メソッド・演繹 :
Arithmatic Logical Comparison Functions
+ ! = AVG
- & > ABS
* | < ACOS
/ <= ASC
% >= ASIN
^ <> ATAN
CDATE
CHR
COS
DATE
FIX
HEX
IIF
LCASE
LEFT
LOG
MAX
MID
MIN
RIGHT
ROUND
SIN
SQRT
TAN
UCASE