Fixed-point scalars?

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Hi,

PG 8.1.5

The closed-source RDBMS that we are hoping to archive on PostgreSQL
8.1.5 has fixed-point scalars, where the data is *stored* as a plain
old scalar, but is run-time *interpreted* as having a decimal point.
For example:

SMALLINT(2)
INTEGER(2)
BIGINT(2)

We use INTEGER(2) *extensively* for monetary values that won't
exceed $21,474,836.47, and BIGINT(2) for those times where it might.

This is very useful since integer arithmetic is so fast, and you
know the field will always be 4 bytes.

Are these data-types not in PG, or am I missing something?

Also, how do you calculate the size of a NUMERIC?

Lastly, I know they are the same, but which is the
"preferred/standard" type: NUMERIC or DECIMAL?

Thanks
- --
Ron Johnson, Jr.
Jefferson LA USA

Is "common sense" really valid?
For example, it is "common sense" to white-power racists that
whites are superior to blacks, and that those with brown skins
are mud people.
However, that "common sense" is obviously wrong.
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