Example 1: Set the number of items in descriptor 'NEWDA' to the value in :numitems.
EXEC SQL SET DESCRIPTOR 'NEWDA' COUNT = :numitems;
Example 2: Set the value of the type and length for the first item descriptor of descriptor 'NEWDA'
SET DESCRIPTOR 'NEWDA' VALUE 1 TYPE = :dtype, LENGTH = :olength;
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