我想知道如何在MySQL中定义或声明内部表
我是MySQL的新手,我不知道语法
如您所见,我创建了存储过程
CREATE DEFINER=`root`@`localhost` PROCEDURE `MySP`(
actioncode VARCHAR(5),
TNewsID BIGINT
)
BEGIN
IF actioncode = 1 then -- Retrive all from the database --
select *
from emp.tbnews;
elseIF actioncode = 2 then -- Retrive all from the database By NewsID --
select NewsID,NewsSubject,NewsSubjectAR,NewsDetails,NewsDetailsAR,CreatedOn,DisplayOrder,
AllowDisplay,img
from emp.tbnews
Where NewsID=TNewsID;
elseIF actioncode = 3 then -- fkjskldfjklsdf --
select NewsID,NewsSubject,NewsSubjectAR,NewsDetails,NewsDetailsAR,CreatedOn,DisplayOrder,
AllowDisplay,img
from emp.tbnews;
END IF;
END
我真正想要的是在IF语句之前声明内部表
在Sql Server中我这样做
declare @tbTemp table (
a as int,
b as char...etc.
)
因为我想在
之后插入insert语句IF actioncode = 1
Insert into @tbTemp
所以,如果你知道如何告诉我如何
对每个人都表示最好的问候。
答案 0 :(得分:4)
create temporary table tmp
(
id int unsigned not null,
name varchar(32) not null
)
engine=memory; -- change engine type if required e.g myisam/innodb
insert into tmp (id, name) select id, name from foo... ;
-- do more work...
select * from tmp order by id;
drop temporary table if exists tmp;
或
create temporary table tmp engine=memory select id, name from foo... ;
-- do more work...
select * from tmp order by id;
drop temporary table if exists tmp;
答案 1 :(得分:0)
你的意思是CREATE TEMPORARY TABLE
?它是一个特定于运行语句的连接的内存表,因此除非您运行持久连接,否则不必担心名称冲突。