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Comparison Operators
Usually, you use the comparison operators in the WHERE clause of a data manipulation statement to form the predicates, that compare one expression to another and always yields the TRUE, FALSE, or NULL. You can use all the comparison operators listed below to form the predicates. Furthermore, you can merge predicates using the logical operators AND, OR, & NOT.
%NOTFOUND The %NOTFOUND is logical, opposite of the %FOUND. The %NOTFOUND yields FALSE if the last fetch returned a row, or TRUE when the final fetch failed to return a row. I
%ROWCOUNT The %ROWCOUNT yields the number of rows affected by the INSERT, UPDATE, or DELETE statement, or returned by a SELECT INTO statement. The %ROWCOUNT yields zero when a
What is Cursors how to use it in Real time application ?
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Data Types in SQL SQL's concept does not differ significantly from that defined in the theory book, apart from that business concerning NULL. However, the theory book equates
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