消息8120，级别16，状态1，行5列在选择列表中无效，因为它未包含错误

Question

  

Msg 8120，Level 16，State 1，Line 5   列在选择列表中无效，因为它不包含在聚合函数或GROUP BY子句中。

这似乎是一个常见的错误，但我查找的每个结果都有一个group by子句或语句。我的例子没有。以下是使用的代码。有关如何解决此错误的任何想法？

 select year, qtr, area, industry, ownership, employment
 from indstry
 where ( area = '32001' or area = '32005' or area = '32007' or area = 
 '32009' or area = '32011' or area = '32013' or area ='32015' or area = 
 '32017' or area = '32019' or area = '32021' or area = '32023' or area = 
 '32027' or area = '32033' ) and year ='2016'
 union all
 select year, NULL as qtr, '99999' as Area, NULL as industry, NULL as 
 ownership, sum (employment) as employment
 From industry
 where ( area = '32001' or area = '32005' or area = '32007' or area = 
 '32009' or area = '32011' or area = '32013' or area ='32015' or area = 
 '32017' or area = '32019' or area = '32021' or area = '32023' or area = 
 '32027' or area = '32033' ) and year ='2016'