对于存储过程,我想进行SELECT,并将列的值存储到变量中。
我该怎么做呢?
我想做这样的事情:
DECLARE countTemp INT;
SET countTemp=(SELECT COUNT(Name) FROM mytable WHERE Name= var_name LIMIT 0,1);
或者,像这样:
DECLARE countTemp INT;
SELECT countTemp=ColumnXYZ FROM mytable WHERE Name= var_name LIMIT 0,1;
但是,我试过这些,MySQL说我的语法不正确;我该怎么办?
像这样 :
DECLARE myvar nvarchar(50);
SELECT ATextColumn INTO myvar FROM myTable LIMIT 1,1;
SELECT CONCAT('myvar is ',myvar ,' .');
http://www.java2s.com/Code/SQL/Procedure-Function/UseselectintotoassignvaluetoanIntegervariable.htm
您可以在select查询中轻松设置变量
SELECT @countTemp := ColumnXYZ FROM mytable WHERE Name= var_name LIMIT 0,1;
@countTemp是你的变量!