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Columnn, Now, NULL); END;-- Trigger for DELETE CREATE TRIGGER Database. TableDelete AFTER DELETE ON Database. OriginalTable REFERENCING OLD AS O FOR EACH ROW MODE DB2SQL BEGIN DECLARE Now TIMESTAMP; SET NOW = CURRENT TIMESTAMP; UPDATE Database. HistoryTable SET EndDate = Now WHERE Column1 = O. Column1 AND EndDate IS NULL; END;-- Trigger for ...
Before trigger is for checking data and deciding if operation should be permitted. If exception is thrown from before trigger then operation is aborted and no data are changed. In DB2 before triggers are read only — you can't modify data in before triggers. After triggers are designed for post processing after requested change was performed.
In SQL, the TRUNCATE TABLE statement is a data manipulation language (DML) [1] operation that deletes all rows of a table without causing a triggered action. The result of this operation quickly removes all data from a table, typically bypassing a number of integrity enforcing mechanisms.
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Does not free the space occupied by the data in the table (in the TABLESPACE) Does not reset the SEQUENCE value assigned to the table; DELETE works much slower than TRUNCATE; You can undo the operation of removing records by using the ROLLBACK command; DELETE requires a shared table lock; Triggers fire; DELETE can be used in the case of ...
A record number of travelers are expected to close out 2024, according to AAA. The association projected 119.3 million people will travel 50 miles or more from home from December 21 to January 1 ...
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