Question

我刚刚在Windows 10上安装了Bash，安装了libmysqlclient-dev软件包并运行了一个执行以下查询的rake任务，使用ActiveRecord :: Base.connection.execute <在mysql数据库上创建VIEW / p>

DROP TABLE IF EXISTS debtors_customer_balances;
CREATE OR REPLACE VIEW debtors_customer_balances AS
  SELECT
    customer_id,
    SUM(amount_cents) AS total_cents,
    SUM(CASE
          WHEN due_on >= CURDATE()
          THEN amount_cents
          ELSE 0
          END) AS current_cents,
    SUM(CASE
          WHEN due_on >= (CURDATE() - INTERVAL 7 DAY)
          AND  due_on < CURDATE()
          THEN amount_cents
          ELSE 0
          END) AS overdue7_cents,
    SUM(CASE
          WHEN due_on >= (CURDATE() - INTERVAL 14 DAY)
          AND  due_on < (CURDATE() - INTERVAL 7 DAY)
          THEN amount_cents
          ELSE 0
          END) AS overdue14_cents,
    SUM(CASE
          WHEN due_on >= (CURDATE() - INTERVAL 30 DAY)
          AND  due_on < (CURDATE() - INTERVAL 14 DAY)
          THEN amount_cents
          ELSE 0
          END) AS overdue30_cents,
    SUM(CASE
          WHEN due_on < (CURDATE() - INTERVAL 30 DAY)
          THEN amount_cents
          ELSE 0
          END) AS overdue30_plus_cents
  FROM
    debtors_balances
  GROUP BY
    customer_id;

然而，它正在抛出错误

Mysql2 ::错误：您的SQL语法中有错误;检查手册对应于您的MySQL服务器版本，以获得正确的语法使用near＆＃39;创建或替换视图debtors_customer_balances AS SELECT ＆＃39;在第2行：DROP TABLE IF EXISTS debtors_customer_balances;创建或 REPLACE VIEW debtors_customer_balances AS SELECT customer_id等......

我无法弄清楚导致这种情况的原因是因为查询在Mac上运行良好，它只是在bash for windows中我似乎得到了这种语法错误。

我使用的宝石是mysql2（0.3.18）

Answer 1

这是由第一行DROP TABLE IF EXISTS debtors_customer_balances;引起的，实际应该是DROP VIEW ...。删除第一行，它应该工作。无论如何，您正在使用CREATE OR REPLACE VIEW debtors_customer_balances那么之前添加DROP语句的含义是什么？

创建VIEW时出现Mysql2语法错误

1 个答案: