Question

将两个结果集合并到T-SQL中的一个结果集中的最佳方法是什么？

SQL statment＃1：

SELECT 
    COUNT(t.col1) as 'Number of Responses', 
    t.col2 as 'Department'
FROM table t 
WHERE col3 IS NOT NULL
GROUP BY t.col1 
ORDER BY t.col1

SQL Statment＃1：

SELECT 
    COUNT(t.col1) as 'Total number of participants', 
    t.col2 as 'Department'
FROM table t 
GROUP BY t.col1 ORDER by t.col1

期望的结果集

回复数量|总人数参与者|系

Answer 1

SELECT
  SUM(case when t.col3 is not null then 1 else 0 end) 'Number of Responses',
  COUNT(t.col1) as 'Total number of participants',  
  t.col2 as 'Department'
FROM table t  
GROUP BY t.col1  
ORDER BY t.col1

加入两个结果集，在T-SQL中创建一个结果集

1 个答案: