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F_DIGITS

compatibility to GrUDF

Entrypoint digits compatible with UTF-8

Inputs/Outputs

 Input         CSTRING(32760)      String from which all non-numbers had to be removed
 Output        CSTRING(32760)      String with removed all non-numbers (e.g. for TAPI)

Syntax

 TestSQL
 SELECT '0232653535' AS ISCORRECT, F_DIGITS(' (0232) / 6535-35') FROM RDB$DATABASE;
 SELECT NULL AS ISCORRECT, F_DIGITS(NULL) FROM RDB$DATABASE;