利用存储过程将表中的数据生成Insert语句

1、创建存储过程

CREATE PROC [dbo].[sp_get_InsertSql]

    @dbName              VARCHAR ( 32)= '' ,    -- 数据库名称

    @tabList          VARCHAR ( max ), -- 要导出数据的表名，表名之间用逗号隔开，过滤条件跟在表名后面，用空格隔开如 tab1 where col1!=2, tab2, tab3  

    @IncludeIdentity  BIT = 1,         -- 是否包含自增字段

    @DeleteOldData       BIT = 1         -- 插入前删除所有数据

AS

    DECLARE

       @index     INT ,

       @wi        INT ,

       @SQL       VARCHAR ( max ),

       @SQL1      VARCHAR ( max ),

       @tabName   VARCHAR ( 128),

       @colName   VARCHAR ( 128),

       @colType   VARCHAR ( 128),

       @tabPrefix VARCHAR ( 32),

       @cols      VARCHAR ( max ),

       @colsData  VARCHAR ( max ),

       @SQLWhere  VARCHAR ( 1024),       

       @SQLIdentityOn    VARCHAR ( MAX ),

       @SQLIdentityOff VARCHAR ( MAX ),

       @SQLDelete    VARCHAR ( max ),

       @SQLIfBegin       VARCHAR ( 1024),

       @SQLIfEnd     VARCHAR ( 1024),

       @SQLNull      VARCHAR ( 1024);       

    DECLARE @t_tb TABLE ( TB varchar ( 128), Sqlwhere varchar ( 1024), SN BIGINT IDENTITY ( 1, 1))

    DECLARE @tb TABLE ( insert_sql VARCHAR ( max ), SN BIGINT IDENTITY ( 1, 1));

    DECLARE @colList TABLE ( colName VARCHAR ( 128), colType VARCHAR ( 128),

       colValueL VARCHAR ( 120), colValueR VARCHAR ( 120), selColName VARCHAR ( 128));

BEGIN

    SET NOCOUNT ON

    SET @tabList = REPLACE ( @tabList, CHAR ( 9), '' )

    SET @tabList = REPLACE ( @tabList, CHAR ( 10), '' )

    SET @tabList = REPLACE ( @tabList, CHAR ( 13), '' )

    SET @dbName = LTRIM ( RTRIM ( @dbName))

    SET @index = CHARINDEX ( ',' , @tabList)

    IF LEN ( @dbName) > 0

       SET @tabPrefix = @dbName + '..'

    ELSE

       SET @tabPrefix = '' ;

   

    WHILE @index > 0 AND @index IS NOT NULL

    BEGIN

       SET @tabName = SUBSTRING ( @tabList, 1, @index- 1)

        

       SET @wi= CHARINDEX ( ' where' , LTRIM ( @tabName))

 

       IF @wi= 0

           SET @wi = LEN ( @tabName)

             

       INSERT INTO @t_tb( tb, Sqlwhere) VALUES ( SUBSTRING ( @tabName, 1, @wi), SUBSTRING ( @tabName, @wi+ 1, LEN ( @tabName)- @wi))

 

       SET @tabList = SUBSTRING ( @tabList, @index+ 1, LEN ( @tabList)- @index)

       SET @index = CHARINDEX ( ',' , @tabList)

    END

 

    IF @index = 0 OR @index IS NULL

       SET @tabName = @tabList

    ELSE

       SET @tabName = SUBSTRING ( @tabList, 1, @index)

   

   

    SET @wi= CHARINDEX ( ' where' , LTRIM ( @tabName))

   

    IF @wi= 0

       SET @wi = LEN ( @tabName)

   

    INSERT INTO @t_tb( tb, Sqlwhere) VALUES ( SUBSTRING ( @tabName, 1, @wi), SUBSTRING ( @tabName, @wi+ 1, LEN ( @tabName)- @wi))

 

    SELECT @SQL1 = 'select INSERT_SQL='';SET NOCOUNT ON' + CHAR ( 13) + '''' +

                  ' union all '

    SELECT @SQLNull = 'select INSERT_SQL=''  '' union all ' ,     

          @SQLIfBegin = 'select INSERT_SQL=''    If @Error=0 begin ''' +

                  ' union all ' ,

          @SQLIfEnd = ' union all ' + 'select INSERT_SQL=''    end;'''

   

    DECLARE tab_cur CURSOR FOR

    SELECT t. name , tb. Sqlwhere FROM sys.tables t

    INNER JOIN @t_tb tb ON t. name = RTRIM ( LTRIM ( tb. TB))

    ORDER BY tb. SN   

   

    OPEN tab_cur

    FETCH NEXT FROM tab_cur INTO @tabName, @SQLWhere

    WHILE @@FETCH_STATUS = 0 BEGIN

       DELETE FROM @colList

             

      

       IF NOT EXISTS( SELECT 1 FROM sys.objects WHERE name = @tabName AND type = 'U' ) BEGIN

           PRINT ( @tabName + N' 不存在！ ' )

           RAISERROR ( @tabName, 16, - 1);

           FETCH NEXT FROM tab_cur INTO @tabName, @SQLWhere

           CONTINUE ;

       END

      

       INSERT INTO @colList( colName, colType, colValueL, colValueR)

