August 2010
Intermediate to advanced
526 pages
23h 39m
English
Content preview from Using SQLite
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Name
RAISE — Indicate an error condition
Syntax
Description
The RAISE expression isn’t an expression in the
traditional sense. Rather than producing a value, it provides a
means to raise an error exception. The RAISE expression can only be used in the body
of a trigger. It is typically used to flag a constraint
violation, or some similar problem. It is common to use a
RAISE expression in
conjunction with a CASE
expression, or some other expression that selectively executes
subexpressions depending on the logic of the SQL
statement.
See Also
CREATE TRIGGER [SQL Cmd, Ap C]
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