inner join

Computing Dictionary

inner join definition

(Commonly "join", but see also "outer join") A relational database operation which selects rows from two tables such that the value in one column of the first table also appears in a certain column of the second table.
An example in SQL:
select * from A, B where A.x = B.y
The column names (x and y in this example) are often, but not necessarily, the same.

The Free On-line Dictionary of Computing, © Denis Howe 2010
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