concatenate ::= CONCATENATE { integer | (integer) } |CONTINUEIF { { THIS | NEXT } [PRESERVE] [(] (pos_spec) |[LAST [PRESERVE] [(] } operator { str | X'hex_str' } [)]
concatenate ::= CONCATENATE { integer | (integer) } |CONTINUEIF { { THIS | NEXT } [PRESERVE] [(] (pos_spec) |[LAST [PRESERVE] [(] } operator { str | X'hex_str' } [)]