ASP.NET Oracle SQL查询未正确结束？

Question

我是ASP.NET和Oracle SQL的新手。我试图创建一个长的SQL字符串（使用UNION ALL），然后将字符串传递给一个Data Handler类来处理剩下的事情。这个问题当然存在于我的SQL字符串中。

这里是我的代码，它运行完美首节：

sql = "SELECT 'DCS - HCA (81)', HCA_SENT_DCS, HCA_VALID_DCS, HCA_SUSPEND_DCS, HCA_REJECTED_DCS," 
sql &= " SUM(HCA_VALID_DCS + HCA_SUSPEND_DCS + HCA_REJECTED_DCS) As ""Total Returned""," 
sql &= " RESOLVED_CNT, SUM(HCA_REJECTED_DCS - RESOLVED_CNT) As ""To Do""" 
sql &= " FROM HUB_CDI_CONTROL_NBRS WHERE REPORT_DATE = :0 " 
_param.Add(dateSelected.ToString("dd-MMM-yyyy")) 
sql &= " GROUP BY HCA_SENT_DCS, HCA_VALID_DCS, HCA_SUSPEND_DCS, HCA_REJECTED_DCS," 
sql &= " RESOLVED_CNT" 

然而，当我尝试UNION这个SQL与另一个SELECT声明，我得到以下异常：

ORA-00933: SQL command not properly ended 

这是完整的代码：

sql = "SELECT 'DCS - HCA (81)', HCA_SENT_DCS, HCA_VALID_DCS, HCA_SUSPEND_DCS, HCA_REJECTED_DCS," 
sql &= " SUM(HCA_VALID_DCS + HCA_SUSPEND_DCS + HCA_REJECTED_DCS) As ""Total Returned""," 
sql &= " RESOLVED_CNT, SUM(HCA_REJECTED_DCS - RESOLVED_CNT) As ""To Do""" 
sql &= " FROM HUB_CDI_CONTROL_NBRS WHERE REPORT_DATE = :0 " 
sql &= " GROUP BY HCA_SENT_DCS, HCA_VALID_DCS, HCA_SUSPEND_DCS, HCA_REJECTED_DCS," 
sql &= " RESOLVED_CNT" 

sql &= " UNION ALL" 

sql &= "SELECT 'SFDC - HCA (82)', HCA_SENT_SFDC, HCA_VALID_SFDC, HCA_SUSPEND_SFDC, HCA_REJECTED_SFDC," 
sql &= " SUM(HCA_VALID_SFDC + HCA_SUSPEND_SFDC + HCA_REJECTED_SFDC) As ""Total Returned""," 
sql &= " RESOLVED_CNT, SUM(HCA_REJECTED_SFDC - RESOLVED_CNT) As ""To Do""" 
sql &= " FROM HUB_CDI_CONTROL_NBRS WHERE REPORT_DATE = :0 " 
sql &= " GROUP BY HCA_SENT_SFDC, HCA_VALID_SFDC, HCA_SUSPEND_SFDC, HCA_REJECTED_SFDC," 
sql &= " RESOLVED_CNT" 

_param.Add(dateSelected.ToString("dd-MMM-yyyy")) 
_DH.TheSQL = sql 
_DT = _DH.GetTableWithParameters(_param.ToArray) 

我是关注此代码的两部分：

1. 我是否正确调用_param.Add（）函数？由于我参考了两次参数，使用:0，我只需要使用_param.Add（）函数一次吗？

2. 我觉得我错误地使用了GROUP BY语法。当我试图在不使用GROUP BY的情况下运行查询时，Oracle对我大吼，但我不确定是否正确使用它们。从本质上讲，我只是说每一列我SELECTed到GROUP BY

否则，我肯定还有其他的错误，我很想念。请帮忙！

谢谢。

Answer 1

sql &= " UNION ALL" 
sql &= "SELECT 'SFDC - HCA (82)', HCA_SENT_SFDC, HCA_VALID_SFDC, HCA_SUSPEND_SFDC, HCA_REJECTED_SFDC," 

结果，在中间的某个地方：

... UNION ALLSELECT 'SFDC - HCA (82)', HCA_SENT_SFDC, ... 

注： “UNION ALLSELECT”

---

完整的代码与其他修复。我不相信你真的想要GROUP BY，加/减，你不需要SUM（）函数。为了在UNION ALL中有效，第一部分的所有列必须被命名/别名。

sql = "SELECT 'DCS - HCA (81)' Title, HCA_SENT_DCS, HCA_VALID_DCS, HCA_SUSPEND_DCS, HCA_REJECTED_DCS," 
sql &= " HCA_VALID_DCS + HCA_SUSPEND_DCS + HCA_REJECTED_DCS As ""Total Returned""," 
sql &= " RESOLVED_CNT, HCA_REJECTED_DCS - RESOLVED_CNT As ""To Do""" 
sql &= " FROM HUB_CDI_CONTROL_NBRS WHERE REPORT_DATE = :0 " 
sql &= " UNION ALL " 
sql &= "SELECT 'SFDC - HCA (82)', HCA_SENT_SFDC, HCA_VALID_SFDC, HCA_SUSPEND_SFDC, HCA_REJECTED_SFDC," 
sql &= " HCA_VALID_SFDC + HCA_SUSPEND_SFDC + HCA_REJECTED_SFDC As ""Total Returned""," 
sql &= " RESOLVED_CNT, HCA_REJECTED_SFDC - RESOLVED_CNT As ""To Do""" 
sql &= " FROM HUB_CDI_CONTROL_NBRS WHERE REPORT_DATE = :1 " 

_param.Add(dateSelected.ToString("dd-MMM-yyyy")) 
_param.Add(dateSelected.ToString("dd-MMM-yyyy")) ' 2nd one 
_DH.TheSQL = sql 
_DT = _DH.GetTableWithParameters(_param.ToArray)