       SELECT c. NAME , t. name , '' , ''

       FROM sys.columns c

       INNER JOIN sys.tables tab

           ON c. object_id = tab. object_id

       INNER JOIN sys.types t

           ON c. user_type_id = t. user_type_id

       WHERE c. is_computed= 0

           AND tab. name = @tabName

 

       IF @IncludeIdentity= 0

           DELETE FROM @colList WHERE colName IN(

              SELECT name FROM sys.columns WHERE object_id = OBJECT_ID ( @tabName) AND is_identity= 1)

             

       UPDATE @colList SET colValueL= 'RTRIM(' , colValueR = ')'

       WHERE colType IN( 'text' , 'varchar' , 'nvarchar' , 'char' , 'uniqueidentifier' , 'datetime' , 'nchar' , 'sysname' )

      

       SELECT @cols= '' , @colsData = '' , @SQL = '' ;

      

       UPDATE @colList SET colName = '[' + colName + ']'    

       UPDATE @colList SET selColName= colName   

      

       UPDATE @colList SET colValueL= 'replace(' + colValueL, colValueR = colValueR+ ','''''''','''''''''''')'

       WHERE colType IN( 'text' , 'varchar' , 'nvarchar' , 'char' , 'nchar' , 'sysname' )  

          

       UPDATE @colList SET colValueL=

           CASE WHEN colType IN( 'text' , 'varchar' , 'nvarchar' , 'char' , 'uniqueidentifier' , 'datetime' , 'nchar' , 'sysname' ) THEN '''''''''+' ELSE '' END

              + colValueL,

           colValueR = colValueR + CASE WHEN colType IN( 'text' , 'varchar' , 'nvarchar' , 'char' , 'nchar' , 'datetime' , 'uniqueidentifier' , 'sysname' ) THEN '+''''''''' ELSE '' END

             

       SELECT @cols = @cols + colName + ', ' ,

           @colsData = @colsData + 'isnull(' +

              colValueL +          

              CASE WHEN colType= 'datetime' THEN 'convert(varchar(20),' + colName+ ',120)'

              WHEN colType= 'uniqueidentifier' THEN 'convert(varchar(50),' + colName+ ')'

              WHEN colType= 'text' THEN 'convert(nvarchar(max),' + colName+ ')'

              WHEN colType= 'sysname' THEN 'convert(nvarchar(max),' + colName+ ')'

              WHEN colType= 'varbinary' OR colType= 'BINARY' OR colType= 'image'

                  THEN 'master.dbo.fn_varbintohexsubstring(1,' + colName+ ',1,0)'              

              ELSE   'cast(' + colName+ ' as nvarchar(max))' END

              + colValueR + ',''null'')+'', ''+'

       FROM @colList

 

       SELECT @cols = LEFT( @cols, LEN ( @cols)- 1),

              @colsData = LEFT( @colsData, LEN ( @colsData)- 5),

              @SQL = 'select INSERT_SQL=''print ''''Table Name:  ' + CHAR ( 9)+ @tabName + '''''''' +

                  ' union all '

      

       SELECT @cols = 'select INSERT_SQL=''INSERT INTO ' + @tabPrefix + @tabName + '(' + @cols+ ')' ,

           @colsData = '  VALUES(''+' + @colsData + '+'');'' FROM ' + @tabPrefix + @tabName

       SELECT @colsData = @colsData + ' ' + ISNULL ( @SQLWhere, '' )

      

       IF @DeleteOldData= 1 

           SET @SQLDelete = 'select INSERT_SQL='''' +

                  ''Delete from ' + @tabPrefix + @tabName + '; ''' +

                  ' union all '

       ELSE

           SET @SQLDelete= ''

      

       IF @IncludeIdentity= 1 AND EXISTS( SELECT 1 FROM sys.columns WHERE object_id = OBJECT_ID ( @tabName) AND is_identity= 1)

       BEGIN

           SELECT @SQLIdentityOn = 'select INSERT_SQL=''SET IDENTITY_INSERT ' + @tabPrefix + @tabName + ' ON;''' +

                  ' union all ' ,

              @SQLIdentityOff = ' union all ' + 'select INSERT_SQL=''SET IDENTITY_INSERT ' + @tabPrefix + @tabName + ' OFF;'''

       END

       ELSE

       BEGIN

           SELECT @SQLIdentityOff = '' ,

              @SQLIdentityOn = '' ;

       END

 

       INSERT INTO @tb( insert_sql)

       EXECUTE ( @SQLNull + @SQLIfBegin + @SQL+ @SQLDelete+ @SQLIdentityOn + @cols+ @colsData + @SQLIdentityOff + @SQLIfEnd)

 

       FETCH NEXT FROM tab_cur INTO @tabName, @SQLWhere

    END

 

    CLOSE tab_cur

    DEALLOCATE tab_cur

      

    SELECT insert_sql FROM @tb ORDER BY sn

END 

2、执行存储过程

EXECUTE  [dv_etc].[dbo].[sp_get_InsertSql] 
   @dbName='dv_etc'  --数据库名称
  ,@tabList='etc_city'   --表名称
  ,@IncludeIdentity=0 
  ,@DeleteOldData=0