![]() SELECT a.id, a.subject FROM pages AS a INNER JOIN articles AS b ON a.subject b.id WHERE a.id Note that using a.id you will get id column from table pages, if you want to get id from table articles just change to b.id. Full outer join (or full join) This will return all rows, as long as there's matching data in one of the tables. You need to use alias before your column names, try to add them. Right outer join (or right join) This will return rows that have data in the right table (right of the JOIN keyword), even if there's no matching rows in the left table. Left outer join (or left join) This will return rows that have data in the left table (left of the JOIN keyword), even if there's no matching rows in the right table. These are different in a subtle way Inner join This will only return rows when there is at least one row in both tables that match the join condition. Join TypesÄepending on your requirements, you can do an "inner" join or an "outer" join. You can use multiple joins in the same SQL statement to query data from as many tables as you like. These two columns contain data that is shared across both tables. If the join condition evaluates to true (or 1), the columns of rows from both albums and artists tables are included in the result set. ![]() When you perform a SQL join, you specify one column from each table to join on. In this example, the INNER JOIN clause matches each row from the albums table with every row from the artists table based on the join condition ( artists.ArtistId albums.ArtistId) specified after the ON keyword. The SQL "join" refers to using the JOIN keyword in a SQL statement in order to query data from two tables.
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