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如何通过查询将参数传递给存储过程?

[英]How can I pass parameter to stored procedure through a query?

I have this stored procedure: 我有这个存储过程:

CREATE PROCEDURE `test`(OUT `vote_value` INT, OUT `score` INT, IN `user_id` INT, IN `time_range` INT)
    NO SQL
BEGIN
    SELECT coalesce(sum(vote_value), 0), coalesce(sum(score), 0)
      INTO vote_value, score
    FROM reputations
    WHERE owner_id = user_id
      AND date_time > CASE time_range
          WHEN 'WEEK' 
          THEN  unix_timestamp(DATE_SUB(now(), INTERVAL 1 WEEK))
          WHEN 'MONTH' 
          THEN  unix_timestamp(DATE_SUB(now(), INTERVAL 1 MONTH))
          WHEN 'YEAR' 
          THEN  unix_timestamp(DATE_SUB(now(), INTERVAL 1 YEAR))
          ELSE 1 END;
END

As you see my procedure gets 4 parameters. 如您所见,我的过程获取4个参数。 Both vote_value and score have OUT direction (as result) , And both user_id and time_range have IN Direction. vote_valuescore都具有OUT方向(结果) ,而user_idtime_range都具有IN方向。 So I have to pass those two which have IN direction when I call the procedure. 因此,当我调用该过程时,必须传递具有IN方向的两个。

Ok, I can call procedure about like this: 好的,我可以这样调用程序:

CALL test(@vote_value, @score, 10, 'WEEK');
SELECT @vote_value, @score;

It would work as well. 它也会工作。 But please focus on the third parameter which is 10 . 但请注意第三个参数10 I don't want to pass it manually by hand. 我不想手动通过它。 I want it be a value from a query. 我希望它是来自查询的值。 Something like this: 像这样:

CALL test(@vote_value, @score, u.id, 'WEEK');
SELECT id, @vote_value, @score FROM Users u;

But it throws syntax error . 但这会引发语法错误 Does anybody know how can I do such a thing? 有人知道我该怎么做吗? The expected result is this . 预期的结果是这样

SELECT id into @id FROM Users LIMIT 1;
CALL test(@vote_value, @score, @id, 'WEEK');

Try above code. 尝试上面的代码。

As mention in above code you can get value of that id using SELECT id into @id and then use that @id as parameter for that query. 如上述代码中所述,您可以使用SELECT id into @id获取该id值,然后将该@id用作该查询的参数。

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