sql 多条件组合查询,并根据指定类别找出所有最

2023年 4月 16日 30.7k 0

复制代码 代码如下: DECLARE @PAGESIZE INT DECLARE @PAGEINDEX INT DECLARE @PAGECOUNT INT DECLARE @RECORDCOUNT INT SELECT @PAGESIZE=5 SELECT @PAGEINDEX=1 DECLARE @FIELDNAME VARCHAR(50) DECLARE @FIELDVALUE VARCHAR(50) DECLARE @OPERATION

复制代码 代码如下:DECLARE @PAGESIZE INT DECLARE @PAGEINDEX INT DECLARE @PAGECOUNT INT DECLARE @RECORDCOUNT INT SELECT @PAGESIZE=5 SELECT @PAGEINDEX=1 DECLARE @FIELDNAME VARCHAR(50) DECLARE @FIELDVALUE VARCHAR(50) DECLARE @OPERATION VARCHAR(50) --组合条件 DECLARE @WHERE NVARCHAR(1000) SELECT @WHERE=' WHERE NOTDISPLAY=0 ' DECLARE ABC CURSOR FOR SELECT FIELDNAME,FIELDVALUE,OPERATION FROM TBPARAMETERS OPEN ABC FETCH NEXT FROM ABC INTO @FIELDNAME,@FIELDVALUE,@OPERATION WHILE @@FETCH_STATUS=0 BEGIN     IF(@OPERATION = 'Like')         SELECT @WHERE=@WHERE + ' AND ' + @FIELDNAME + ' Like ''%'+@FIELDVALUE+'%'''     ELSE     BEGIN         IF(@FIELDNAME='CLASSID')         BEGIN             DECLARE @ROOTID INT             SELECT @ROOTID=@FIELDVALUE             --将指定类别的值的子类加入临时表             INSERT INTO TBTEMCLASS(ID) SELECT ID FROM TBSDINFOCLASS WHERE ROOTID=@ROOTID             --使用游标来将指定类别的最小类别提出放入临时表             DECLARE CLASSID CURSOR FOR             SELECT ID FROM TBTEMCLASS             OPEN CLASSID             FETCH NEXT FROM CLASSID INTO @ROOTID             WHILE @@FETCH_STATUS=0             BEGIN                 --如果判断有子类则将子类加入临时表,并删除该类别,以使游标在临时表中循环                 IF(EXISTS(SELECT ID FROM TBSDINFOCLASS WHERE ROOTID=@ROOTID))                 BEGIN                     INSERT INTO TBTEMCLASS(ID) SELECT ID FROM TBSDINFOCLASS WHERE ROOTID=@ROOTID                     DELETE FROM TBTEMCLASS WHERE ID=@ROOTID                 END                 FETCH NEXT FROM CLASSID INTO @ROOTID             END             CLOSE CLASSID             DEALLOCATE CLASSID             --将自身加入临时表             INSERT INTO TBTEMCLASS(ID) SELECT @FIELDVALUE             SELECT @WHERE=@WHERE +' AND CLASSID IN(SELECT ID FROM TBTEMCLASS)'         END         ELSE             SELECT @WHERE=@WHERE + ' AND ' + @FIELDNAME + @OPERATION+@FIELDVALUE     END     FETCH NEXT FROM ABC INTO @FIELDNAME,@FIELDVALUE,@OPERATION END CLOSE ABC DEALLOCATE ABC TRUNCATE TABLE TBPARAMETERS -- --计数语句 DECLARE @COUNTSQL NVARCHAR(500) SELECT @COUNTSQL=N'SELECT @RECORDCOUNT=COUNT(*) FROM TBSDINFO INNER JOIN TBUSER ON TBSDINFO.USERNAME=TBUSER.USERNAME ' SELECT @COUNTSQL=@COUNTSQL+@WHERE -- -- --执行统计 EXEC sp_executesql @COUNTSQL,      N'@RECORDCOUNT INT OUT',      @RECORDCOUNT OUT -- -- --计算页数 SET @PageCount = CEILING(@RecordCount * 1.0 / @PageSize) -- -- --查询语句 DECLARE @SQL NVARCHAR(2000) DECLARE @ORDERBY VARCHAR(100) SELECT @ORDERBY=' ORDER BY TBSDINFO.IsCommon DESC,TBSDINFO.CommonTime DESC,TBSDINFO.CreateTime DESC' IF(@PAGEINDEX=1) BEGIN     SELECT @SQL='INSERT INTO TBTEMINFO(ID,TITLE,REMARK,CREATETIME,ENDTIME,WEBDOMAIN,CLASSID,CLASSNAME,TYPEID,TYPENAME,PROVINCEID,PROVINCE,CITYID,CITY,COMPANYNAME,ADDRESS,USERTYPE) '     