Oracle:重复密钥更新 [英] Oracle: ON DUPLICATE KEY UPDATE

问题描述

我正在尝试实施从Michiel de Mare的此处找到的解决方案，以用一个更新多个记录(最好在语法意义上简单)查询.我尝试从中学习的示例代码如下:

I'm trying to implement a solution I found over here from Michiel de Mare to update multiple records with one (preferably-simple-in-a-syntax-sense) query. The example code that I am trying to learn from looks like this:

INSERT INTO table (id,Col1,Col2) VALUES (1,1,1),(2,2,3),(3,9,3),(4,10,12) ON DUPLICATE KEY UPDATE Col1=VALUES(Col1),Col2=VALUES(Col2);

我正在使用Oracle(并且还不太熟悉SQL查询).

I'm using Oracle (and am not yet well versed in SQL queries).

基于一些动态内容，我将查询与上面的内容串联在一起.它的长度可能会有所不同，具体取决于我要更新的记录数量，但这是我生成的查询的示例:

Based on some dynamic content, I have concatenated my query similar to the above. It can vary in length depending on how many records I am updating, but this is an example of a query that I generated:

INSERT INTO my_table (question_id,ug) VALUES (30,0),(31,1) ON DUPLICATE KEY UPDATE ug=VALUES(ug) 

上面的查询出现此错误:

The above query is getting this error:

Native message: ORA-00933: SQL command not properly ended

我正在处理一个内容管理系统，该系统具有一个运行查询的函数调用；在这个框架内.我不认为这是相关的，但我从来不需要加上';'.但是，在查询结束时，我尝试使用和不使用分号.

I am dealing with a content management system that has a function call that runs the queries; within this framework. I don't think it is pertinent, but I have never needed to put a ';' on the end of queries, however, I tried it with and without the semicolon.

推荐答案

Oracle没有on duplicate key update使用MERGE代替:

Oracle doesn't have on duplicate key update Use MERGE instead:

MERGE INTO my_table trg  
USING (SELECT 30 as question_id,0 as ug FROM DUAL
UNION ALL 
SELECT 31,1 FROM DUAL) src ON (src.question_id = trg.question_id)
WHEN NOT MATCHED THEN INSERT(question_id, ug) VALUES
(src.question_id, src.ug)
WHEN MATCHED THEN UPDATE
SET trg.ug = src.ug

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