Release 10.1A: OpenEdge Development:
ADM Reference

insertExpression

PRIVATE function. Inserts an expression into one buffer’s WHERE clause.

Location: lookup.p

Parameters:

INPUT pcWhere AS CHARACTER

A complete WHERE clause with or without the FOR keyword, and without leading or trailing commas.

INPUT pcExpression AS CHARACTER

New expression/OF phrase to replace the existing OF phrase.

INPUT pcAndOr AS CHARACTER

Whether to AND (default) or OR the new expression.

Returns: CHARACTER PRIVATE

Notes:

The new expression is embedded in parentheses, but no parentheses are placed around the existing expression.
Lock keywords must be unabbreviated or without –LOCK (that is, SHARE or EXCLUSIVE.)
Any keyword in comments might cause problems.