SqlServer：SqlServer（sql，游标，定时作业,行转列，列转行，公用表达式递归，merge合并）

1.加载驱动：

　　

Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
DriverManager.getConnection("jdbc:sqlserver://192.168.0.63:1433;DatabaseName=test","sa","hnzsfwq");

2.分页：

 --top not in方式
select top 条数 *  from tablename
where Id not in (select top 条数*页数  Id from tablename)  

--ROW_NUMBER() OVER()方式
 select * from (
　　　　select *, ROW_NUMBER() OVER(Order by Id ) AS RowNumber from tablename
　　) as b
　　where RowNumber BETWEEN 当前页数-1*条数 and 页数*条数     

--offset fetch next方式
--SQL2012以上的版本才支持
select * from tablename
 order by Id offset 页数 row fetch next 条数 row only 

3.查询数据库有几张这张表：

　　SELECT COUNT(1) AS NUM FROM [INFORMATION_SCHEMA].[TABLES]WHERE TABLE_NAME= 'TABLENAME'

4.sql文件，动态判断表中字段是否重复：

　　IF NOT EXISTS(

　　　　SELECT * 

　　　　FROM [INFORMATION_SCHEMA].[COLUMNS]

　　　　WHERE [TABLE_NAME] = '$tableName$' AND COLUMN_NAME = '$template_ID$'

　　)

　　BEGIN 

　　　　ALTER TABLE [$tableName$]

　　　　ADD [$template_ID$] [INT]

　　END

　　IF NOT EXISTS(

　　SELECT * 

　　FROM [INFORMATION_SCHEMA].[COLUMNS]

　　WHERE [TABLE_NAME] = '$tableName$' AND COLUMN_NAME = '$table_Name$'

　　)

　　BEGIN 

　　　　ALTER TABLE [$tableName$]

　　　　ADD [$table_Name$] varchar(1000)

　　END

5. 多条件查询：

　　SELECT 

　　　　SOURCE_TBL_NAME

　　FROM

　　　　[TBL_TABLE_MAPPING]

　　WHERE

　　　　TEMP_ID=1

　　AND TARGET_TBL_NAME !='query'

　　AND TABLEORSQL='sql'

　　AND DB_TYPE=0

6.循环：

　　Declare @ｉ INT

　　SET @i = 5001

　　WHILE  @i <50000

　　Begin

　　INSERT INTO s_student (id)

  　 VALUES

　　　　(@i)

　　SET@i=@i+1

　　END

7.查询某个表有多少列：

　　SELECT

　　　　COUNT(1)

　　FROM

　　　　SYSCOLUMNS

　　WHERE

　　　　ID=OBJECT_ID('表名')

8.查询当前时间：

　　SELECT  GETDATE()

9.批量插入：

　　URL:

　　　　192.168.0.70:9898/SpagoBIETL/unitTemplateMapping/saveMapping.shtml?mappings[0].unitCode=110&mappings[0].templateID=111

　　前端传的是一个数组

　　Controller:

　　　　　　参数：实体类（包含 list<UnitTemplateMapping> mapping 属性）

　　list<UnitTemplateMapping> mapping

<insert id="insertBatch">
    insert into TBL_UNIT_TEMAPLATE_MAPPING(UNIT_CODE,SOFTWARE_ID,TEMPLATE_ID) VALUES
    <foreach collection="list" item="mapping" separator=",">
          (#{mapping.unitCode},#{mapping.softwareId},#{mapping.templateId})
    </foreach>
</insert> 

　　 foreach的主要用在构建in条件中，它可以在SQL语句中进行迭代一个集合。foreach元素的属性主要有item，index，collection，open，separator，close。item表示集合中每一个元素进行迭代时的别名，index指定一个名字，用于表示在迭代过程中，每次迭代到的位置，open表示该语句以什么开始，separator表示在每次进行迭代之间以什么符号作为分隔符，close表示以什么结束，在使用foreach的时候最关键的也是最容易出错的就是collection属性，该属性是必须指定的，但是在不同情况下，该属性的值是不一样的，主要有一下3种情况： 

1. 如果传入的是单参数且参数类型是一个List的时候，collection属性值为list .
2. 如果传入的是单参数且参数类型是一个array数组的时候，collection的属性值为array .
3. 如果传入的参数是多个的时候，我们就需要把它们封装成一个Map了，当然单参数也可以封装成map，实际上如果你在传入参数的时候，在MyBatis里面也是会把它封装成一个Map的，map的key就是参数名，所以这个时候collection属性值就是传入的List或array对象在自己封装的map里面的key.

