MDAC 2.5 SDK - ODBC Programmer's Reference
Appendix C: SQL Grammar

Numeric Literal Syntax

The following syntax is used for numeric literals in ODBC:

numeric-literal ::= signed-numeric-literal | unsigned-numeric-literal

signed-numeric-literal ::= [sign] unsigned-numeric-literal

unsigned-numeric-literal ::= exact-numeric-literal | approximate-numeric-literal

exact-numeric-literal ::= unsigned-integer [period[unsigned-integer]] |
period unsigned-integer

sign ::= plus-sign | minus-sign

approximate-numeric-literal ::= mantissa E exponent

mantissa ::= exact-numeric-literal

exponent ::= signed-integer

signed-integer ::= [sign] unsigned-integer

unsigned-integer ::= digit...

plus-sign ::= +

minus-sign ::= -

digit ::= 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 0

period ::= .