在Big Query中查找特定列中包含Null值的所有行

Question

有没有办法改善以下几点？我需要在特定列中使用NULL值计算所有行。

SELECT
  SUM(IF(column1 IS NULL, 1, 0)) AS column1, 
  SUM(IF(column2 IS NULL, 1, 0)) AS column2
FROM 
  `dataset.table`;

Answer 1

其中一个选择：

#standardSQL
SELECT
  COUNTIF(column1 IS NULL) AS column1,
  COUNTIF(column2 IS NULL) AS column2
FROM `project.dataset.table`   

或者（只是为您提供几个选项）：

#standardSQL
SELECT
  COUNT(1) - COUNT(column1) AS column1,
  COUNT(1) - COUNT(column2) AS column2
FROM `project.dataset.table`