Question

我正在尝试在python中使用sqlalchemy运行sql命令，我正在尝试执行的所有查询都成功运行了，而我得到的错误是关于语法的。当我在sql环境中获取代码时，它可以成功运行。这是我要运行的代码（此部分正在运行！）：

con.execute("USE covid19_korea")
con.execute("SET @currdate := (select min(confirmed_date) from facts)")
con.execute("SET @enddate :=  (select DATE_ADD((select max(confirmed_date) from facts), INTERVAL 14 DAY))")

这部分无效：

query = """
        delimiter $$
        DROP PROCEDURE IF EXISTS BuildDate$$
        CREATE PROCEDURE BuildDate()
            BEGIN
                 WHILE @currdate < @enddate DO
                    INSERT INTO Dimension_Date (date, day, month, year, day_name)
                    VALUES (
                             @currdate, DAY(@currdate), MONTH(@currdate), YEAR(@currdate), DAYNAME(@currdate)
                            );
                    SET @currdate:= DATE_ADD(@currdate, INTERVAL 1 DAY);
                END WHILE;

            END$$
        CALL BuildDate();"""

con.execute(query)

这是我得到的错误：

ProgrammingError: (pymysql.err.ProgrammingError) (1064, **"You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'delimiter $$\n        DROP PROCEDURE IF EXISTS BuildDate$$\n        CREATE PROCEDU' at line 1")**
[SQL: 
        delimiter $$
        DROP PROCEDURE IF EXISTS BuildDate$$
        CREATE PROCEDURE BuildDate()
            BEGIN
                 WHILE @currdate < @enddate DO
                    INSERT INTO Dimension_Date (date, day, month, year, day_name)
                    VALUES (
                             @currdate, DAY(@currdate), MONTH(@currdate), YEAR(@currdate), DAYNAME(@currdate)
                            );
                    SET @currdate:= DATE_ADD(@currdate, INTERVAL 1 DAY);
                END WHILE;

            END$$
        CALL BuildDate();]
(Background on this error at: http://sqlalche.me/e/f405)

使用sqlalchemy在Python中执行SQL命令时遇到问题

0 个答案: