配售聯合查詢在結果

Question

如果有任何規則放置在JDBC結果聯合查詢任何人都可以建議？ 我在數據庫中的聯合查詢在那裏我得到的輸出...但是當我試圖把同樣的聯合查詢ResultSet中，

am getting an error:ASA Error -131: Syntax error near 'unionselect' on line ...

任何人都可以建議我，那是我出了問題......

在JSP頁面中查詢如下.....

String QueryString = 

"select CONVERT(VARCHAR(7),[startdatetime],111) AS [year-month],nm.nameLine1 as CompanyName, sum(datediff(hour, startdatetime, enddatetime)) as total" 
+" from servicerequestworklog as srl" 
+" inner join ServiceRequest sr on srl.ServiceRequestId = sr.ServiceRequestId" 
+" inner join Name nm on(sr.clientCustomerId = nm.customerId and nm.nameTypeId = 'OFIC')" 
+" where (startdatetime >= '08-01-2011 00:00:00.000' and enddatetime <= '10-31-2011 00:00:00.000')" 
+" group by CompanyName, [year-month]" 
+"union" 
+"select CONVERT(VARCHAR(7),[startdatetime],111) AS [year-month], 'ZZTOTAL' as CompanyName, sum(datediff(hour, startdatetime, enddatetime)) as total" 
+" from servicerequestworklog as srl" 
+"inner join ServiceRequest sr on srl.ServiceRequestId = sr.ServiceRequestId" 
+" where (startdatetime >= '08-01-2011 00:00:00.000' and enddatetime <= '10-31-2011 00:00:00.000')" 
+" group by [year-month]" 
+"order by CompanyName, [year-month]" ; 

Answer 1

您可以通過使用PreparedStatement（參數化查詢）避免這些類型的錯誤。我認爲您必須在union和select之間添加空格。