PCB MS SQL sorting application---SQL Neighbor data interval value solution

Source: Internet
Author: User

One of the blog posts in the "PCB MS SQL sorting application---adjacent data and the same merge processing" This article should also be used in conjunction with the same technique, to achieve the adjacent data interval value solution


Original data: Before processing

Calculate interval value: After processing

SQL Code Implementation

DECLARE @table Table(RowNoINT, FlowtechnameVARCHAR( -))INSERT  into @table(Rowno,flowtechname)VALUES(1,'Sinking Copper')INSERT  into @table(Rowno,flowtechname)VALUES(4,'Drilling')INSERT  into @table(Rowno,flowtechname)VALUES(5,'Drilling')INSERT  into @table(Rowno,flowtechname)VALUES(6,'Drilling')INSERT  into @table(Rowno,flowtechname)VALUES(7,'Sinking Copper')INSERT  into @table(Rowno,flowtechname)VALUES(Ten,'Sinking Copper')INSERT  into @table(Rowno,flowtechname)VALUES( One,'Sinking Copper')INSERT  into @table(Rowno,flowtechname)VALUES( the,'Drilling')INSERT  into @table(Rowno,flowtechname)VALUES( -,'Sinking Copper')INSERT  into @table(Rowno,flowtechname)VALUES( -,'Drilling')INSERT  into @table(Rowno,flowtechname)VALUES( +,'Drilling')INSERT  into @table(Rowno,flowtechname)VALUES( A,'Drilling') SELECT *  from @tableSELECT min(RowNo) Minrank,MAX(RowNo) maxrank,flowtechname from   (SELECTFlowtechname,rowno,row_number () Over(Partition byFlowtechnameOrder  byRowNo)-RowNo Diffval from @table) TGROUP  byFlowtechname,diffvalORDER  by MAX(RowNo)

PCB MS SQL sorting application---SQL Neighbor data interval value solution

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