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F_WORDNUM

input/output-compatibility to rFunc (WORDNUM, LONGWORDNUM)

Entrypoint wordnum not compatible with UTF-8 - if needed please ask

Inputs/Outputs

  Input    CSTRING(32760)     string, in which an other string is looked for
           INTEGER            no. of string to find (n-ths word)
           CSTRING(31)        word delimiter
           SMALLINT	
  Output   CSTRING(254)       nth-word

Syntax

  Countinf for parameter 2 starts with 1.
  TestSQL
  SELECT 'ABC' AS ISORRECT, F_WORDNUM('ABC 123 45678 9123', 1, ' ', 0) FROM RDB$DATABASE;
  SELECT NULL AS ISCORRECT, F_WORDNUM(NULL, NULL, NULL, NULL) FROM RDB$DATABASE;