Mysql join two tables and add column values

Posted by Mike on Stack Overflow See other posts from Stack Overflow or by Mike
Published on 2010-05-10T16:00:53Z Indexed on 2010/05/10 16:04 UTC
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mysql

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join

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sum

My knowledge of mysql is not very in depth. If I have two tables that for example look like this:

Table1
Date        v1  v2  v3
05/01/2010  26  abc 45
05/02/2010  31  def 25
05/03/2010  50  ghi 46

Table2
Date        v1 v2  v3
05/01/2010  42 jkl 15
05/02/2010  28 mno 14
05/03/2010  12 pqr 64

How can I join them in a query by their date and have the sum of table1.v1 and table2.v1 and also have the sum of table1.v3 and table2.v3. V2 should be ignored.

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