Scalar functions

An Enterprise JavaBeans (EJB) query contains scalar functions for doing type conversions, string manipulation, and for manipulating date-time values.

The list of scalar functions is documented in the topic EJB query: Scalar functions.

Example: Scalar functions

Find employees hired in 1999:
SELECT OBJECT(e) FROM EmpBean e where YEAR(e.hireDate) = 1999
The only scalar functions that are guaranteed to be portable across backend datastore vendors are the following:
  • ABS
  • MOD
  • SQRT
  • CONCAT
  • LENGTH
  • LOCATE
  • SUBSTRING
  • UCASE
  • LCASE

The other scalar functions should be used only when DB2 is the backend datastore.


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