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A LONG column can be referenced in a select list and/or a host
variable declaration.
Some restrictions do apply to LONG columns.
However, related standard columns are not affected by these
restrictions.
LONG columns cannot be used as follows:
In a type 2 INSERT command.
Remotely through ALLBASE/NET.
As hash or B-tree index key columns.
In a GROUP BY, ORDER BY, DISTINCT, or UNION clause.
In aggregate functions (AVG, SUM, MIN, MAX).
As columns to which integrity constraints are assigned.
With the DEFAULT option of the CREATE or ALTER TABLE commands.
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