ARRAY-INDEX( ) Query array index

The ARRAY-INDEX( ) function can be applied to arrays. ARRAY-INDEX supplies the value of an array index. As a result, other functions can then explicitly request this element via the array index.

Result type:  INTEGER

ARRAY-INDEX( )

ARRAY-NAME = string_expression

,INDEX = *FIRST / *LAST / *LOWER-BOUND / *UPPER-BOUND