rowCount

语法

rowCount(args...)

row 系列函数通用参数说明和计算规则请参考: 行计算系列(row 系列)

详情

逐行进行非空值的统计操作,返回一个长度与输入参数行数相同的向量。

例子

$ m=matrix([4.5 2.6 1.5, 1.5 4.8 5.9, 4.9 2.0 NULL]);
$ rowCount(m);
[3,3,2]

$ t1=table(1 NULL 3 NULL 5 as x, 6..10 as y);
$ t2=table(5 NULL 3 NULL 1 as a, 10..6 as b);
$ rowCount(t1);
 [2,1,2,1,2]

$ rowCount(t1[`x], t2, 1 NULL 2 NULL NULL);
[4,1,4,1,3]

$ t=table(`AAPL`MS`IBM`IBM`C as sym, [49.6, NULL, 29.52, NULL, 174.97] as price1, [175.23, NULL, 50.32, 51.29, 26.23] as price2);
$ select sym,rowCount(price1,price2) as count from t;

sym

count

AAPL

2

MS

0

IBM

2

IBM

1

C

2

相关函数: rowSize, count