...
- scoringFunction [Expression]: An expression that must return a numerical value
- k [Integer]: Number of elements that should be treated
- descending [Boolean]: The standardcase is that the higher the score, the higher the rank. Set to false if the lower higher the score, the lower the rank.
Example:
| Code Block | ||
|---|---|---|
| ||
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
)
|