Home Database Mysql Tutorial 数据库全文搜索批量替换字符串

数据库全文搜索批量替换字符串

Jun 07, 2016 pm 03:36 PM
string implement batch search database replace

--如果是第一次执行则先创建存储过程 --如果不是第一次执行则直接修改 就可以。或者直接调用 create proc Full_Search(@string nvarchar(500),@string2 nvarchar(500)) --alter proc dbo.Full_Search(@string nvarchar(500),@string2 nvarchar(500)) as begi

--如果是第一次执行则先创建存储过程
--如果不是第一次执行则直接修改 就可以。或者直接调用

create proc Full_Search(@string nvarchar(500),@string2 nvarchar(500))
--alter proc dbo.Full_Search(@string nvarchar(500),@string2 nvarchar(500))
as
 begin

 declare @tbname varchar(500)
 declare tbroy cursor for select name from sysobjects
 where xtype= 'u ' --第一个游标遍历所有的表
 
 open tbroy
 fetch next from tbroy into @tbname
 while @@fetch_status=0
  begin
  
  declare @colname varchar(50)
  declare colroy cursor for select name from syscolumns
  where id=object_id(@tbname) and xtype in (
  select xtype from systypes
  where name in ( 'varchar ', 'nvarchar ', 'char ', 'nchar ') --数据类型为字符型的字段
                --where name in ('nvarchar ' ) --数据类型为字符型的字段
  ) --第二个游标是第一个游标的嵌套游标,遍历某个表的所有字段
  
  open colroy
  fetch next from colroy into @colname
  while @@fetch_status=0
   begin

   declare @sql nvarchar(1000),@j int
                      

   exec( 'UPDATE ' +@tbname + ' SET '+@colname+' = replace('+@colname+','+ ''''+@string+ ''', '+ ''''+@string2+ ''');')
                 
                        --print( 'UPDATE ' +@tbname + ' SET '+@colname+' = replace('+@colname+','+ ''''+@string+ ''', '+ ''''+@string2+ ''');')
                       -- exec( 'select distinct '+@colname+' from ' +@tbname + ' where '+ @colname+ ' like '+ '''%'+@string+ '%''')
   fetch next from colroy into @colname
   end

  close colroy
  deallocate colroy
  
  fetch next from tbroy into @tbname
  end
 close tbroy
 deallocate tbroy

 end
go
--exec Full_Search 'mm',''  整库替换函数  第一个参数是 被替换的数据 ,第二个参数是替换后的数据
go

 

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