选择并加入必须出现在GROUP BY错误子句或聚合函数

Question

我试图做到这一点使用：

SELECT *, 
case when SUM(fld_allocated_time)/24 < fld_allocated_days 
then 'OK' 
else 'NOK' 
end as Alocated 
from 
(
SELECT tbl_project.fld_id, tbl_project.fld_allocated_days, 
tbl_project_timesheet.fld_allocated_time 
FROM "SD_PRJ".tbl_project 
INNER JOIN "SD_PRJ".tbl_project_timesheet 
ON tbl_project.fld_id=tbl_project_timesheet.fld_id 
) AS Alias 

，我得到这个错误：

ERROR: column "total.fld_id" must appear in the GROUP BY clause or be used in an aggregate function 
SQL state: 42803 
Character: 8 

TBL =表
FLD =列
SD_PRJ =架构名称

Answer 1

如果要计算一个总和查询的所有行，并与各行fld_allocated_days比较，那么你可以试试这个：

with Alias as (
SELECT * from (
    SELECT tbl_project.fld_id, tbl_project.fld_allocated_days, 
      tbl_project_timesheet.fld_allocated_time 
    FROM "SD_PRJ".tbl_project 
     INNER JOIN "SD_PRJ".tbl_project_timesheet 
     ON tbl_project.fld_id=tbl_project_timesheet.fld_id 
) 
select a.*, 
     case when b.sm < fld_allocated_days then 'OK' else 'NOK' end as Alocated 
from Alias a cross join 
    (select SUM(fld_allocated_time)/24 sm from Alias) b; 

不过，我想你需要这样的：

SELECT tbl_project.fld_id, 
     case when SUM(tbl_project_timesheet.fld_allocated_time)/24 
       < fld_allocated_days 
      then 'OK' 
      else 'NOK' 
     end as Alocated 
FROM "SD_PRJ".tbl_project 
    INNER JOIN "SD_PRJ".tbl_project_timesheet 
    ON tbl_project.fld_id=tbl_project_timesheet.fld_id 
GROUP BY tbl_project.fld_id, tbl_project.fld_allocated_days; 

Answer 2

在选择列表中添加列的其余部分的GROUP BY像

) AS Alias 
GROUP BY fld_id, fld_allocated_days, fld_allocated_time