　　

<!--List:forech中的collection属性类型是List,collection的值必须是:list,item的值可以随意,Dao接口中参数名字随意 -->
    <select id="getEmployeesListParams" resultType="Employees">
        select *
        from EMPLOYEES e
        where e.EMPLOYEE_ID in
        <foreach collection="list" item="employeeId" index="index"
            open="(" close=")" separator=",">
            #{employeeId}
        </foreach>
    </select>

    <!--Array:forech中的collection属性类型是array,collection的值必须是:list,item的值可以随意,Dao接口中参数名字随意 -->
    <select id="getEmployeesArrayParams" resultType="Employees">
        select *
        from EMPLOYEES e
        where e.EMPLOYEE_ID in
        <foreach collection="array" item="employeeId" index="index"
            open="(" close=")" separator=",">
            #{employeeId}
        </foreach>
    </select>

    <!--Map:不单单forech中的collection属性是map.key,其它所有属性都是map.key,比如下面的departmentId -->
    <select id="getEmployeesMapParams" resultType="Employees">
        select *
        from EMPLOYEES e
        <where>
            <if test="departmentId!=null and departmentId!=''">
                e.DEPARTMENT_ID=#{departmentId}
            </if>
            <if test="employeeIdsArray!=null and employeeIdsArray.length!=0">
                AND e.EMPLOYEE_ID in
                <foreach collection="employeeIdsArray" item="employeeId"
                    index="index" open="(" close=")" separator=",">
                    #{employeeId}
                </foreach>
            </if>
        </where>
    </select>

10.存储过程（游标）：

　　双层游标

USE [wqb_upgrade_test]
GO
/****** Object:  StoredProcedure [dbo].[addFinancialBatchExecuteTask]    Script Date: 2018/1/10 18:48:01 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER PROCEDURE [dbo].[addFinancialBatchExecuteTask]

AS
    BEGIN

    create table unitCodeAccountCode(unitCode varchar(100),accountCode varchar(100));
    DECLARE @INTERMEDIATEDB_NAME varchar(1000)
    DECLARE @belong_unit_code varchar(1000)
    DECLARE @DATA_YEAR varchar(1000)
    DECLARE My_Cursor CURSOR
    FOR
        select distinct w.belong_unit_code as  belongUnitCode, w.DATA_YEAR as  dataYear,s.INTERMEDIATEDB_NAME as interMediatedb
        from
            Spagobietl.dbo.TBL_DATACOLLECTION as s,
            Spagobietl.dbo.TBL_ORIGINAL_DATA_REGISTER as w,
            ETL_COLLECTION as c
            where
            s.exec_stat=2
            and
            s.uuid=w.uuid
            and s.INTERMEDIATEDB_NAME is not null
            and s.INTERMEDIATEDB_NAME in (select name from sys.databases) 

        OPEN My_Cursor;
        FETCH NEXT FROM My_Cursor INTO @belong_unit_code,@DATA_YEAR,@INTERMEDIATEDB_NAME
        WHILE @@FETCH_STATUS = 0
            BEGIN
                DECLARE @fname varchar(1000)
                set @fname = @INTERMEDIATEDB_NAME
                DECLARE @s Nvarchar(1000)
                set @s = 'select 会计电子账簿编号 as accountCode ,单位代码 as unitCode from ['+@INTERMEDIATEDB_NAME+'].dbo.基础表_财务类_电子账簿信息表 ';
                DECLARE @Mx varchar(1000)
                set @Mx =
                'DECLARE My_Cursor2 CURSOR '+                     //此处须拼字符串，执行sql
                'FOR  (  '+@s+' )'+　　　　　　// for的括号里不能用 exec
                    'OPEN My_Cursor2; '+
                'DECLARE @accountCode varchar(8000); '+
                'DECLARE @unitCode varchar(8000) '+
                'FETCH NEXT FROM My_Cursor2 INTO @accountCode ,@unitCode '+
                ' WHILE @@FETCH_STATUS = 0 '+
                    'BEGIN '+
                        'FETCH NEXT FROM My_Cursor2 INTO @accountCode,@unitCode '+
                        'insert into unitCodeAccountCode(unitCode,accountCode) values(@unitCode,@accountCode); '+
                    'END '+
                'CLOSE My_Cursor2; '+
                'DEALLOCATE My_Cursor2;'

                execute(@Mx)

                FETCH NEXT FROM My_Cursor INTO @belong_unit_code,@DATA_YEAR,@INTERMEDIATEDB_NAME
            END
        CLOSE My_Cursor;
        DEALLOCATE My_Cursor;

    DECLARE @methodModelId int;--方法ID
    DECLARE @unitCode varchar(8000);--单位代码
    DECLARE @year int;--年份
    DECLARE @accountCode varchar(1000);--账套编码
    DECLARE @methodInstanceId int;--方法实例ID

    DECLARE UnitCodeYearMethodIdCursor CURSOR
    FOR
    select methodModelId,belong_unit_code,DATA_YEAR,accountCode
    from (
                SELECT  methodModelID
    FROM    auditMethodModel m
            JOIN auditItem i ON m.itemID = i.itemID
            JOIN dbo.auditCategory c ON c.CategoryID = i.CategoryID
    WHERE   c.isEnable = 1
    and realTime = 1
            AND ( ( i.isEnable = 1
                    AND m.isEnable = 1
                  )
                  OR ( i.isEnable = 1
                       AND m.isEnable IS NULL
                     )
                  OR ( i.isEnable IS NULL )
                )
            AND ( m.externalDataSource IS NULL
                  OR LEN(RTRIM(m.externalDataSource)) = 0
                )
            AND ( m.methodType = 'model'
                  OR m.methodType IS NULL
                )
            AND ( m.autidType != '人工' )
            AND ( m.isPass = 1 )
            AND NOT EXISTS ( SELECT TOP 1
                                    1
                             FROM   paramModel p
                             WHERE  m.methodModelID = p.methodID
                                    AND p.paramName != '会计核算账套'
                                    AND p.paramName != '预算年度'
                                    AND p.paramName != '单位编码' )
            AND EXISTS ( SELECT TOP 1
                                1
                         FROM   paramModel p
                         WHERE  m.methodModelID = p.methodID
                                AND p.paramName = '会计核算账套' )
    ) as t_methodId
    cross join
    (
        --查出年份和单位账号，paramInstance需要的
        select distinct w.belong_unit_code as  belong_unit_code, w.DATA_YEAR as  DATA_YEAR,s.INTERMEDIATEDB_NAME as interMediatedb
        from
            Spagobietl.dbo.TBL_DATACOLLECTION as s,
            Spagobietl.dbo.TBL_ORIGINAL_DATA_REGISTER as w,
            ETL_COLLECTION as c
            where
            s.exec_stat=2
            and
            s.uuid=w.uuid
            and s.INTERMEDIATEDB_NAME is not null
            and s.INTERMEDIATEDB_NAME in (select name from sys.databases) 

        --and s.id not in (select distinct collid from dbo.ETL_COLLECTION where collid is not null)
    ) as t_unitcodeyear
     cross join
     (
        SELECT distinct unitCode ,accountCode
             FROM unitCodeAccountCode
     ) as ucc

     --打开游标
    OPEN UnitCodeYearMethodIdCursor;

    --遍历数据开始
    FETCH NEXT FROM UnitCodeYearMethodIdCursor INTO @methodModelId,@unitCode,@year,@accountCode;
    WHILE @@FETCH_STATUS = 0
    BEGIN
    --插入方法实例
        insert into dbo.autidMethodInstance(
            methodModelID,
            executionState,
            isDeleted
        )
        values(
            @methodModelId,
            'queuing',
            0
        )

        SELECT  @methodInstanceId = @@IDENTITY;

        --插入批量任务表
        insert into dbo.batchAudit(
            accountCode,
            modelId,
            unitCode,
            year,
            methodInstanceId,
            executionState,
            auditType,
            isEnable,
            addDate
        )
        values(
            @accountCode,
            @methodModelId,
            @unitCode,
            @year,
            @methodInstanceId,
            'queuing',
            'business',
            1,
            CONVERT(VARCHAR,GETDATE(),23)
        )

        --添加参数实例
        DECLARE @paramModelId INT;
        DECLARE @paramModelName VARCHAR(100);
        DECLARE paramModelCursor CURSOR
        FOR
            SELECT  paramModelID ,
                    paramName
            FROM    dbo.paramModel
            WHERE   methodID = @methodModelId;
        OPEN paramModelCursor;
        FETCH NEXT FROM paramModelCursor INTO @paramModelId,@paramModelName;
        WHILE @@FETCH_STATUS = 0
            BEGIN
                IF @paramModelName = '单位编码'
                    BEGIN
                        INSERT  dbo.paramInstance
                                ( methodInstaceID ,
                                  paramModelID ,
                                  paramValue ,
                                  paramName
                                )
                        VALUES  ( @methodInstanceId ,
                                  @paramModelId ,
                                  @unitCode ,
                                  '单位编码'
                                );
                    END;
                ELSE
                    IF @paramModelName = '预算年度'
                        BEGIN
                            INSERT  dbo.paramInstance
                                    ( methodInstaceID ,
                                      paramModelID ,
                                      paramValue ,
                                      paramName
                                    )
                            VALUES  ( @methodInstanceId ,
                                      @paramModelId ,
                                      @year ,
                                      '预算年度'
                                    );
                        END;
                FETCH NEXT FROM paramModelCursor INTO @paramModelId,@paramModelName;
            END;
        CLOSE paramModelCursor;
        DEALLOCATE paramModelCursor;

        FETCH NEXT FROM UnitCodeYearMethodIdCursor INTO @methodModelId,@unitCode,@year,@accountCode;
    END;

     --关闭游标
    CLOSE UnitCodeYearMethodIdCursor;
    --释放游标
    DEALLOCATE UnitCodeYearMethodIdCursor;

    insert into dbo.ETL_COLLECTION(
        COLLID,
        ADDDATE
    )
    select distinct s.id,GETDATE()
    from Spagobietl.dbo.TBL_DATACOLLECTION s,Spagobietl.dbo.TBL_ORIGINAL_DATA_REGISTER w
    where s.status=3
    and s.uuid=w.uuid
    and s.id not in (select distinct collid from dbo.ETL_COLLECTION where collid is not null)

    exec('drop table  [dbo].[unitCodeAccountCode]')
END

　　

　　游标实例：

USE [wqb_upgrade_test]
GO
/****** Object:  StoredProcedure [dbo].[addBusinessBatchExecuteTask]    Script Date: 01/09/2018 21:13:56 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER PROCEDURE [dbo].[addBusinessBatchExecuteTask]

AS
    BEGIN

    DECLARE @methodModelId int;--方法ID
    DECLARE @unitCode varchar(8000);--单位代码
    DECLARE @year int;--年份

