CREATE TRIGGER if_dist_exists
BEFORE INSERT OR UPDATE ON films FOR EACH ROW
EXECUTE PROCEDURE check_primary_key ('did', 'distributors', 'did');
</ProgramListing>
<PARA>
Before cancelling a distributor or updating its code, remove every
reference to the table films:
Before cancelling a distributor or updating its code, remove every
reference to the table films:
</PARA>
<ProgramListing>
CREATE TRIGGER if_film_exists
BEFORE DELETE OR UPDATE ON distributors FOR EACH ROW
EXECUTE PROCEDURE check_foreign_key (1, 'CASCADE', 'did', 'films', 'did');
CREATE TRIGGER if_film_exists
BEFORE DELETE OR UPDATE ON distributors FOR EACH ROW
EXECUTE PROCEDURE check_foreign_key (1, 'CASCADE', 'did', 'films', 'did');
</ProgramListing>
</REFSECT1>
@@ -190,25 +194,27 @@ CREATE TRIGGER if_film_exists
SQL92
</TITLE>
<PARA>
There is no <command>CREATE TRIGGER</command> in <acronym>SQL92</acronym>.
There is no <command>CREATE TRIGGER</command> in <acronym>SQL92</acronym>.
</PARA>
<PARA>
The second example above may also be done by using a FOREIGN KEY
constraint as in:
</PARA>
<ProgramListing>
CREATE TABLE distributors (
CREATE TABLE distributors (
did DECIMAL(3),
name VARCHAR(40),
CONSTRAINT if_film_exists
FOREIGN KEY(did) REFERENCES films
ON UPDATE CASCADE ON DELETE CASCADE
);
</ProgramListing>
FOREIGN KEY(did) REFERENCES films
ON UPDATE CASCADE ON DELETE CASCADE
);
</ProgramListing>
<PARA>
However, foreign keys are not yet implemented (as of version 6.4) in
<productname>Postgres</productname>.
</PARA>
</refsect2>
</refsect1>
</REFENTRY>
<!-- Keep this comment at the end of the file