在MYSQL存儲過程中將UNION查詢的結果保存在本地變量中

Question

在我的MySQL Stoared過程中我想將波紋管查詢的結果存儲到局部變量中。

MySQL的SP

BEGIN 
Declare temp_ID bigint; 
Declare temp_teamName Text; 
(select ID,team1 from tbl_tournament_matches where leveID = 1 and tournamentID = 91 and matchType = 'L') 
UNION 
(select ID,team1 from tbl_tournament_matches where leveID = 2 and tournamentID = 91 and looserTeam is not null) 
ORDER BY RAND() LIMIT 0,1; 
select temp_ID, temp_teamName; 
END; 

如何傳遞查詢的結果爲局部變量？ 注意：上面的SP將只返回1行。

Answer 1

無需將該值存儲到變量中即可實現此目的。

SELECT * FROM(

select ID,team1 from tbl_tournament_matches where leveID = 1 and tournamentID = 91 and matchType = 'L' 

UNION 

select ID,team1 from tbl_tournament_matches where leveID = 2 and tournamentID = 91 and looserTeam is not null 
) ORDER BY RAND() LIMIT 0,1 

但是，如果你想存儲供以後使用的值，可以使用INTO關鍵字：

SELECT id, data INTO @x, @y FROM test.t1 LIMIT 1; 

http://dev.mysql.com/doc/refman/5.0/en/select-into.html