Oracle SQL 错误 ORA-00933：SQL 命令未正确结束答案

【问题标题】：Oracle SQL Error ORA-00933: SQL command not properly endedOracle SQL 错误 ORA-00933：SQL 命令未正确结束
【发布时间】：2015-10-18 15:33:23
【问题描述】：

这个查询有什么问题？

SELECT F.PART_NUM, F.DESCRIPTION, S.PART_NUM, S.DESCRIPTION, F.CLASS 
FROM PART F, PART S 
WHERE F.CLASS = S.CLASS AND F.PART_NUM < customer_num =" ORDERS.CUSTOMER_NUM" 
customer_name =" 'Johnson''s"> SELECT ORDERS.ORDER_NUM, ORDER_DATE
FROM ORDERS, ORDER_LINE, PART
WHERE ORDERS.ORDER_NUM = ORDER_LINE.ORDER_NUM
AND ORDER_LINE.PART_NUM = PART.PART_NUM
AND DESCRIPTION = 'Iron';

【问题讨论】：

在" 'Johnson''s"之后的分号;
它有很多问题，很难开始。这里有一些明显的：没有使用正确的JOIN 语法；子查询周围没有括号； > 似乎指的是两列； ORDERS.CUSTOMER_NUM 周围的双引号。
双引号用于标识符，例如“列名”。对字符串文字使用单引号，例如“约翰逊”。
customer_num =" ORDERS.CUSTOMER_NUM" customer_name =" 'Johnson''s"> SELECT ORDERS.ORDER_NUM, ORDER_DATE 应该做什么？

标签： sql oracle ora-00933

【解决方案1】：

很难为表结构提供正确答案并解释您尝试实现的业务逻辑，但我认为您想要这样的东西：

SELECT F.PART_NUM, F.DESCRIPTION, S.PART_NUM, S.DESCRIPTION, F.CLASS 
FROM PART F, PART S 
     , ( SELECT customer_num
               , customer_name
               , order_line.part_num
        FROM ORDERS, ORDER_LINE 
        WHERE ORDERS.ORDER_NUM = ORDER_LINE.ORDER_NUM ) o
WHERE F.CLASS = S.CLASS 
AND F.PART_NUM < o.customer_num 
and o.customer_name ='Johnson''s'
AND o.PART_NUM = PART.PART_NUM
AND DESCRIPTION = 'Iron';

【讨论】：