et_datatype_spec ::= { [UNSIGNED] INTEGER [EXTERNAL] [(len)] [delim_spec] |{ DECIMAL | ZONED } [EXTERNAL] [(len)] [delim_spec] (precision [ , scale]) |ORACLE_DATE |ORACLE_NUMBER [COUNTED] |FLOAT [EXTERNAL] [(len)] [delim_spec] |DOUBLE |BINARY_FLOAT [EXTERNAL] [(len)] [delim_spec] |BINARY_DOUBLE |RAW [(len)] |CHAR [(len)] [delim_spec] [trim_spec] [date_format_spec] |{ VARCHAR | VARRAW | VARCHARC | VARRAWC } ([length_of_length ,] max_len) }