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, ...

By writing CTE you can use full functionality of SQL to select data and create intermediate tables for any transformation goals. Be careful if you use this CTE with JOINS and then with Data Extraction ...

For example, when performing a set operation on two table-expressions, PROC SQL matches the first specified column-name (listed in the SELECT clause) from one table-expression with the first specified ...

Add a column or expression to a select Select select = (Select) CCJSqlParserUtil.parse("select a from mytable"); SelectUtils.addExpression(select, new Column("b")); Now select contains SELECT a, b ...