• 系统表相关SQL语句


    -- ======================================================
    --列出SQL SERVER 所有表,字段名,主键,类型,长度,小数位数等信息
    --在查询分析器里运行即可,可以生成一个表,导出到EXCEL
    -- ======================================================
    SELECT
           (case when a.colorder=1 then d.name else '' end)表名,
           a.colorder 字段序号,
           a.name 字段名,
           (case when COLUMNPROPERTY( a.id,a.name,'IsIdentity')=1 then '√'else '' end) 标识,
           (case when (SELECT count(*)
           FROM sysobjects
           WHERE (name in
                     (SELECT name
                    FROM sysindexes
                    WHERE (id = a.id) AND (indid in
                              (SELECT indid
                             FROM sysindexkeys
                             WHERE (id = a.id) AND (colid in
                                       (SELECT colid
                                      FROM syscolumns
                                      WHERE (id = a.id) AND (name = a.name))))))) AND
                  (xtype = 'PK'))>0 then '√' else '' end) 主键,
           b.name 类型,
           a.length 占用字节数,
           COLUMNPROPERTY(a.id,a.name,'PRECISION') as 长度,
           isnull(COLUMNPROPERTY(a.id,a.name,'Scale'),0) as 小数位数,
           (case when a.isnullable=1 then '√'else '' end) 允许空,
           isnull(e.text,'') 默认值,
           isnull(g.[value],'') AS 字段说明   
     
    FROM syscolumns a left join systypes b
    on a.xtype=b.xusertype
    inner join sysobjects d
    on a.id=d.id and d.xtype='U' and d.name<>'dtproperties'
    left join syscomments e
    on a.cdefault=e.id
    left join sysproperties g
    on a.id=g.id AND a.colid = g.smallid 
    order by a.id,a.colorder
    -------------------------------------------------------------------------------------------------
     
     
     
     
     
     
    列出SQL SERVER 所有表、字段定义,类型,长度,一个值等信息
    并导出到Excel 
    -- ======================================================
    -- Export all user tables definition and one sample value
    -- jan-13-2003,Dr.Zhang
    -- ======================================================
    在查询分析器里运行:
    SET ANSI_NULLS OFF
    GO
    SET NOCOUNT ON
    GO
     
    SET LANGUAGE 'Simplified Chinese'
    go
    DECLARE @tbl nvarchar(200),@fld nvarchar(200),@sql nvarchar(4000),@maxlen int,@sample nvarchar(40)
     
    SELECT d.name TableName,a.name FieldName,b.name TypeName,a.length Length,a.isnullable IS_NULL INTO #t
    FROM syscolumns a, systypes b,sysobjects d 
    WHERE a.xtype=b.xusertype and a.id=d.id and d.xtype='U'
     
    DECLARE read_cursor CURSOR
    FOR SELECT TableName,FieldName FROM #t
     
    SELECT TOP 1 '_TableName                     ' TableName,
                'FieldName                      ' FieldName,'TypeName             ' TypeName,
                'Length' Length,'IS_NULL' IS_NULL,
                'MaxLenUsed' AS MaxLenUsed,'Sample Value          ' Sample,
                 'Comment   ' Comment INTO #tc FROM #t
     
    OPEN read_cursor
     
    FETCH NEXT FROM read_cursor INTO @tbl,@fld
    WHILE (@@fetch_status <> -1) --- failes
    BEGIN
           IF (@@fetch_status <> -2) -- Missing
           BEGIN
                  SET @sql=N'SET @maxlen=(SELECT max(len(cast('+@fld+' as nvarchar))) FROM '+@tbl+')'
                  --PRINT @sql
                  EXEC SP_EXECUTESQL @sql,N'@maxlen int OUTPUT',@maxlen OUTPUT
                  --print @maxlen
                  SET @sql=N'SET @sample=(SELECT TOP 1 cast('+@fld+' as nvarchar) FROM '+@tbl+' WHERE len(cast('+@fld+' as nvarchar))='+convert(nvarchar(5),@maxlen)+')'
                  EXEC SP_EXECUTESQL @sql,N'@sample varchar(30) OUTPUT',@sample OUTPUT
                  --for quickly  
                  --SET @sql=N'SET @sample=convert(varchar(20),(SELECT TOP 1 '+@fld+' FROM '+
                         --@tbl+' order by 1 desc ))' 
                  PRINT @sql
                  print @sample
                  print @tbl
                  EXEC SP_EXECUTESQL @sql,N'@sample nvarchar(30) OUTPUT',@sample OUTPUT
                  INSERT INTO #tc SELECT *,ltrim(ISNULL(@maxlen,0)) as MaxLenUsed,
                         convert(nchar(20),ltrim(ISNULL(@sample,' '))) as Sample,' ' Comment FROM #t where TableName=@tbl and FieldName=@fld
           END
           FETCH NEXT FROM read_cursor INTO @tbl,@fld
    END
     
