SQL Federated Query and XML parsing example _mssql

SQL Federated Query and XML parsing instance

Here is an example of how to implement this feature:

(select A.ebillno, A.empname, A.applydate, B.hs_name, replace (A.summary,char (), '), char (), ') as SUMMARY, Cast (C.xmldata as XML). Value (' (/list/item/no/text ()) [1] ', ' NVARCHAR ') as No, cast (C.xmldata as XML). Value (' (/list /item/zje/text ()) [1] ', ' NVARCHAR ') as Zje, cast (C.xmldata as XML). Value (' (/list/item/yfje/text ()) [1] ', ' NVARCHAR (a) as Yfje, cast (C.xmldata as XML). Value (' (/list/item/bcje/text ()) [1] ', ' NVARCHAR ') as Bcje, cast (C.xmldata as XML). Value (' (/list/item/url/text ()) [1] ', ' NVARCHAR ') as URL, cast (C.xmldata as XML). Value (' (/list/item/remark/ Text ()) [1] ', ' NVARCHAR ') as BZ, cast (P.xmldata as XML). Value (' (/newdataset/table1/username/text ()) [1] ', ' NVARCHAR ') as Skrxm, (' http://...? Sid=3&mid=7281&pid= ' +a.pid as Bxdljdz from Ex_bill as a left join Ex_system_cfg as B on (a.billsystemid=b.hs_id a nd a.datasystemid=b.system_name) LEFT join (SELECT * FROM [10.2.3.39]. AspireworkFlow.dbo.RepeaingTable) as C on (c.keyword= ' URL ' and c.processid=a. PID) LEFT JOIN (SELECT * FROM [10.2.3.39]. AspireworkFlow.dbo.RepeaingTable) as D on (d.keyword= ' fkxx_new ' and d.processid=a.pid or d.keyword= ' fkxx ' and D. Processid=a.pid) LEFT JOIN (SELECT * to Ex_billextension) as P on A.billno=p.bill_no where applyempid= ' Zhongxun ' and a. Ebillno is not null and status>5 and status isn't in (200,100,7000) and a.applydate> ' 2011-01-01 ' and a.ht= ' are ' and cast ' ( D.xmldata as XML). Value (' (/list/item/skrxm/text ()) [1] ', ' NVARCHAR () ') is null union (select E.ebillno, E.empname, E. Applydate, F.hs_name, replace (replace (E.summary,char (), '), char (), ') as SUMMARY, cast (G.xmldata as XML). Value (' ( /list/item/no/text ()) [1] ', ' NVARCHAR ') as No, cast (G.xmldata as XML). Value (' (/list/item/zje/text ()) [1] ', ' NVARCHAR ") as Zje, cast (G.xmldata as XML). Value (' (/list/item/yfje/text ()) [1] ', ' NVARCHAR ') as Yfje, cast (g. XMLData as XML). Value (' (/list/item/bcje/text ()) [1] ', ' NVARCHAR ') as Bcje, cast (G.xmldata as XML). Value (' (/list/ Item/url/text ()) [1] ', ' NVARCHAR) as URL, cast (G.xmldata as XML). Value (' (/list/item/remark/text ()) [1] ', ' NVARCHAR ') as BZ, cast (H. XMLData as XML). Value (' (/list/item/skrxm/text ()) [1] ', ' NVARCHAR ') as Skrxm, (' http://...? Sid=3&mid=7281&pid= ' +e.pid as Bxdljdz from Ex_bill as e-left join Ex_system_cfg as F on (e.billsystemid=f.hs_id a nd e.datasystemid=f.system_name) LEFT join (SELECT * FROM [10.2.3.39]. AspireworkFlow.dbo.RepeaingTable) as G on (g.keyword= ' URLs ' and g.processid=e.pid) left join (SELECT * FROM [10.2.3.39]. AspireworkFlow.dbo.RepeaingTable) as h on (h.keyword= ' fkxx_new ' and h.processid=e.pid or h.keyword= ' fkxx ' and H. processid=e.pid) where applyempid= ' Zhongxun ' and e.ebillno are not null and status>5 and-Status not in (200,100,7000) a D e.applydate> ' 2011-01-01 ' and e.ht= ' are ' and cast (H.xmldata as XML). Value (' (/list/item/skrxm/text ()) [1] ', ' NVARCHAR ( ) is not NULL)

When writing SQL, the difficulty is not in the SQL itself, but logically, when you write this SQL, it's not that hard to find logic.

is to use the Union to put the two groups of query out of the table into one inside

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