    DECLARE @methodInstanceId int;--方法实例ID

    DECLARE UnitCodeYearMethodIdCursor CURSOR
    FOR
    select methodModelId,belong_unit_code,DATA_YEAR
    from (
                SELECT  methodModelID
    FROM    auditMethodModel m
            JOIN auditItem i ON m.itemID = i.itemID
            JOIN dbo.auditCategory c ON c.CategoryID = i.CategoryID
    WHERE   c.isEnable = 1
            AND realTime = 1
            AND ( ( i.isEnable = 1
                    AND m.isEnable = 1
                  )
                  OR ( i.isEnable = 1
                       AND m.isEnable IS NULL
                     )
                  OR ( i.isEnable IS NULL )
                )
            AND ( m.externalDataSource IS NULL
                  OR LEN(RTRIM(m.externalDataSource)) = 0
                )
            AND ( m.methodType = 'model'
                  OR m.methodType IS NULL
                )
            AND ( m.autidType != '人工' )
            AND ( m.isPass = 1 )

            AND NOT EXISTS ( SELECT TOP 1
                                    1
                             FROM   paramModel p
                             WHERE  m.methodModelID = p.methodID
                                    AND p.paramName != '会计核算账套'
                                    AND p.paramName != '预算年度'
                                    AND p.paramName != '单位编码' )
            AND EXISTS ( SELECT TOP 1
                                1
                         FROM   paramModel p
                         WHERE  m.methodModelID = p.methodID
                                AND p.paramName = '会计核算账套' )
    ) as t_methodId
    cross join
    (
        --查出年份和单位账号，paramInstance需要的
        select distinct w.belong_unit_code as  belong_unit_code,w.DATA_YEAR as DATA_YEAR
        from Spagobietl.dbo.TBL_DATACOLLECTION s,Spagobietl.dbo.TBL_ORIGINAL_DATA_REGISTER w
        where s.status=3
        and s.uuid=w.uuid
        --and s.id not in (select distinct collid from dbo.ETL_COLLECTION where collid is not null)
    ) as t_unitcodeyear

     --打开游标
    OPEN UnitCodeYearMethodIdCursor;

    --遍历数据开始
    FETCH NEXT FROM UnitCodeYearMethodIdCursor INTO @methodModelId,@unitCode,@year;
    WHILE @@FETCH_STATUS = 0
    BEGIN
    --插入方法实例
        insert into dbo.autidMethodInstance(
            methodModelID,
            executionState,
            isDeleted
        )
        values(
            @methodModelId,
            'queuing',
            0
        )

        SELECT  @methodInstanceId = @@IDENTITY;

        --插入批量任务表
        insert into dbo.batchAudit(
            modelId,
            unitCode,
            year,
            methodInstanceId,
            executionState,
            auditType,
            isEnable,
            addDate
        )
        values(
            @methodModelId,
            @unitCode,
            @year,
            @methodInstanceId,
            'queuing',
            'business',
            1,
            CONVERT(VARCHAR,GETDATE(),23)
        )

        --添加参数实例
        DECLARE @paramModelId INT;
        DECLARE @paramModelName VARCHAR(100);
        DECLARE paramModelCursor CURSOR
        FOR
            SELECT  paramModelID ,
                    paramName
            FROM    dbo.paramModel
            WHERE   methodID = @methodModelId;
        OPEN paramModelCursor;
        FETCH NEXT FROM paramModelCursor INTO @paramModelId,@paramModelName;
        WHILE @@FETCH_STATUS = 0
            BEGIN
                IF @paramModelName = '单位编码'
                    BEGIN
                        INSERT  dbo.paramInstance
                                ( methodInstaceID ,
                                  paramModelID ,
                                  paramValue ,
                                  paramName
                                )
                        VALUES  ( @methodInstanceId ,
                                  @paramModelId ,
                                  @unitCode ,
                                  '单位编码'
                                );
                    END;
                ELSE
                    IF @paramModelName = '预算年度'
                        BEGIN
                            INSERT  dbo.paramInstance
                                    ( methodInstaceID ,
                                      paramModelID ,
                                      paramValue ,
                                      paramName
                                    )
                            VALUES  ( @methodInstanceId ,
                                      @paramModelId ,
                                      @year ,
                                      '预算年度'
                                    );
                        END;
                FETCH NEXT FROM paramModelCursor INTO @paramModelId,@paramModelName;
            END;
        CLOSE paramModelCursor;
        DEALLOCATE paramModelCursor;

        FETCH NEXT FROM UnitCodeYearMethodIdCursor INTO @methodModelId,@unitCode,@year;
    END;

     --关闭游标
    CLOSE UnitCodeYearMethodIdCursor;
    --释放游标
    DEALLOCATE UnitCodeYearMethodIdCursor;

    insert into dbo.ETL_COLLECTION(
        COLLID,
        ADDDATE
    )
    select distinct s.id,GETDATE()
    from Spagobietl.dbo.TBL_DATACOLLECTION s,Spagobietl.dbo.TBL_ORIGINAL_DATA_REGISTER w
    where s.status=3
    and s.uuid=w.uuid
    and s.id not in (select distinct collid from dbo.ETL_COLLECTION where collid is not null)

END

11.创建笛卡尔积向某张表插入数据：

　　

 insert into [dbo].[TBL_UNIT_FINANCIAL] 