SELECT @SQL=@SQL+'SELECT TOP '+CONVERT(VARCHAR(4),@PAGESIZE)+' TBSDINFO.ID,TITLE,Remark,TBSDINFO.Createtime,EndTime, WebDomain,TBSDINFO.CLASSID,(SELECT CLASSNAME FROM TBSDINFOCLASS WHERE TBSDINFOCLASS.ID=TBSDINFO.CLASSID) AS CLASSNAME,TYPEID,(SELECT TYPENAME FROM TBSDINFOTYPE WHERE TBSDINFO.TYPEID=TBSDINFOTYPE.ID) AS TYPENAME,ProvinceID,(SELECT PROVINCE FROM TBPROVINCE WHERE TBPROVINCE.ID=PROVINCEID) AS PROVINCE,CityID,(SELECT CITY FROM TBCITY WHERE TBCITY.ID=CITYID) AS CITY,CompanyName,TBSDINFO.Address,UserType FROM TBSDINFO INNER JOIN TBUSER ON TBUSER.USERNAME=TBSDINFO.USERNAME'     SELECT @SQL=@SQL+@WHERE     SELECT @SQL=@SQL+@ORDERBY END ELSE BEGIN     DECLARE @MINRECORD INT     SELECT @MINRECORD=(@PAGEINDEX-1)*@PAGESIZE     SELECT @SQL='INSERT INTO TBTEMINFO(ID,TITLE,REMARK,CREATETIME,ENDTIME,WEBDOMAIN,CLASSID,CLASSNAME,TYPEID,TYPENAME,PROVINCEID,PROVINCE,CITYID,CITY,COMPANYNAME,ADDRESS,USERTYPE) '     SELECT @SQL=@SQL+'SELECT TOP '+CONVERT(VARCHAR(4),@PAGESIZE)+' TBSDINFO.ID, TITLE,Remark,TBSDINFO.Createtime,EndTime, WebDomain,TBSDINFO.CLASSID,(SELECT CLASSNAME FROM TBSDINFOCLASS WHERE TBSDINFOCLASS.ID=TBSDINFO.CLASSID) AS CLASSNAME,TYPEID,(SELECT TYPENAME FROM TBSDINFOTYPE WHERE TBSDINFO.TYPEID=TBSDINFOTYPE.ID) AS TYPENAME,ProvinceID,(SELECT PROVINCE FROM TBPROVINCE WHERE TBPROVINCE.ID=PROVINCEID) AS PROVINCE,CityID,(SELECT CITY FROM TBCITY WHERE TBCITY.ID=CITYID) AS CITY,CompanyName,TBSDINFO.Address,UserType FROM TBSDINFO INNER JOIN TBUSER ON TBUSER.USERNAME=TBSDINFO.USERNAME'     IF(@WHERE<>'')         SELECT @SQL=@SQL+@WHERE+' AND '     ELSE         SELECT @SQL=@SQL+' WHERE '             SELECT @SQL=@SQL+' TBSDINFO.ID NOT IN(SELECT TOP '+CONVERT(VARCHAR(4),@MINRECORD)+' TBSDINFO.ID FROM TBSDINFO INNER JOIN TBUSER ON TBUSER.USERNAME=TBSDINFO.USERNAME '+@WHERE+@ORDERBY+')'     SELECT @SQL=@SQL+@ORDERBY END --PRINT @SQL --执行查询 --查询的结果是将找到的记录放入临时表,再通过以下游标查询出相应的父类与根类记录 EXEC (@SQL) DECLARE @CLASSID INT DECLARE @ID INT DECLARE TEM CURSOR FOR SELECT ID,CLASSID FROM TBTEMINFO OPEN TEM FETCH NEXT FROM TEM INTO @ID,@CLASSID WHILE @@FETCH_STATUS=0 BEGIN     DECLARE @NS VARCHAR(500)     DECLARE @DS VARCHAR(200)     SELECT @NS=''     SELECT @DS=''     DECLARE @TEMROOTID INT     DECLARE @TEMTS VARCHAR(50)     SELECT @CLASSID=ID,@TEMTS=CLASSNAME,@TEMROOTID=ROOTID FROM TBSDINFOCLASS WHERE ID=@CLASSID     SELECT @NS=@TEMTS+'#'+@NS     SELECT @DS=CONVERT(VARCHAR(10),@CLASSID)+'#'+@DS     WHILE(@TEMROOTID>0)     BEGIN             SELECT @TEMROOTID=ROOTID,@CLASSID=ID,@TEMTS=CLASSNAME FROM TBSDINFOCLASS WHERE ID=@TEMROOTID         SELECT @NS=@TEMTS+'#'+@NS         SELECT @DS=CONVERT(VARCHAR(10),@CLASSID)+'#'+@DS     END     UPDATE TBTEMINFO SET NS=@NS,DS=@DS WHERE ID=@ID     FETCH NEXT FROM TEM INTO @ID,@CLASSID END CLOSE TEM DEALLOCATE TEM SELECT * FROM TBTEMINFO TRUNCATE TABLE TBTEMINFO TRUNCATE TABLE TBTEMCLASS

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