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  • 快速将一个表的数据生成SQL插入语句

    将一个表中的数据生成SQL插入语句,方便系统快速初始化,在数据库中执行创建以下过程就可以了。

    if    exists (select * from sysobjects where id=object_id('GenerateData') and  OBJECTPROPERTY(id, 'IsProcedure') =1 )
        Drop Procedure GenerateData
    go
    CREATE PROCEDURE GenerateData 
    @tablename sysname 
    AS 
    begin
        declare @column varchar(2000) 
        declare @columndata varchar(2000) 
        declare @sql varchar(8000) 
        declare @xtype tinyint 
        declare @name sysname 
        declare @objectId int 
        declare @objectname sysname 
        declare @ident int 
    
        set nocount on 
        set @objectId=object_id(@tablename) 
    
        if @objectId is null -- 判断对象是否存在 
        begin 
            print 'The object not exists' 
            return 
        end 
        set @objectname=rtrim(object_name(@objectId)) 
    
        if @objectname is null or charindex(@objectname,@tablename)=0 --此判断不严密 
        begin 
            print 'object not in current database' 
            return 
        end 
    
        if OBJECTPROPERTY(@objectId,'IsTable') < > 1 -- 判断对象是否是table 
        begin 
            print 'The object is not table' 
            return 
        end 
    
        select @ident=status&0x80 from syscolumns where id=@objectid and status&0x80=0x80 
    
        if @ident is not null 
        print 'SET IDENTITY_INSERT '+@TableName+' ON' 
    
        declare syscolumns_cursor cursor
        for select c.name,c.xtype from syscolumns c 
        where c.id=@objectid order by c.colid 
    
        open syscolumns_cursor 
        set @column='' 
        set @columndata='' 
        fetch next from syscolumns_cursor into @name,@xtype 
    
        while @@fetch_status < >-1 
        begin 
            if @@fetch_status < >-2 
            begin 
                if @xtype not in(189,34,35,99,98) --timestamp不需处理,image,text,ntext,sql_variant 暂时不处理 
    
                begin 
                    set @column=@column+case when len(@column)=0 then'' else ','end+@name 
    
                    set @columndata=@columndata+case when len(@columndata)=0 then '' else ','','','end 
                    +case when @xtype in(167,175) then '''''''''+'+@name+'+''''''''' --varchar,char 
                    when @xtype in(231,239) then '''N''''''+'+@name+'+''''''''' --nvarchar,nchar 
                    when @xtype=61 then '''''''''+convert(char(23),'+@name+',121)+''''''''' --datetime 
                    when @xtype=58 then '''''''''+convert(char(16),'+@name+',120)+''''''''' --smalldatetime 
                    when @xtype=36 then '''''''''+convert(char(36),'+@name+')+''''''''' --uniqueidentifier 
                    else @name end 
    
                end 
    
            end 
    
            fetch next from syscolumns_cursor into @name,@xtype 
    
        end 
    
        close syscolumns_cursor 
        deallocate syscolumns_cursor 
    
        set @sql='set nocount on select ''insert into '+@tablename+'('+@column+') values(''as ''--'','+@columndata+','')'' from '+@tablename 
    
        print '--'+@sql 
        exec(@sql) 
    
        if @ident is not null 
        print 'SET IDENTITY_INSERT '+@TableName+' OFF' 
    end
    GO

    实例,要将表t_sys_menu中的生成插入语句,就如下执行操作即可:

    exec GenerateData 't_sys_menu'
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  • 原文地址:https://www.cnblogs.com/PeterFu/p/6042113.html
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