 SELECT * FROM ( SELECT UNIT_CODE FROM TBL_UNIT WHERE uk_number IS NOT NULL)B
 CROSS JOIN (

SELECT '财政专户账' AS A,            '专户账' AS Z    UNION
SELECT '工会账' AS A  ,                '工会账' AS Z     UNION
SELECT '机关(事业)财务账' AS A  ,    '财务账' AS Z     UNION
SELECT '基建账' AS A  ,                '基建账' AS Z     UNION
SELECT '其他' AS A  ,                '其他' AS Z     UNION
SELECT '系统财务账' AS A,            '系统账' AS Z    

 )A

12.差集（查询A内，不包含B的数据）

　　union（联系结果集，自带去重）

13.java调用存储过程：

　　　　　　　　

14.CASE when ，not  EXISTS

select distinct t.belong_unit_code,t.belong_unit_name,t.FINANCIAL_DATD_TYPE,
            (
                case when msg like'%还原失败%' then '还原失败'
                     when msg like'%采集失败%' then '采集失败'
                     when msg like'%服务器信息不完整%' then '服务器信息不完整,无法自动采集'
                     when msg like'%模板匹配失败%' then '模板匹配失败:未匹配到模板'
                     when msg like'%无法解析%' then '无法解析备份类型：通用软件备份'
                     when msg like'%文件服务器上无此文件%' then '文件服务器上无此文件'
                     when msg like'%服务器中断执行%' then '服务器中断执行'
                     when msg like'%压缩文件不合法%' then '压缩文件不合法'
                     when msg like'%上报客户端文件解密出错:解密失败%' then '上报客户端文件解密出错:    解密失败'

                 end
            ) msg
            FROM [dbo].[TBL_ORIGINAL_DATA_REGISTER] t
            WHERE CONVERT(VARCHAR,t.submit_time,23) BETWEEN  @startDate AND @endDate
            AND t.FINANCIAL_DATD_TYPE IS NOT NULL
             AND  NOT EXISTS (
                SELECT 1 FROM     [dbo]. [TBL_ORIGINAL_DATA_REGISTER]  b
                WHERE msg IS NULL AND t.submit_unit_code=b.belong_unit_code
                AND CONVERT(VARCHAR,b.submit_time,23) BETWEEN  @startDate AND @endDate
                AND b.FINANCIAL_DATD_TYPE = t.FINANCIAL_DATD_TYPE
             )     

15.游标抓取，修改数据，标准游标

    标准游标：

    DECLARE @cloumn varchar(8000);
    DECLARE @type varchar(8000);
    DECLARE @is varchar(8000);
    DECLARE classCursor CURSOR
        FOR
            SELECT 字段,类型,是否主键 FROM dbo.班级表
        OPEN classCursor
        --将查询出来的数据放入声明的变量
         FETCH NEXT FROM classCursor INTO @cloumn,@type,@is;
         WHILE @@FETCH_STATUS = 0

         BEGIN

            SELECT @cloumn+','
            --取出下一条数据
            FETCH NEXT FROM classCursor INTO @cloumn,@type,@is;
        END
        --关闭游标
        CLOSE classCursor
        --释放游标
        DEALLOCATE classCursor ;
        

  

    游标抓取，修改数据

    DECLARE @dwszdxzqhdm_code varchar(100);
    DECLARE @dwszdxzqhmc_name varchar(100);
    DECLARE @unit_name varchar(100);
    DECLARE zz CURSOR
    FOR
        SELECT t1.单位所在地行政区划名称 AS dwszdxzqhmc_name,t1.单位所在地行政区划代码 AS dwszdxzqhdm_code,t2.unit_name
            FROM [czcw_gh].[dbo].[基础表_部门决算_单位信息表] t1,[Spagobietl].[dbo].[tbl_unit] t2
            WHERE t1.单位名称 = t2.unit_name
            AND t2.uk_number IS NOT NULL
            AND LEN(t2.uk_serial_number)>0

    OPEN zz;
    FETCH NEXT FROM zz INTO @dwszdxzqhdm_code,@dwszdxzqhmc_name,@unit_name;
    WHILE @@FETCH_STATUS = 0

    BEGIN
        UPDATE [Spagobietl].[dbo].[tbl_unit]  SET [dwszdxzqhdm_code]=@dwszdxzqhdm_code,[dwszdxzqhmc_name]=@dwszdxzqhmc_name
        WHERE [unit_name]=@unit_name

        FETCH NEXT FROM zz INTO @dwszdxzqhdm_code,@dwszdxzqhmc_name,@unit_name;
       END;
    CLOSE zz;
    DEALLOCATE zz;

16.stuff , replace

17.多行合并一行：

　　select stuff(
　　　　(select n.errorInfo+''
　　　　from(
　　　　　　　　SELECT info as errorInfo
　　　　　　　　FROM [Spagobietllog].[dbo].[TBL_LOG_DATACOLLECTION] ld
　　　　　　　　WHERE BIZID IN(
　　　　　　　　　　SELECT TOP 1 dc.ID
　　　　　　　　　　FROM spagobietl.dbo.TBL_DATACOLLECTION dc
　　　　　　　　　　WHERE dc.UUID = #{errorUUID, jdbcType=VARCHAR} AND dc.EXEC_STAT = 3
　　　　　　　　　　ORDER BY dc.ID
　　　　　　　)
　　　　　　　AND ld.LEVEL = 'ERROR' AND ld.INFO IS NOT NULL AND LEN(ld.INFO)>0
　　　　　　　AND ld.INFO NOT LIKE '%被取消%'
　　　　) as n for xml path('')),1,1,'') as info

　　　　select id,valuelist=stuff((select ','+value from tb as b where b.ID=a.ID for xml path('')),1,1,'')
　　　 from tb as a
　　　 group by id

