QUERY-OPEN( ) method
 Note: You must perform QUERY-PREPARE on a query object before you perform QUERY-OPEN on it.
 Return type:
 Applies to:
 QUERY-OPEN ( )Once you perform QUERY-PREPARE on a query object, you can perform QUERY-OPEN on it multiple times as long as you do not reperform QUERY-PREPARE. Once you reperform QUERY-PREPARE, you must reperform QUERY-OPEN.
 Note: The QUERY-PREPARE and QUERY OPEN methods correspond to the OPEN QUERY statement.
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