当前位置: 首页 > 图文教程 > 数据库 > MSSQL > sql 多条件组合查询,并根据指定类别找出所有最小子类别的SQL语句备忘

MSSQL
SQLServer中求两个字符串的交集
SQL Server 触发器 表的特定字段更新时,触发Update触发器
SQL 查询分析中使用net命令问题
SQLServer 批量导入目录文件
sql语言中delete删除命令语句详解
Linq to SQL 插入数据时的一个问题
一个简单的SQL 行列转换语句
SQLServer 常用语句(按功能分)
SQLServer 管理常用SQL语句
SQL Server 2000中的触发器使用
SQL小技巧 又快又简单的得到你的数据库每个表的记录数
Sql Server 2000删除数据库备份文件
批量更新数据库所有表中字段的内容,中木马后的急救处理
sqlserver 通用分页存储过程
远程连接局域网内的sql server 无法连接 错误与解决方法
目前用到的两个分页存储过程代码
sqlserver 多表关联时在where语句中慎用trim()方法
Sql2005注射辅助脚本[粗糙版]
sql 2005不允许进行远程连接可能会导致此失败的解决方法
MSSQL2005数据库备份导入MSSQL2000

MSSQL 中的 sql 多条件组合查询,并根据指定类别找出所有最小子类别的SQL语句备忘


出处:互联网   整理: 软晨网(RuanChen.com)   发布: 2009-09-13   浏览: 134 ::
收藏到网摘: n/a

多条件组合查询,并根据指定类别找出所有最小子类别的SQL语句备忘
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