　　　　

 SELECT   STUFF(( SELECT  ',' + 字段 FROM dbo.班级表 AS b FOR XML PATH('')), 1, 1, '') valuelist 

18.开窗，分区函数：

　　

　　

　　

19.创建中间表，创建自增字段：

--#tableName  中间表   IDENTITY(INT,初始值，增加值)
select RowNum=IDENTITY(INT,16,6),Name into #T from dbo.Test   

select * from #T  

DROP TABLE #T;  

20.查询出表结构，游标拼创建表的sql

    DECLARE @cloumn varchar(8000);
    DECLARE @type varchar(8000);
    DECLARE @is varchar(8000);
    DECLARE @allColumn varchar(8000);
    DECLARE @tempColumn varchar(8000);
    DECLARE @tempCore VARCHAR(8000)
    SET @tempCore = ''
    SET @tempColumn =''
    SET @allColumn = 'create table aa('
    DECLARE classCursor CURSOR
        FOR
            SELECT 字段,类型,是否主键 FROM dbo.班级表
        OPEN classCursor

         FETCH NEXT FROM classCursor INTO @cloumn,@type,@is;
         WHILE @@FETCH_STATUS = 0

         BEGIN
           IF(@is='是')
                begin
                     set @tempCore ='primary key'
                END
            ELSE
                BEGIN
                    set @tempCore =''
                end
            SET  @tempColumn = @tempColumn+@cloumn+' '+@type+' '+@tempCore+','

            FETCH NEXT FROM classCursor INTO @cloumn,@type,@is;
        END

        CLOSE classCursor

        DEALLOCATE classCursor ;

         SELECT @allColumn+LEFT(@tempColumn,LEN(@tempColumn)-1)+')'

21. 获得当前用户和所在用户下的所有表名：

 --获得当前用户和所在用户下的所有表名
  SELECT o2.name 用户名,o.name 表名
  FROM sys.sysobjects o LEFT JOIN sys.sysusers o2
  ON o.uid = o2.uid
  WHERE o.type = 'U'

22.UNION联结结果集：（每列的个数必须一样且类型必须相同，UNION去重，UNION ALL不去重）

SELECT a.年份,SUM(a.[每月数据量大小（byte）])/1024.0/1024 每年数据量总大小,
 max(a.[每月数据量大小（byte）])/1024.0/1024 每月最大数据量,
 min(a.[每月数据量大小（byte）])/1024.0/1024 每月最小数据量,
 avg(a.[每月数据量大小（byte）])/1024.0/1024 平均每月数据量大小

FROM (
    SELECT *, 't1' as  'tname' FROM [郑大二附院住院部].[dbo].[brryxx表$] union all
    select *, 't2' as  'tname'from   [郑大二附院住院部].[dbo].[yje表$] union all
    select *, 't3' as  'tname'from   [郑大二附院住院部].[dbo].[zyb_cybrjs表$] union all
    select *, 't4' as  'tname' from   [郑大二附院住院部].[dbo].[zyb_sflsz_cybr表$] union all

    select *, 't5' as  'tname' from   [郑大二附院门诊部].dbo.mz_tb_brjzxx表$ union all
    select *, 't6' as  'tname' from   郑大二附院门诊部.dbo.mzys_cfjbxx_fy表$ union all
    select *, 't7' as  'tname' from   郑大二附院门诊部.dbo.mzys_cfjbxx_zf表$ union all
    select *, 't8' as  'tname' from   郑大二附院门诊部.dbo.sflsz_mx表$ union all

    select *, 't8' as  'tname' from   郑大二附院药事部.dbo.ckd表$ union all
    select *, 't8' as  'tname' from   郑大二附院药事部.dbo.rkd表$ union all
    select *, 't8' as  'tname' from   郑大二附院药事部.dbo.yf_cfjbxx_fy表$ union all
    select *, 't8' as  'tname' from   郑大二附院药事部.dbo.yf_rkd表$ union all
    select *, 't8' as  'tname' from   郑大二附院药事部.dbo.ypcc表$
)A
group by a.年份

23.双层游标定义创建sql语句：

DECLARE @tableName varchar(8000)
DECLARE createCursor CURSOR
         FOR
            select table_name from INFORMATION_SCHEMA.TABLES
         OPEN createCursor
         FETCH NEXT FROM createCursor INTO @tableName;
         WHILE @@FETCH_STATUS = 0