    CLOSE read_cursor
    DEALLOCATE read_cursor
    GO
     
    SET ANSI_NULLS ON
    GO
    SET NOCOUNT OFF
    GO
    select count(*) from #t
    DROP TABLE #t
    GO
     
    select count(*)-1 from #tc
     
    select * into ##tx from #tc order by tablename
    DROP TABLE #tc
     
    --select * from ##tx
     
    declare @db nvarchar(60),@sql nvarchar(3000)
    set @db=db_name()
    --请修改用户名和口令 导出到Excel 
    set @sql='exec master.dbo.xp_cmdshell ''bcp ..dbo.##tx out c:\'+@db+'_exp.xls -w -C936 -Usa -Psa '''
    print @sql
    exec(@sql)
    GO
    DROP TABLE ##tx
    GO
     
     
     
    -- ======================================================
    --根据表中数据生成insert语句的存储过程
    --建立存储过程,执行spGenInsertSQL 表名
    --感谢playyuer
    -- ======================================================
    CREATE   proc spGenInsertSQL (@tablename varchar(256))
     
    as
    begin
     declare @sql varchar(8000)
     declare @sqlValues varchar(8000)
     set @sql =' ('
     set @sqlValues = 'values (''+'
     select @sqlValues = @sqlValues + cols + ' + '','' + ' ,@sql = @sql + '[' + name + '],'
        from
            (select case
                      when xtype in (48,52,56,59,60,62,104,106,108,122,127)                               
                           then 'case when '+ name +' is null then ''NULL'' else ' + 'cast('+ name + ' as varchar)'+' end'
                      when xtype in (58,61)
                           then 'case when '+ name +' is null then ''NULL'' else '+''''''''' + ' + 'cast('+ name +' as varchar)'+ '+'''''''''+' end'
                     when xtype in (167)
                           then 'case when '+ name +' is null then ''NULL'' else '+''''''''' + ' + 'replace('+ name+','''''''','''''''''''')' + '+'''''''''+' end'
                      when xtype in (231)
                           then 'case when '+ name +' is null then ''NULL'' else '+'''N'''''' + ' + 'replace('+ name+','''''''','''''''''''')' + '+'''''''''+' end'
                      when xtype in (175)
                           then 'case when '+ name +' is null then ''NULL'' else '+''''''''' + ' + 'cast(replace('+ name+','''''''','''''''''''') as Char(' + cast(length as varchar) + '))+'''''''''+' end'
                      when xtype in (239)
                           then 'case when '+ name +' is null then ''NULL'' else '+'''N'''''' + ' + 'cast(replace('+ name+','''''''','''''''''''') as Char(' + cast(length as varchar) + '))+'''''''''+' end'
                      else '''NULL'''
                    end as Cols,name
               from syscolumns 
              where id = object_id(@tablename)
            ) T
     set @sql ='select ''INSERT INTO ['+ @tablename + ']' + left(@sql,len(@sql)-1)+') ' + left(@sqlValues,len(@sqlValues)-4) + ')'' from '+@tablename
     --print @sql
     exec (@sql)
    end
     
    GO
     
     
     
    -- ======================================================
    --根据表中数据生成insert语句的存储过程
    --建立存储过程,执行proc_insert 表名
    --感谢Sky_blue
    -- ======================================================
     
