可以通过元编程sqlColAlias实现
sql(sqlColAlias(makeCall(ff,sqlCol(`s)),`a+string(1..60)),table(rand(1.0,10) as s)).eval()
a1 a2 a3 a4 a5 a6 ...
----------------- ----------------- ----------------- ----------------- ----------------- ----------------- ---
0.675343952374533 0.675343952374533 0.675343952374533 0.675343952374533 0.675343952374533 0.675343952374533 ...
0.939932537497953 0.939932537497953 0.939932537497953 0.939932537497953 0.939932537497953 0.939932537497953 ...
0.187748047057539 0.187748047057539 0.187748047057539 0.187748047057539 0.187748047057539 0.187748047057539 ...
0.082222495693713 0.082222495693713 0.082222495693713 0.082222495693713 0.082222495693713 0.082222495693713 ...
0.153666474157944 0.153666474157944 0.153666474157944 0.153666474157944 0.153666474157944 0.153666474157944 ...
0.626400190871209 0.626400190871209 0.626400190871209 0.626400190871209 0.626400190871209 0.626400190871209 ...
0.976464069681242 0.976464069681242 0.976464069681242 0.976464069681242 0.976464069681242 0.976464069681242 ...
0.596477479441092 0.596477479441092 0.596477479441092 0.596477479441092 0.596477479441092 0.596477479441092 ...
0.428009673720226 0.428009673720226 0.428009673720226 0.428009673720226 0.428009673720226 0.428009673720226 ...
0.261356600327417 0.261356600327417 0.261356600327417 0.261356600327417 0.261356600327417 0.261356600327417 ...