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，但是当播放2以自动方式运行它（在一个名为2.sql的文件中）时，我收到以下错误：

您的SQL语法有错误;查看与您的MySQL服务器版本相对应的手册，以便在正确的语法附近使用DELILITER $$$ DROP TRIGGER IF EXISTS invoice_line_insert $$$ CREATE TRIGGER invo＆＃39;在第1行[错误：1064，SQLSTATE：42000]，尝试运行此SQL脚本时：

我在网上看到，分隔符语句只适用于特定的gui，而不是每次都有。真的吗？为什么？如何解决它，因为我需要分隔符语句？

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日发布的答案，即上面的链接）

“delimiter”不能用于进化脚本文本;我似乎无法找到任何文件，为什么会这样。但也许这与“delimiter”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.sql文件拆分为一系列以分号分隔的语句，然后逐个对数据库执行它们。因此，如果您需要在语句中使用分号，请输入;;代替 ;。例如，INSERT INTO标点符号（名称，字符）VALUES（'分号'，';;'）;。

所以在你的情况下，

删除“分隔符”属性，
使用“;;”代替 ”;”对于内部 SQL语句，以防止Play 2解析器单独执行这些内部SQL语句。

以下是我在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SQL脚本，以下内容适用于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;

MySQL分隔符语句错误

1 个答案: