expression (expr):
- expr
expr + expr
expr - expr
expr * expr
expr / expr
expr % expr
expr DIV expr
expr ** expr
fldname
fname.fldname
expr -> [fname.] fldname
number
"string"
$parameter
varref
DATE (expr, expr, expr)
DAY (expr)
EOF (fname)
ERROR (fname)
FILEFULL (fname)
FORMAT (expr, expr)
HOUR (expr)
MATCH (expr, expr)
MINUTE (expr)
MONTH (expr)
RESULT (expr)
ROUND (expr)
SECOND (expr)
STRLEFT (expr, expr)
STRLEN (expr)
STRMID (expr, expr, expr)
STRRIGHT (expr, expr)
TIME (expr, expr, expr)
YEAR (expr)
(expr)