Question

我有一个名为Percentages的表，其中一个名为5StarResults的列，我想用存储过程名称5star的结果填充它。

当我使用'Call 5star'时，它只返回一个百分比，我希望这个百分比插入百分比表。

请帮忙，我试过编辑程序以包含一个Insert但它总是返回说插入了0行。

谢谢

编辑，

存储过程如下

BEGIN
  declare Rating5Total int default 5;
  declare Rating5Win int default 5;
  declare 5StarPerformance decimal;
  set Rating5Total = (select COUNT(Ratings) from vHighPerformance where Ratings = 7);
  set Rating5Win = (select COUNT(Results) from vHighPerformance where Ratings = 7 and Results = 1);
  set 5StarPerformance = Rating5Win*100.0/Rating5Total;
  Select 5StarPerformance;
END

Answer 1

如果选项是在同一存储过程中执行INSERT，则以下代码应该起作用：

CREATE PROCEDURE `5star`()
BEGIN
    DECLARE Rating5Total INT DEFAULT 5;
    DECLARE Rating5Win INT DEFAULT 5;
    DECLARE 5StarPerformance DECIMAL(18, 3);
    SET Rating5Total := (SELECT COUNT(Ratings) FROM vHighPerformance WHERE Ratings = 7);
    SET Rating5Win := (SELECT COUNT(Results) FROM vHighPerformance WHERE Ratings = 7 AND Results = 1);
    SET 5StarPerformance := Rating5Win*100.0/Rating5Total;
    /* INSERT INTO percentages (percentage) VALUES (5StarPerformance); */
    INSERT INTO percentages (id, percentage) VALUES (1, 5StarPerformance)
       ON DUPLICATE KEY UPDATE percentage = 5StarPerformance;
    SELECT 5StarPerformance;
END$$

在SQL Fiddle中可以看到一个例子。

<强>更新

如果您需要在表percentages上创建一条记录，则可以进行UPSERT。请参阅更新的代码。

将存储过程的结果插入现有表中

1 个答案: