mysql 使用 phpmyadmin 在存储过程中调用函数

Question

我有以下有效的代码：

BEGIN
  DECLARE done INT DEFAULT FALSE;
  DECLARE user_id int(11);
  DECLARE cur1 CURSOR FOR SELECT id FROM users;
  DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = TRUE;

  # drop and re-create user_rank TABLE

  DROP TABLE IF EXISTS user_rank;

  CREATE TABLE `user_rank` (
    `id` int(11) UNSIGNED NOT NULL,
    `has_hobbies` int(3) DEFAULT 0,
    `passed_test` int(3) DEFAULT 0,
    `has_picture` int(3) DEFAULT 0,
    `won_a_job` int(3) DEFAULT 0,
    `is_prolancer` int(3) DEFAULT 0,
    `is_verified` int(3) DEFAULT 0,
    `has_portfolio` int(3) DEFAULT 0,
    `has_likes` int(3) DEFAULT 0,
    `has_disputes` int(3) DEFAULT 0,
    `has-earnings` int(3) DEFAULT 0,
    `has_feebacks` int(3) DEFAULT 0,
    `has_invitations` int(3) DEFAULT 0,
    `has_views` int(3) DEFAULT 0
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

ALTER TABLE `user_rank`
    ADD PRIMARY KEY (`id`);

ALTER TABLE `user_rank`
    MODIFY `id` int(11) UNSIGNED NOT NULL AUTO_INCREMENT;

OPEN cur1;

read_loop: LOOP
FETCH cur1 INTO user_id;
IF done THEN
  LEAVE read_loop;
END IF;
INSERT INTO user_rank (id) values (user_id);
END LOOP;

CLOSE cur1;
END

它使用游标在 table 用户内部循环并将所有用户 ID 复制到 table user_rank。我在我的数据库中定义了一个名为 "hasUserPassedTest" 的函数，它给定了一个用户 ID return 10 或 0。我想在上面的循环中调用该函数并将其插入 user_rank table 但以下代码不起作用：

BEGIN
DECLARE done INT DEFAULT FALSE;
DECLARE user_id int(11);
DECLARE cur1 CURSOR FOR SELECT id FROM users;
DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = TRUE;

# drop and re-create user_rank TABLE

DROP TABLE IF EXISTS user_rank;

CREATE TABLE `user_rank` (
    `id` int(11) UNSIGNED NOT NULL,
    `has_hobbies` int(3) DEFAULT 0,
    `passed_test` int(3) DEFAULT 0,
    `has_picture` int(3) DEFAULT 0,
    `won_a_job` int(3) DEFAULT 0,
    `is_prolancer` int(3) DEFAULT 0,
    `is_verified` int(3) DEFAULT 0,
    `has_portfolio` int(3) DEFAULT 0,
    `has_likes` int(3) DEFAULT 0,
    `has_disputes` int(3) DEFAULT 0,
    `has-earnings` int(3) DEFAULT 0,
    `has_feebacks` int(3) DEFAULT 0,
    `has_invitations` int(3) DEFAULT 0,
    `has_views` int(3) DEFAULT 0
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

ALTER TABLE `user_rank`
    ADD PRIMARY KEY (`id`);

ALTER TABLE `user_rank`
    MODIFY `id` int(11) UNSIGNED NOT NULL AUTO_INCREMENT;

OPEN cur1;

read_loop: LOOP
    FETCH cur1 INTO user_id;
    IF done THEN
    LEAVE read_loop;
    END IF;
    INSERT INTO user_rank (id, has_hobbies) values (user_id, CALL 
    hasUserPassedTest(user_id));
 END LOOP;

  CLOSE cur1;
END

我正在使用 CALL 在存储过程中调用我的函数，但不起作用。如何在存储过程中调用我的函数？

Answer 1

I am using CALL to invoke my function inside the stored procedure but does not work

CALL不用于执行函数。

CALL Statement

The CALL statement invokes a stored procedure that was defined previously with CREATE PROCEDURE.

it loops inside the table users using a cursor and copy all the user ids into the table user_rank.

为什么这么复杂？过程、游标、处理程序、循环...一个简单的查询就足够了：

INSERT INTO user_rank (id, has_hobbies) 
SELECT user_id, hasUserPassedTest(user_id)
FROM users;

更新

插入可以与table创建相结合：

CREATE TABLE `user_rank` (
    `id` int(11) UNSIGNED NOT NULL,
    `has_hobbies` int(3) DEFAULT 0,
    `passed_test` int(3) DEFAULT 0,
    `has_picture` int(3) DEFAULT 0,
    `won_a_job` int(3) DEFAULT 0,
    `is_prolancer` int(3) DEFAULT 0,
    `is_verified` int(3) DEFAULT 0,
    `has_portfolio` int(3) DEFAULT 0,
    `has_likes` int(3) DEFAULT 0,
    `has_disputes` int(3) DEFAULT 0,
    `has-earnings` int(3) DEFAULT 0,
    `has_feebacks` int(3) DEFAULT 0,
    `has_invitations` int(3) DEFAULT 0,
    `has_views` int(3) DEFAULT 0
) ENGINE=InnoDB DEFAULT CHARSET=utf8
SELECT user_id AS id, hasUserPassedTest(user_id) AS has_hobbies
FROM users;

一个微妙之处 - 插入的字段将是 table 结构中的最后一个。如果字段顺序有意义，则必须在选择部分提及所有字段：

CREATE TABLE `user_rank` (
    `id` int(11) UNSIGNED NOT NULL,
    `has_hobbies` int(3) DEFAULT 0,
    `passed_test` int(3) DEFAULT 0,
    `has_picture` int(3) DEFAULT 0,
    `won_a_job` int(3) DEFAULT 0,
    `is_prolancer` int(3) DEFAULT 0,
    `is_verified` int(3) DEFAULT 0,
    `has_portfolio` int(3) DEFAULT 0,
    `has_likes` int(3) DEFAULT 0,
    `has_disputes` int(3) DEFAULT 0,
    `has-earnings` int(3) DEFAULT 0,
    `has_feebacks` int(3) DEFAULT 0,
    `has_invitations` int(3) DEFAULT 0,
    `has_views` int(3) DEFAULT 0
) ENGINE=InnoDB DEFAULT CHARSET=utf8
SELECT user_id AS id, 
       hasUserPassedTest(user_id) AS has_hobbies
       0 AS `passed_test`,
       0 AS `has_picture`,
       0 AS `won_a_job`,
       0 AS `is_prolancer`,
       0 AS `is_verified`,
       0 AS `has_portfolio`,
       0 AS `has_likes`,
       0 AS `has_disputes`,
       0 AS `has-earnings`,
       0 AS `has_feebacks`,
       0 AS `has_invitations`,
       0 AS `has_views`
FROM users;

DROP TABLE 保持单独的查询:(

mysql 使用 phpmyadmin 在存储过程中调用函数

mysql calling a function inside a stored procedure using phpmyadmin

mysql

stored-procedures

stored-functions

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