Question

我是PL / SQL的新手，并尝试将SQL语句转换为PL / SQL格式。我的SQL语句为：

SELECT StudentIDNumber
FROM Lease
INNER JOIN Invoice
ON Invoice.LeaseID = Lease.LeaseID
WHERE IsPaid = 'N';

我该怎么做？任何解决方案将不胜感激！

Answer 1

我认为您只需要在Oracle中指定您的架构即可。其他语法应该是正确的（假设您的表来自相同的Schema /表）：

SELECT StudentIDNumber
FROM PRODDATA.Lease
INNER JOIN Invoice
ON Invoice.LeaseID = Lease.LeaseID
WHERE IsPaid = 'N';

Oracle提供的这份文档还有一些基本的语法更改，可能对您有用https://docs.oracle.com/cd/E10405_01/appdev.120/e10379/ss_oracle_compared.htm

Answer 2

可能会在PlSQL片段下面尝试？

DECLARE
   TYPE lv_student_ID IS TABLE OF NUMBER;
BEGIN
   -- assuming you are trying to find all students who have not yet paid, you can use a nested table
   SELECT StudentIDNumber
     BULK COLLECT INTO lv_student_ID
     FROM Lease INNER JOIN Invoice ON Invoice.LeaseID = Lease.LeaseID
    WHERE IsPaid = 'N';

   -- use value as you want
   DBMS_OUTPUT.put_line (lv_student_ID.COUNT);
END;

在SQL中将SQL查询转换为PL / SQL

2 个答案: