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2025-09-23 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Database >
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Purpose: update the fields in a table, automatically trigger the trigger, the trigger will change the value of the added field, and then determine which tables have been update according to the value of the added field before and after the change, and add filters at the business level to filter those updated tables
one。 Add fields to the table and add default values
Alter table Project add IsSys int default (1)
two。 Change the default value
Update Project set IsSys='1'
Three. Create trigger
CREATE TRIGGER ProjectDATAUpdate
ON Project
For UPDATE
AS
BEGIN
If not update (IsSys)
Update Project set IsSys='0' from Inserted a where Project.id=a.id
END
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