Oracle 存储过程中的 UNION

Posted 2023-03-27

【中文标题】Oracle 存储过程中的 UNION

【英文标题】：UNION in Oracle Stored Procedure

【发布时间】：2014-03-12 21:05:21

【问题描述】：

我正在尝试在 Oracle 中做最基本的存储过程。我只是想返回由联合加入的 2 个查询...代码如下：

CREATE OR REPLACE PROCEDURE GETATMCONTRACTSBYMANAGERID  (
   MANAGERID IN NUMBER
) AS 
BEGIN
  select t.ID, t."NUMBER", t.TITLE, t.NOTES, t.CONTRACT_TYPE_ID as CONTRACT_TYPE_ID,   t.CONTRACT_STATUS_ID as CONTRACT_STATUS_ID, t.TASK_NUMBER as TASK_NUMBER, c.CONSULTANT_ID,t.TASK_MANAGER_ID, t.IS_COMPREHENSIVE, t."NUMBER", TO_DATE(SUBSTR(t."NUMBER", 8, 2), 'rr')  as val, SUBSTR(t."NUMBER", 11, 3) as val2, t.REF_ID from CONTRACT t INNER JOIN CONTRACT c on c.ID = t.REF_ID
  where t.TASK_MANAGER_ID = MANAGERID;
  UNION 
  select t.ID, t."NUMBER", t.TITLE, t.NOTES, t.CONTRACT_TYPE_ID as CONTRACT_TYPE_ID, t.CONTRACT_STATUS_ID as CONTRACT_STATUS_ID, t.TASK_NUMBER as TASK_NUMBER, t.CONSULTANT_ID, t.TASK_MANAGER_ID, t.IS_COMPREHENSIVE, t."NUMBER", TO_DATE(SUBSTR(t."NUMBER", 8, 2), 'rr')  as val, SUBSTR(t."NUMBER", 11, 3) as val2, t.REF_ID from CONTRACT t
  where t."NUMBER" in (select "NUMBER" from Contract t1 where t1.TASK_MANAGER_ID = MANAGERID)
    and t.TASK_NUMBER = ' '
  order by val desc, val2 desc, TASK_NUMBER asc;
END GETATMCONTRACTSBYMANAGERID;

我将是第一个承认我对 SQL Server 比对 oracle 更舒服的人，但对我来说它似乎应该可以工作。

它返回的错误是：

错误（7,1）：PLS-00103：在预期以下情况之一时遇到符号“UNION”：（begin case declare end exception exit for goto if loop mod null pragma raise return select update while with

对于这个问题的任何帮助将不胜感激:)

【问题讨论】：

您当前的问题是UNION 之前的分号。但是，一旦您解决了这个问题，您就会遇到另一个问题，因为您不使用查询的结果。你想做什么？

【参考方案1】：

union 运算符之前有一个多余的分号 (;) - 只需将其删除即可：

select t.ID, t."NUMBER", t.TITLE, t.NOTES, t.CONTRACT_TYPE_ID as CONTRACT_TYPE_ID,   t.CONTRACT_STATUS_ID as CONTRACT_STATUS_ID, t.TASK_NUMBER as TASK_NUMBER, c.CONSULTANT_ID,t.TASK_MANAGER_ID, t.IS_COMPREHENSIVE, t."NUMBER", TO_DATE(SUBSTR(t."NUMBER", 8, 2), 'rr')  as val, SUBSTR(t."NUMBER", 11, 3) as val2, t.REF_ID from CONTRACT t INNER JOIN CONTRACT c on c.ID = t.REF_ID
  where t.TASK_MANAGER_ID = MANAGERID -- Semicolon removed here
  UNION 
  select t.ID, t."NUMBER", t.TITLE, t.NOTES, t.CONTRACT_TYPE_ID as CONTRACT_TYPE_ID, t.CONTRACT_STATUS_ID as CONTRACT_STATUS_ID, t.TASK_NUMBER as TASK_NUMBER, t.CONSULTANT_ID, t.TASK_MANAGER_ID, t.IS_COMPREHENSIVE, t."NUMBER", TO_DATE(SUBSTR(t."NUMBER", 8, 2), 'rr')  as val, SUBSTR(t."NUMBER", 11, 3) as val2, t.REF_ID from CONTRACT t
  where t."NUMBER" in (select "NUMBER" from Contract t1 where t1.TASK_MANAGER_ID = MANAGERID)
    and t.TASK_NUMBER = ' '
  order by val desc, val2 desc, TASK_NUMBER asc;

【参考方案2】：

除了分号问题，您还需要选择 INTO 变量来编译您的代码。