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  • sql server游标

    --声明游标
    declare my_cursor cursor for select * from info
    --删除游标资源
    deallocate my_cursor
    --打开游标,在游标关闭或删除前都有效
    open my_cursor
    --关闭游标
    close my_cursor
    --声明局部变量
    declare @id int,@name varchar(20),@address varchar(20)
    --定位到指定位置的记录
    fetch absolute 56488 from my_cursor into @id,@name,@address
    select @id as id,@name as name,@address as address
    --定位到当前记录相对位置记录
    fetch relative -88 from my_cursor into @id,@name,@address
    select @id as id,@name as name,@address as address
    --定位到当前记录前一条
    fetch prior from my_cursor into @id,@name,@address
    select @id as id,@name as name,@address as address
    --定位到当前记录后一条
    fetch next from my_cursor into @id,@name,@address
    select @id as id,@name as name,@address as address
    --定位到首记录
    fetch first from my_cursor into @id,@name,@address
    select @id as id,@name as name,@address as address
    --定位到尾记录
    fetch last from my_cursor into @id,@name,@address
    select @id as id,@name as name,@address as address
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    前言
  • 原文地址:https://www.cnblogs.com/hnxxcxg/p/2940854.html
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