Do you want SQL92 standard data types?
If you want to see the sql 92 standards, look at this file:
http://epoch.cs.berkeley.edu:8000/sequoia/schema/STANDARDS/SQL3/sql1992.txt
The standard data types for SQL92 are:
CHARACTER, CHARACTER VARYING, BIT, BIT VARYING, NUMERIC, DECIMAL,
INTEGER, SMALLINT, FLOAT, REAL, DOUBLE PRECISION, DATE, TIME,
TIMESTAMP, and INTERVAL
Anything else is database specific and should be avoided.