NexusDB Guide > SQL Reference > Predicates

NexusDB V3 Manual

Deleting Predicate

Testing if a trigger event is DELETE.

Syntax

<deleting predicate> ::= DELETING

Notes

§	The DELETING predicate can only be specified in the body of a trigger definition to check the trigger event.

§	The predicate evaluates to TRUE if the trigger was activated by an DELETE operation on the table, else to FALSE.

Examples

1)	The following example shows how the DELETING predicate is used in the WHEN clause of a triggered action:

WHEN ( DELETING )

triggered SQL statements

2)	The following example shows how the DELETING predicate is used in a triggered SQL statement:

IF DELETING THEN ... END IF;

Conformance

NexusDB extensions

DELETING predicate

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