PROC SQL allows a subquery (contained in parentheses) at any point in an expression where a simple column value or constant can be used. In this case, a subquery must return a single value, that is, ...

In SQL, the CASE statement functions like IF-THEN-ELSE logic in programming, offering a way to create branches in your query. It's useful for comparing values, evaluating expressions, or applying ...

Learn how to use the SQL CASE statement to perform conditional logic in SQL. ... it is important to enclose complex expressions or conditions in parentheses to avoid confusion and errors.

Natively compiled T-SQL modules support CASE expressions in some versions of SQL Server. This example implements the CASE expression in a query. CASE expressions are supported in natively compiled ...

Usage: convert_decode_to_case [options] -h, --help Display usage information -v, --[no-]verbose Run verbosely -p, --parallel Process all input files in parallel -i, --input-dir=INPUT Read from INPUT, ...

Set operators follow this order of precedence unless they are overridden by parentheses in the expression(s): INTERSECT is evaluated first. OUTER UNION, UNION, and EXCEPT have the same level of ...