update trigger

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09-17-2010

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update trigger

hi all,

i hope i am posting this /beginner) question in the right forum:
i want to create an update trigger, which rolls back a transaction if a record of a table is updated. the table has - amongst others - a field 'statusid' - if a record in this table has the statusid X and it is attempted to update this field to Y, the trigger should rollback the transaction.

thanks for every hint or advise in advance!
k

---------- Post updated at 09:03 AM ---------- Previous update was at 08:23 AM ----------

I was able to help myself

kalinkula

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LEARN ABOUT LINUX

alter_trigger

ALTER 
TRIGGER(7)						   SQL Commands 						  ALTER TRIGGER(7)

NAME

       ALTER TRIGGER - change the definition of a trigger

SYNOPSIS

       ALTER TRIGGER name ON table RENAME TO newname

DESCRIPTION

       ALTER TRIGGER changes properties of an existing trigger. The RENAME clause changes the name of the given trigger without otherwise changing
       the trigger definition.

       You must own the table on which the trigger acts to be allowed to change its properties.

PARAMETERS

       name   The name of an existing trigger to alter.

       table  The name of the table on which this trigger acts.

       newname
	      The new name for the trigger.

NOTES

       The ability to temporarily enable or disable a trigger is provided by ALTER TABLE [alter_table(7)], not by  ALTER  TRIGGER,  because  ALTER
       TRIGGER has no convenient way to express the option of enabling or disabling all of a table's triggers at once.

EXAMPLES

       To rename an existing trigger:

       ALTER TRIGGER emp_stamp ON emp RENAME TO emp_track_chgs;

COMPATIBILITY

       ALTER TRIGGER is a PostgreSQL extension of the SQL standard.

SEE ALSO

       ALTER TABLE [alter_table(7)]

SQL - Language Statements					    2010-05-14							  ALTER TRIGGER(7)

UNIX and Linux Applications