在Bigquery中,可以使用COALESCE函数将null值转换为非null值并进行计算,也可以使用IFNULL函数将null值替换为指定的值进行计算。 示例代码如下:
SELECT COUNT(COALESCE(column_name,1)) AS count_not_nulls, COUNT(column_name) AS count_with_nulls FROM table_name;
SELECT COUNT(IFNULL(column_name,0)) AS count_not_nulls, COUNT(column_name) AS count_with_nulls FROM table_name;