    CREATE proc proc_insert (@tablename varchar(256))
    as
    begin
           set nocount on
           declare @sqlstr varchar(4000)
           declare @sqlstr1 varchar(4000)
           declare @sqlstr2 varchar(4000)
           select @sqlstr='select ''insert '+@tablename
           select @sqlstr1=''
           select @sqlstr2=' ('
           select @sqlstr1= ' values ( ''+'
           select @sqlstr1=@sqlstr1+col+'+'',''+' ,@sqlstr2=@sqlstr2+name +',' from (select case
    --     when a.xtype =173 then 'case when '+a.name+' is null then ''NULL'' else '+'convert(varchar('+convert(varchar(4),a.length*2+2)+'),'+a.name +')'+' end'
           when a.xtype =104 then 'case when '+a.name+' is null then ''NULL'' else '+'convert(varchar(1),'+a.name +')'+' end'
           when a.xtype =175 then 'case when '+a.name+' is null then ''NULL'' else '+'''''''''+'+'replace('+a.name+','''''''','''''''''''')' + '+'''''''''+' end'
           when a.xtype =61 then 'case when '+a.name+' is null then ''NULL'' else '+'''''''''+'+'convert(varchar(23),'+a.name +',121)'+ '+'''''''''+' end'
           when a.xtype =106 then 'case when '+a.name+' is null then ''NULL'' else '+'convert(varchar('+convert(varchar(4),a.xprec+2)+'),'+a.name +')'+' end'
           when a.xtype =62 then 'case when '+a.name+' is null then ''NULL'' else '+'convert(varchar(23),'+a.name +',2)'+' end'
           when a.xtype =56 then 'case when '+a.name+' is null then ''NULL'' else '+'convert(varchar(11),'+a.name +')'+' end'
           when a.xtype =60 then 'case when '+a.name+' is null then ''NULL'' else '+'convert(varchar(22),'+a.name +')'+' end'
           when a.xtype =239 then 'case when '+a.name+' is null then ''NULL'' else '+'''''''''+'+'replace('+a.name+','''''''','''''''''''')' + '+'''''''''+' end'
           when a.xtype =108 then 'case when '+a.name+' is null then ''NULL'' else '+'convert(varchar('+convert(varchar(4),a.xprec+2)+'),'+a.name +')'+' end'
           when a.xtype =231 then 'case when '+a.name+' is null then ''NULL'' else '+'''''''''+'+'replace('+a.name+','''''''','''''''''''')' + '+'''''''''+' end'
           when a.xtype =59 then 'case when '+a.name+' is null then ''NULL'' else '+'convert(varchar(23),'+a.name +',2)'+' end'
           when a.xtype =58 then 'case when '+a.name+' is null then ''NULL'' else '+'''''''''+'+'convert(varchar(23),'+a.name +',121)'+ '+'''''''''+' end'
           when a.xtype =52 then 'case when '+a.name+' is null then ''NULL'' else '+'convert(varchar(12),'+a.name +')'+' end'
           when a.xtype =122 then 'case when '+a.name+' is null then ''NULL'' else '+'convert(varchar(22),'+a.name +')'+' end'
           when a.xtype =48 then 'case when '+a.name+' is null then ''NULL'' else '+'convert(varchar(6),'+a.name +')'+' end'
    --     when a.xtype =165 then 'case when '+a.name+' is null then ''NULL'' else '+'convert(varchar('+convert(varchar(4),a.length*2+2)+'),'+a.name +')'+' end'
           when a.xtype =167 then 'case when '+a.name+' is null then ''NULL'' else '+'''''''''+'+'replace('+a.name+','''''''','''''''''''')' + '+'''''''''+' end'
           else '''NULL'''
           end as col,a.colid,a.name
           from syscolumns a where a.id = object_id(@tablename) and a.xtype <>189 and a.xtype <>34 and a.xtype <>35 and a.xtype <>36
           )t order by colid
          
           select @sqlstr=@sqlstr+left(@sqlstr2,len(@sqlstr2)-1)+') '+left(@sqlstr1,len(@sqlstr1)-3)+')'' from '+@tablename
    -- print @sqlstr
           exec( @sqlstr)
           set nocount off
    end
    GO
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  • 原文地址:https://www.cnblogs.com/zhangchenliang/p/1643674.html
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