假设我在DolphinDB发布端已设置了过滤列symbol,代码如下所示:
share streamTable(10000:0,`time`symbol`price`id, [TIMESTAMP,SYMBOL,DOUBLE,INT]) as trades setStreamTableFilterColumn(trades, `symbol)
我需要过滤只有symbol==000905的数据,我在python中应该如何写filter参数?{"symbol": ["000905",]}这样吗?
可以用np.array(['000905'])这样的方式,例如:
def handler(lst): print(lst) s.subscribe("192.168.1.103",8921,handler,"trades","action",0,False,np.array(['000905']))