文档解释
ORA-18101: XUST0002 – Non-updating expression in a wrong position
Cause: A non-updating expression other than an empty expression ( ) or a call to the fn:error function was used in one of the following positions:
– The MODIFY clause of a TRANSFORM expression.
– The top-level expression in the body of a function declaration in which the keyword UPDATING is specified.
Action: None
