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How to create a new trigger in SQL Server?
First, to create a new trigger, you specify the name of the trigger and schema to which the trigger belongs in the CREATE TRIGGER clause: CREATE TRIGGER production.trg_product_audit. Next, you specify the name of the table, which the trigger will fire when an event occurs, in the ON clause: ON production.products.
Can a DDL trigger be used in dynamic SQL?
The data in the inserted table can be used quite easily for dynamic SQL, same as any other data. If what you want is the new columns, I think you’d need to use a DDL trigger to accomplish that. “Nobody knows the age of the human race, but everyone agrees it’s old enough to know better.” – Anon
Can a dynamic statement be used in a trigger?
From that select, you could build a dynamic statement that would insert those values into the name-value table. Code like that could become quite slow, and since triggers hold locks and hold up transactions while they execute, you might not want that in a trigger.
When to fire a trigger in SQL Server?
A single trigger can fire in response to one or more actions against the table. The NOT FOR REPLICATION option instructs SQL Server not to fire the trigger when data modification is made as part of a replication process.
How are Transact-SQL statements used in a trigger?
The Transact-SQL statements in a trigger frequently include control-of-flow language. DML triggers use the deleted and inserted logical (conceptual) tables. They’re structurally similar to the table on which the trigger is defined, that is, the table on which the user action is tried.
Can a DML trigger be used instead of a SQL statement?
Specifies that the DML trigger launches instead of the triggering SQL statement, thus, overriding the actions of the triggering statements. You can’t specify INSTEAD OF for DDL or logon triggers. At most, you can define one INSTEAD OF trigger per INSERT, UPDATE, or DELETE statement on a table or view.