MySQL分隔符语句错误

Question

我正在尝试在 mysql 中运行以下脚本:

DELIMITER $$$
DROP TRIGGER IF EXISTS invoice_line_insert
$$$
CREATE TRIGGER invoice_line_insert AFTER INSERT
ON invoice_line FOR EACH ROW
BEGIN
    IF NEW.type = "DELIVERY" THEN
        UPDATE invoice
        SET invoice.etdelivery_amount = invoice.etdelivery_amount + NEW.amount
        WHERE invoice.id_invoice = NEW.invoice_parent_id_invoice;
    ELSE
        UPDATE invoice
        SET invoice.etexpense_amount = invoice.etexpense_amount + NEW.amount
        WHERE invoice.id_invoice = NEW.invoice_parent_id_invoice;
    END IF;
    UPDATE invoice
    SET invoice.vatamount = (NEW.amount * ((
                SELECT vat.rate
                FROM vat
                WHERE vat.id_vat = NEW.vat_id_vat
    ) / 100)) + invoice.vatamount
    WHERE invoice.id_invoice = NEW.invoice_parent_id_invoice;

    UPDATE invoice
    SET invoice.itamount = invoice.vatamount +
            invoice.etdelivery_amount +
            invoice.etexpense_amount
    WHERE invoice.id_invoice = NEW.invoice_parent_id_invoice;
END
$$$

当我在 mySql Workbench 中运行它时，它工作正常，但是当 Play 2 自动运行它时(在一个名为 2.sql 的文件中)我得到以下错误:

您的 SQL 语法有误；检查与您的 MySQL 服务器版本对应的手册，了解在第 1 行 [ERROR:1064, SQLSTATE:42000] 处的“DELIMITER $$$ DROP TRIGGER IF EXISTS invoice_line_insert $$$ CREATE TRIGGER invo”附近使用的正确语法 [ERROR:1064, SQLSTATE:42000]，同时尝试运行此 SQL 脚本:

我在网上看到，分隔符语句只对特定的图形用户界面有效，不是每次都有效。真的吗 ？为什么 ？我需要分隔符语句，如何解决？

感谢您的帮助。

Answer 1

这似乎是 Play framework 2.0 evolutions and create trigger 的副本(请注意，在我看来，更好的答案是 Roger 在 2013 年 5 月 24 日发布的那个，即上面的链接)

进化脚本文本中不能使用“定界符”；我似乎找不到任何文档来说明为什么会这样。但也许这与“定界符”不是 SQL 语句而是 SQL 属性这一事实有关。

但是，Evolutions section of Play 2 docs 中有一个解决方案。 :

Play 将您的 .sql 文件拆分为一系列以分号分隔的语句，然后再对数据库逐一执行。因此，如果您需要在语句中使用分号，请通过输入 ;; 将其转义。代替 ;。例如，INSERT INTO punctuation(name, character) VALUES ('semicolon', ';;');。

所以在你的情况下，

1. 删除“分隔符”属性，并且
2. 使用“;;”代替 ”;”用于您的内部 SQL 语句，以防止 Play 2 解析器单独执行这些内部 SQL 语句。

这是我在 Play 2.3 和 mysql 14.14 Distrib 5.5.40 (Ubuntu 12.04LTS) 中成功测试的示例:

DROP TRIGGER IF EXISTS SOFTWARE_INSERT_CT_TRIGGER;
CREATE TRIGGER SOFTWARE_INSERT_CT_TRIGGER
BEFORE INSERT ON SOFTWARE
FOR EACH ROW
BEGIN
  IF NEW.CREATED_TIME = '0000-00-00 00:00:00' THEN
    SET NEW.CREATED_TIME = NOW();;
  END IF;;
END;

对于您的 SQL 脚本，以下内容应该适用于 Play 2.1 及更高版本(请注意，我尚未对其进行测试):

DROP TRIGGER IF EXISTS invoice_line_insert;
CREATE TRIGGER invoice_line_insert AFTER INSERT
ON invoice_line FOR EACH ROW
BEGIN
  IF NEW.type = "DELIVERY" THEN
    UPDATE invoice
    SET invoice.etdelivery_amount = invoice.etdelivery_amount + NEW.amount
    WHERE invoice.id_invoice = NEW.invoice_parent_id_invoice;;
  ELSE
    UPDATE invoice
    SET invoice.etexpense_amount = invoice.etexpense_amount + NEW.amount
    WHERE invoice.id_invoice = NEW.invoice_parent_id_invoice;;
  END IF;;
  UPDATE invoice
  SET invoice.vatamount = (NEW.amount * ((
    SELECT vat.rate
    FROM vat
    WHERE vat.id_vat = NEW.vat_id_vat
  ) / 100)) + invoice.vatamount
  WHERE invoice.id_invoice = NEW.invoice_parent_id_invoice;;

  UPDATE invoice
  SET invoice.itamount = invoice.vatamount +
    invoice.etdelivery_amount +
    invoice.etexpense_amount
  WHERE invoice.id_invoice = NEW.invoice_parent_id_invoice;;
END;