             BEGIN
                    DECLARE @str VARCHAR(8000);
                    DECLARE @s Nvarchar(1000)
                    set @s = 'SELECT 字段英文名,数据类型,是否主键 FROM '+@tableName ;
                    --EXEC(@s)

                    set @str =
                    'DECLARE @cloumn varchar(8000);'+
                    'DECLARE @type varchar(8000);'+
                    'DECLARE @is varchar(8000);'+
                    'DECLARE @allColumn varchar(8000);'+
                    'DECLARE @tempColumn varchar(8000);'+
                    'DECLARE @tempCore VARCHAR(8000);'+
                    'SET @tempCore = '''';'+
                    'SET @tempColumn ='''';'+
                    'SET @allColumn = ''create table '''''+@tableName+'''''('';'+
                    'DECLARE classCursor CURSOR '+
                        'FOR '+
                            '('+@s+')' +
                        'OPEN classCursor '+
                         'FETCH NEXT FROM classCursor INTO @cloumn,@type,@is;'+
                        'WHILE @@FETCH_STATUS = 0 '+
                         'BEGIN '+
                           'IF(@is=''是'')'+
                                'begin '+
                                     'set @tempCore =''primary key auto_increment '';'+
                                'END '+
                            'ELSE '+
                                'BEGIN '+
                                    'set @tempCore ='' '';'+
                                'end '+
                            'SET  @tempColumn = @tempColumn+@cloumn+'' ''+@type+'' ''+@tempCore+'','''+
                            'FETCH NEXT FROM classCursor INTO @cloumn,@type,@is;'+
                        'END '+
                'CLOSE classCursor;'+
                'DEALLOCATE classCursor ;'+
                'SELECT replace(replace(@allColumn+LEFT(@tempColumn,LEN(@tempColumn)-1)+'')'',''$'',''''),'''''''','''');'

        exec(@str)
        FETCH NEXT FROM createCursor INTO @tableName;
        END

        CLOSE createCursor;
        DEALLOCATE createCursor ;

24.sqlserver定时作业

use master
GO

DECLARE @jobid UNIQUEIDENTIFIER     --作业id
DECLARE @jobname sysname            --作业名称
DECLARE @dataBaseNmae VARCHAR(600)  --数据库名称
DECLARE @savePath VARCHAR(600)      --保存目录

DECLARE @freq_type_config INT       --执行的频率周
DECLARE @freq_recurrence_factor_config INT   --执行间隔两周
DECLARE @freq_interval_config INT          --每天执行
DECLARE @freq_subday_type_config INT       --，重复方式,0x1=在指定的时间,0x4=多少分钟,--重复方式,0x1=在指定的时间,0x4=多少分钟,0x8=多少小时执行一次。x1和@active_start_time一起使用，@active_start_time指定开始执行的时间，代表在@freq_type指定的频率间隔内只执行一次--若是x4或x8，只要指定@freq_subday_interval，@freq_subday_interval代表每多少分钟（当@freq_subday_type=0x4）或小时（当@freq_subday_type=0x8）执行的次数
DECLARE @freq_subday_interval_config INT    --重复周期数,这里每小时执行一次
DECLARE @active_start_date_config INT   --作业执行的开始日期,为NULL时表示当前日期,格式为YYYYMMDD
DECLARE @active_end_date_config INT --作业执行的停止日期,默认为,格式为YYYYMMDD
DECLARE @active_start_time_config INT  --作业执行的开始时间,格式为HHMMSS
DECLARE @active_end_time_config INT    --作业执行的停止时间,格式为HHMMSS

------------------------------------------------------------------
--参数在此配置
------------------------------------------------------------------
SET @jobname = N'testk20:17'     --作业名称,格式：N'作业名称'
SET @dataBaseNmae = 'test'  --数据库名称
SET @savePath = 'E:/test/'  --保存目录

set @freq_type_config = 4                --（执行的频率）1:一次，4：每天，8：每周，16：每月，32：每月，相对于frequency_interval,64:在sqlserver 代理服务器启动时运行，128：在计算机空闲时运行
set @freq_interval_config =1         --（执行的次数）1：一次，4：每天，8：每周
set @freq_subday_type_config =1        --0x1=在指定的时间,0x4=多少分钟,--重复方式,0x1=在指定的时间,0x4=多少分钟,0x8=多少小时执行一次。x1和@active_start_time一起使用，@active_start_time指定开始执行的时间，代表在@freq_type指定的频率间隔内只执行一次                           --若是x4或x8，只要指定@freq_subday_interval，@freq_subday_interval代表每多少分钟（当@freq_subday_type=0x4）或小时（当@freq_subday_type=0x8）执行的次数
set @freq_recurrence_factor_config = 0  --作业的两次计划执行之间的间隔周或月，仅当frequency_type 设置为、或时，采使用，数据类型为int 默认值为
SET @freq_subday_interval_config =0     --执行作业的间隔，默认值为
set @active_start_date_config = 20180410   --作业执行的开始日期,为NULL时表示当前日期,格式为YYYYMMDD
set @active_end_date_config = 99991231 --作业执行的停止日期,默认为,格式为YYYYMMDD
set @active_start_time_config = 60000  --作业执行的开始时间,格式为HHMMSS
set @active_end_time_config = 235959    --作业执行的停止时间,格式为HHMMSS

------------------------------------------------------------------
--以下均无需改动
------------------------------------------------------------------

--定义创建作业

IF EXISTS(SELECT * FROM msdb.dbo.sysjobs WHERE name=@jobname)
EXEC msdb.dbo.sp_delete_job @job_name=@jobname

EXEC msdb.dbo.sp_add_job
@job_name = @jobname,
@job_id = @jobid OUTPUT

--定义作业步骤
DECLARE @sql nvarchar(4000),@dbname sysname
SELECT @dbname=DB_NAME(),  --作业步骤在当前数据库中执行
@sql=N' DECLARE @date VARCHAR(66)=REPLACE(CONVERT(VARCHAR,GETDATE(),23),''-'','''')
DECLARE @tempstr VARCHAR(666)='''+@savePath+@dataBaseNmae+'_''+@date+''.bak''

DECLARE @FILEPATHNAME NVARCHAR(100)
DECLARE @result int
SET @FILEPATHNAME= @tempstr
CREATE TABLE #T2(a INT,b INT,c INT);
INSERT INTO #T2 EXEC masteR..XP_FILEEXIST @FILEPATHNAME
select @result =a from #T2
drop table #T2
if(@result=1)
begin
EXECUTE master.dbo.xp_delete_file 0,'+N'@tempstr
end

DECLARE @str VARCHAR(666)=''BACKUP DATABASE '+@dataBaseNmae+' TO DISK='''''+@savePath+@dataBaseNmae+'_''+@date+''.bak''''''
exec(@str)'  --一般定义的是使用TSQL处理的作业,这里定义要执行的Transact-SQL语句
EXEC msdb.dbo.sp_add_jobstep
@job_id = @jobid,
@step_name = N'步骤一',
@subsystem = 'TSQL', --步骤的类型,一般为TSQL
@database_name=@dbname,
@command = @sql

--创建调度
EXEC msdb..sp_add_jobschedule
@job_id = @jobid,
@name = N'第一个调度',
@freq_type=@freq_type_config,
@freq_interval=@freq_interval_config,
@freq_subday_type=@freq_subday_type_config,
@freq_subday_interval=@freq_subday_interval_config,
@active_start_date = @active_start_date_config,
@active_end_date = @active_end_date_config,
@active_start_time = @active_start_time_config,
@active_end_time = @active_end_time_config,
@freq_recurrence_factor = @freq_recurrence_factor_config  

EXEC msdb.dbo.sp_add_jobserver
@job_id = @jobid,
@server_name = N'(local)' 

25.查询某个数据库中所有表总行数：

  select SUM(rows) allrows from
  (
  select  a.name,b.rows
  from sysobjects as a inner join sysindexes as b on a.id=b.id
  where (a.type = 'u') and (b.indid in (0,1))
 ) as zz

26.sql行转列：

27.sql列转行：

28.拼接还原数据库sql游标：

    DECLARE @name varchar(1000)
    DECLARE @str varchar(1000)
    DECLARE @dwdm varchar(1000)

    set @name = '410000_yw_'
    DECLARE My_Cursor CURSOR
    FOR
        select dwdm
            from lwsjt.dbo.gx

    OPEN My_Cursor;
    FETCH NEXT FROM My_Cursor INTO @dwdm
    WHILE @@FETCH_STATUS = 0
        BEGIN
            set @str = 'restore database ['+@name+@dwdm+'] from disk = ''D:\Users\bz.bak'' with replace,file=1,move ''410000_yw_115201'' to ''D:\DataBase\SqlServer\SqlServerDataBase\'+@name+@dwdm+'.mdf'','
            +'move ''410000_yw_115201_log'' to ''D:\DataBase\SqlServer\SqlServerLog\'+@name+@dwdm+'_log.ldf'''

        select @str
            FETCH NEXT FROM My_Cursor INTO @dwdm

        END
    CLOSE My_Cursor;
    DEALLOCATE My_Cursor;
    

29.还原数据库语句：

RESTORE DATABASE [henandaxuehuaiheyiyuan506309cwyongyou_20180613100006_5054511020852556869]
FROM DISK='F:/lwsj_file/\merge_success/\orig_name[CWYongYou_20180613],industry[医疗机构],unit[506309],sys_time[1528855218794].bak'
WITH REPLACE,
FILE=1,
MOVE 'CW' TO 'F:\Databases\Sqlserver\SqlserverData\henandaxuehuaiheyiyuan506309cwyongyou_20180613100006_5054511020852556869.mdf',
MOVE 'CW_log' TO 'F:\Databases\Sqlserver\SqlserverData\henandaxuehuaiheyiyuan506309cwyongyou_20180613100006_5054511020852556869_log.ldf'; 

30.公用表达式递归：

WITH COL_CTE(Id,Name,ParentId,tLevel )
AS
(
    --基本语句
    SELECT Id,Name,ParentId,0 AS tLevel FROM Col
    WHERE ParentId = 0
    UNION ALL
    --递归语句
    SELECT c.Id,c.Name,c.ParentId,ce.tLevel+1 AS tLevel FROM COL as c
    INNER JOIN COL_CTE AS ce
    ON c.ParentId = ce.Id
)
SELECT * FROM COL_CTE

31.merge合并：

create table test1
(id int,name varchar(20),dess varchar(20))
go
create table test2
(id int,name varchar(20),dess varchar(20))
go
insert into test1(id,name,dess)
values(1,'boyi55','qqq'),(2,'56cto','qwe'),(3,'bbs','asd'),(4,'fengjicai','zxc'),(5,'alis','zxc')
insert into test2(id,name,dess)
values(1,'boyi','aaa'),(2,'test','qwe'),(3,'test','test')

---------------------------

merge test2 t --要更新的目标表
using test1 s --源表
on t.id=s.id and t.name = s.name     --更新条件（即主键）
when matched    --如果匹配，更新
then update set t.name=s.name
when not matched
then insert values(id,name,dess);  --如果两个条件都不匹配，插入。此语句必须以分号结束