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Example:
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PARSER PQL #ADDQUERY out = TOPK({ k = 10, scoringfunction = 'price' }, ELEMENTWINDOW({ size = 5 }, bid ) ) out2 = MAP({ expressions = [ #LOOP i 0 upto 9 ['elementAt(topk[${i}],1)','top_${i+1}_auction'], ['elementAt(topk[0],2)','top_${i+1}_bidder'], ['elementAt(topk[0],4)','top_${i+1}_price'], #ENDLOOP, 'topk' ], ALLOWNULL = true, SUPPRESSERRORS = true }, out ) |