1.13 Getting Top/Bottom N directly
With a sequence already arranged in the expected order, just get the first or last N members by their ordinal numbers.
SPL script:
| A | |
|---|---|
| 1 | =create(a,b).record([“a”,10,“b”,20,“c”,30,“d”,40,“e”,50,“f”,60]) |
| 2 | =A1.ptop(-2,0) |
| 3 | =A1.ptop(2,0) |
| 4 | = A1.top(-2;0) |
| 5 | = A1.top(2;0) |
A1 Create a table sequence;
A2 Return [5,6]. ptop function and top function will get the top or bottom N records directly without performing a sort when the second parameter is 0;
A3 Return [1,2];
A4 Return bottom two records;
A5 Return top two records.
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