Kim, > I have a pretty complex (at least for me) scenario which I really > can't work out the logic of. I have two tables with the following > layout: > > table 1: invoice > ---------------------------------- > invoice_id > order_id > customer_id > invoice_timestamp > invoice_total > ...etc (only unique names) > > table 2: invoice_archive > ---------------------------------- > invoice_id > invoice_journal_id > > > By doing a UNION select on the invoice_id's of these two tables, I get > a list of ID's from both of them. Since they are unique, this works > pretty good - but I want all the columns aswell! I've seen some JOIN > examples before, which fetches values from two tables (B and C) based > on values from table A, but since the ID is only present in one of > them at a time in my scenario, I really can't work it out.
What exactly do you mean by "present in one of them"? Can you give us the sample data from which you derive the result below? > I want to have my output displayed something like this: > > +------------+----------+-------------+-------------------+---------------+- -------------------+ > | invoice_id | order_id | customer_id | invoice_timestamp | > invoice_total | invoice_journal_id | > +------------+----------+-------------+-------------------+---------------+- -------------------+ > | 1 | 1000 | 1 | 123131332131 | > 1232 | NULL | > | 2 | NULL | NULL | NULL | > NULL | 21 | > +------------+----------+-------------+-------------------+---------------+- -------------------+ > > As you probably understand from this example above, each "invoice_id" > is only present in one of the tables, therefore the NULL values. > > How can I accomplish something like this? See above. Martijn Tonies Database Workbench - development tool for MySQL, and more! Upscene Productions http://www.upscene.com My thoughts: http://blog.upscene.com/martijn/ Database development questions? Check the forum! http://www.databasedevelopmentforum.com -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
