通过存储过程，查询表的相关表字段信息（sqlserver,mysql,oracle）

三种数据库对应查询相关表字段信息

1.sqlserver

/*

Creater：Kern

Date：2007-08-03

Function：构建查询语句列字段

Modify：1.增加排序处理,使输出结果与表单列结构一致;2.增加换行处理每8个字段换行一次(2007-08-08 by kern)

Remark：辅助开发存储过程

*/

CREATE procedure dbo.CCS

@Prefix varchar(10)='', --前缀

@TableName varchar(100), --表名

@Select int=0 --是否生成Select语句，参数1为生成，0为不生成

AS

declare

@ColumName varchar(50),

@ExecStr varchar(2000),

@CreateStr varchar(2000),

@NewLine int

Set @CreateStr=''

--Set @ExecStr='select name into ##Tmp from syscolumns where OBJECTPROPERTY(id, N''IsUserTable'') = 1 and id = object_id(N''[dbo].[' + @TableName + ']'')'

Set @ExecStr='select name into ##Tmp from syscolumns where id = object_id(N''[dbo].[' + @TableName + ']'') order by colid'

execute(@ExecStr)

set @NewLine=1

declare ColumsStrs cursor for

select name from ##Tmp

open ColumsStrs

fetch next from ColumsStrs into @ColumName

while @@fetch_status=0

begin

if @Prefix<>'' set @ColumName=@Prefix+'.'+@ColumName

Set @CreateStr=@CreateStr + @ColumName + ','

if @NewLine=8

begin

set @CreateStr=@CreateStr + convert(varchar,0x0A)

set @NewLine=0

end

set @NewLine = @NewLine + 1

fetch next from ColumsStrs into @ColumName

end

close ColumsStrs

deallocate ColumsStrs

if @Select=1

begin

if @Prefix<>''

begin

Set @CreateStr='select ' + substring(@CreateStr, 1, len(@CreateStr)-1) + convert(varchar,0x0A) + 'from ' + @TableName + ' ' + @Prefix

end

else

begin

Set @CreateStr='select ' + substring(@CreateStr, 1, len(@CreateStr)-1) + convert(varchar,0x0A) + 'from ' + @TableName

end

end

print @CreateStr

drop table ##Tmp

GO

2.mysql

DELIMITER $$;

DROP PROCEDURE IF EXISTS `car_libary`.`css`$$

CREATE DEFINER=`fjfdszj`@`localhost` PROCEDURE `css`(Prefix varchar(10) ,TableName varchar(100),Flagselect int)

begin

declare ColumName varchar(50);

declare ExecStr varchar(2000);

declare CreateStr varchar(2000);

declare NewLine int;

DECLARE done INT DEFAULT 0;

declare ColumsStrs cursor for select column_name from Tmp;

DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = 1;

CREATE temporary TABLE Tmp(column_name varchar(50));

Set CreateStr='';

/*Set ExecStr= concat('select column_name into Tmp from columns where table_name = ', TableName, ' order by ordinal_position' ); */

PREPARE stmt FROM 'insert into Tmp select column_name from information_schema.columns where table_name =? order by ordinal_position' ;

set @ExecStr=TableName;

execute stmt using @ExecStr;

set NewLine=1;

open ColumsStrs;

REPEAT

fetch ColumsStrs into ColumName;

IF NOT done THEN

if Prefix<>'' then

set ColumName=concat(Prefix,'.',ColumName);

end if;

Set CreateStr=concat(CreateStr , ColumName , ',');

if NewLine=8 then

set CreateStr=concat(CreateStr , CONVERT(0x0A , CHAR));

set NewLine=0;

end if;

set NewLine = NewLine + 1;

END IF;

UNTIL done

END REPEAT;

close ColumsStrs;

/*deallocate ColumsStrs;*/

if FlagSelect=1 then

if Prefix<>'' then

Set CreateStr=concat('select ' ,substring(CreateStr, 1, length(CreateStr)-1) , CONVERT(0x0A , CHAR) , 'from ' ,TableName , ' ', Prefix);

else

Set CreateStr=concat('select ' , substring(CreateStr, 1, length(CreateStr)-1) , CONVERT(0x0A , CHAR) , 'from ' , TableName);

end if;

end if;

select CreateStr;

drop temporary table Tmp;

end$$

DELIMITER ;$$

3.oracle的

create or replace

PROCEDURE css (prefix VARCHAR2,tablename VARCHAR2,flagselect int)

--创建存储过程查询对应表的相关字段信息

--Author:fjfdszj

--Date:2009-08-05

--参数说明:prefix表的别名，tablename数据库的表名，flagselect是否显示select

--例如 begin

-- hunt.css('a','T_SYSTEM_MESSAGE',1);

-- end;

IS

v_columname varchar2(50):=''; --字段名

v_returnstr varchar2(2000):=''; --组成的返回字符串

v_newline int:=1; --换行处理

cursor colum_cur(v_tablename varchar2) is --申明一个游标处理得到对应表的字段信息

select column_name from user_tab_columns where table_name=v_tablename;

BEGIN

open colum_cur(tablename);--打开游标

loop

fetch colum_cur into v_columname;--取得每一个字段的名称

exit when colum_cur%notfound; --当结束时退出

if prefix<>' ' then

v_columname:=prefix||'.'||v_columname;--修改字段是否加前缀

end if;

v_returnstr:=v_returnstr||v_columname||',';

--换行处理

if v_newline=8 then

v_returnstr:=v_returnstr||chr(10);

v_newline:=1;

end if;

v_newline:=1+v_newline;

end loop;

close colum_cur;

--处理前缀是否有select等其他一些信息

if flagselect=1 then

v_returnstr:=substr(v_returnstr,1,length(v_returnstr)-1);

if prefix<>' ' then

v_returnstr:='select '||v_returnstr||chr(10)||' '||tablename||' '||prefix ;

else

v_returnstr:='select '||v_returnstr||chr(10)||' '||tablename ;

end if;

end if;

--转化为小写字母输出

v_returnstr:=lower(v_returnstr);

--输出提示结果

dbms_output.put_line(v_returnstr);

END;

附注：本人在前辈基础上，即sqlserver版的代码，迁移到mysql和oracle中应用该方法。

引导区文件

/etc/grub.conf

title Asianux Server 3 (2.6.18-8.10AX)（仅支持内存小于4G）

root (hd0,0)

kernel /vmlinuz-2.6.18-8.10AX ro root=/dev/VolGroup00/LogVol00

initrd /initrd-2.6.18-8.10AX.img

title Asianux Server 3-PAE (2.6.18-8.10AXPAE)(支持内存大于4G)

root (hd0,0)

kernel /vmlinuz-2.6.18-8.10AXPAE ro root=/dev/VolGroup00/LogVol00

initrd /initrd-2.6.18-8.10AXPAE.img

title Asianux Server 3-xen (2.6.18-8.10AXxen)（虚拟机）

root (hd0,0)

kernel /xen.gz-2.6.18-8.10AX

module /vmlinuz-2.6.18-8.10AXxen ro root=/dev/VolGroup00/LogVol00

module /initrd-2.6.18-8.10AXxen.img