count 运算符count operator

• 10/29/2020
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返回输入记录集中的记录数。Returns the number of records in the input record set.

语法Syntax

T | count

参数Arguments

T ：待计算记录数的表格数据。T : The tabular data whose records are to be counted.

返回Returns

此函数返回包含单个记录且列类型为 long 的表。This function returns a table with a single record and column of type long. 唯一单元格的值是 T 中的记录数。The value of the only cell is the number of records in T .

示例Example

StormEvents | count