PLS-01455: The predicates IS NULL and IS NOT NULL are defined only for column specifications
Cause: The predicates IS NULL and IS NOT NULL are defined only for column specifications, not for any other expressions. Section 5.15, lamp;lt;lamp;nbsp;null predicatelamp;gt; , indicates that in the predicate x IS NULL , x must be a column, and may not be any other kind of expression.
Action: none
Cause: The predicates IS NULL and IS NOT NULL are defined only for column specifications, not for any other expressions. Section 5.15, lamp;lt;lamp;nbsp;null predicatelamp;gt; , indicates that in the predicate x IS NULL , x must be a column, and may not be any other kind of expression.
Action: none
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