将值（行）从表添加到另一个仅用于匹配变量

Question

我正在研究不同年份（2009年至2014年）的铁路数据，但最近又分别收到了两年（2015年和2016年）的数据。所以我目前的表格如下：

表1

YEAR....REV1....REV2....REV3....REV4....ORG....DEST  
2009.....12......14.....15......16......ABC.....ABD  
2010.....12......14.....15......16......ABC.....ABD  
2011.....12......14.....15......16......ABC.....ABD  
2012.....12......14.....15......16......ABC.....ABD  
2013.....12......14.....15......16......ABC.....ABD  
2014.....12......14.....15......16......ABC.....ABD  
2009.....12......14.....15......16......XYZ.....XCV  
2010.....12......14.....15......16......XYZ.....XCV  
2011.....12......14.....15......16......XYZ.....XCV  
2012.....12......14.....15......16......XYZ.....XCV  
2013.....12......14.....15......16......XYZ.....XCV  
2014.....12......14.....15......16......XYZ.....XCV  

请注意，值12,14,15,16只是我现在写的随机数，值不同，一年不同。并且列表继续为每个不同的ORG和DEST对提供行。

表2（2015）

YEAR....REV1....REV2....REV3....REV4....ORG....DEST  
2015.....12......14.....15......16......ABC.....ABD  
2015.....12......14.....15......16......XYZ.....XCV  
2015.....12......14.....15......16......VRF.....AVC  
2015.....12......14.....15......16......DRE.....ACS  
2015.....12......14.....15......16......FRE.....AWD  

表3（2016）

YEAR....REV1....REV2....REV3....REV4....ORG....DEST  
2016.....12......14.....15......16......ABC.....ABD  
2016.....12......14.....15......16......XYZ.....XCV  
2016.....12......14.....15......16......VRF.....AVC  
2016.....12......14.....15......16......DRE.....ACS  
2016.....12......14.....15......16......FRE.....AWD  

我想要的是一张包含所有年份的表格，但只添加ORG AND DEST基础上的表格，因为新表格（2015年和2016年）包含许多其他ORG对的数据DEST我不感兴趣，而只是我在第一张表中的那些，如下所示：

表1

YEAR....REV1....REV2....REV3....REV4....ORG....DEST  
2009.....12......14.....15......16......ABC.....ABD  
2010.....12......14.....15......16......ABC.....ABD  
2011.....12......14.....15......16......ABC.....ABD  
2012.....12......14.....15......16......ABC.....ABD  
2013.....12......14.....15......16......ABC.....ABD  
2014.....12......14.....15......16......ABC.....ABD
2015 ....12......14.....15......16......ABC.....ABD
2016.....12......14.....15......16......ABC.....ABD
2009.....12......14.....15......16......XYZ.....XCV  
2010.....12......14.....15......16......XYZ.....XCV  
2011.....12......14.....15......16......XYZ.....XCV  
2012.....12......14.....15......16......XYZ.....XCV  
2013.....12......14.....15......16......XYZ.....XCV  
2014.....12......14.....15......16......XYZ.....XCV  
2015.....12......14.....15......16......XYZ.....XCV
2016.....12......14.....15......16......XYZ.....XCV  

我对SQL比较陌生，所以一直在阅读内部联接，但它似乎添加了列而不是我想要的行。关于我如何做到这一点的任何想法？

提前谢谢。

Answer 1

UNION会成功，尝试下面的代码

     SELECT * FROM Table1
     UNION
     SELECT * FROM Table2 WHERE `ORG` LIKE 'XYZ' AND `DEST` LIKE 'XCV'
     UNION
     SELECT * FROM Table3 WHERE `ORG` LIKE 'XYZ' AND `DEST` LIKE 'XCV'

Answer 2

+1为您的努力。 Join适用于匹配2个不同的列。根据{{​​1}}

中的ORG和DEST条件，您想要的是union个不同的表格

where

如果您还想要重复数据，请使用 SELECT * FROM Table1 UNION SELECT * FROM Table2 WHERE `ORG` LIKE 'XYZ' AND `DEST` LIKE 'XCV' UNION SELECT * FROM Table3 WHERE `ORG` LIKE 'XYZ' AND `DEST` LIKE 'XCV' 代替union。