mysql - 如何将查询结果存入mysql的变量中

Question

我是 mysql 新手，我正在 phpmyadmin 中编写以下函数:

BEGIN
declare @var1 int;
declare @var2 int;

set @var1 = 0;
set @var2 = 0;

count(*) 
into @var1
from transactions 
where reg_date > DATE_SUB(CURDATE(),INTERVAL 90 DAY) 
and reg_date <= CURDATE() = last_transactions;

count(*) 
into @var2
from account 
where exp_date > CURDATE() 
AND reg_date > DATE_SUB(CURDATE(),INTERVAL 90 DAY);


return @var2/@var1;
END

我总是收到 1064 错误。预先感谢您。

Answer 1

BEGIN
declare @var1 int;
declare @var2 int;

set @var1 = 0;
set @var2 = 0;

select count(*) as count into @var1  
from transactions 
where reg_date > DATE_SUB(CURDATE(),INTERVAL 90 DAY) 
and reg_date <= CURDATE() = last_transactions;

select count(*) as count into @var2
from account 
where exp_date > CURDATE() 
AND reg_date > DATE_SUB(CURDATE(),INTERVAL 90 DAY);
return @var2/@var1;
END