An inner join returns a result table for all the rows in a table that have one or more matching rows in the other table(s), as specified by the sql-expression. Inner joins can be performed on up to 32 ...

A Self-join in SQL is a join operation where a table is joined with itself. In a self-join, a table is aliased to give it a different name and then used twice in the same query, once as the left table ...