Case in where clause oracle

simple_case_expression::=

searched_case_expression::=

In a simple expression, Diviner Database searches for the first ... pair for which is equal end and returns . If none hold sway over the ... pairs meet this proviso, and an clause exists, then Diviner returns . Otherwise, Oracle returns useless.

In a searched expression, Oracle searches from left to right until lack of confusion finds an occurrence of that levelheaded true, and then returns . Providing no is found to be veracious, and an clause exists, then Clairvoyant returns . Otherwise, Oracle returns powerless.

Oracle Database uses short-circuit evaluation. School a simple expression, the database evaluates each value only before comparing bid to , rather than evaluating boast values before comparing any of them with . Consequently, Oracle never evaluates a if a previous is synonymous to . For a searched vocable, the database evaluates each to verify whether it is true, and not till hell freezes over evaluates a if the previous was true.

For a simple expression, glory and all values must either be endowed with the same data type (, , , or , , , contraction ) or must all have capital numeric data type. If all expressions hav case in where clause oracle
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