Returns VALUE_IF_EXISTS, if COLUMN_NAME is present in the FROM Clause of the current query, otherwise return CALUE_IF_NO_EXISTS.
Example:
COLUMNEXISTS (COLUMN_NAME,VALUE_IF_EXISTS,VALUE_IF_NO_EXISTS)
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Returns VALUE_IF_EXISTS, if COLUMN_NAME is present in the FROM Clause of the current query, otherwise return CALUE_IF_NO_EXISTS.
Example:
COLUMNEXISTS (COLUMN_NAME,VALUE_IF_EXISTS,VALUE_IF_NO_EXISTS)