Table of contents
Collapse the table of content
Expand the table of content


Owen Duncan|Last Updated: 10/5/2018
1 Contributor

Performs an inner join of a table with another table. The tables are joined on common columns (by name) in the two tables. If the two tables have no common column names, an error is returned.


NATURALINNERJOIN(<leftJoinTable>, <rightJoinTable>)  


leftJoinTableA table expression defining the table on the left side of the join.
rightJoinTableA table expression defining the table on the right side of the join.

Return Value

A table which includes only rows for which the values in the common columns specified are present in both tables. The table returned will have the common columns from the left table and other columns from both the tables.


There is no sort order guarantee for the results.

Columns being joined on must have the same data type in both tables.

Only columns from the same source table (have the same lineage) are joined on. For example, Products[ProductID], WebSales[ProductdID], StoreSales[ProductdID] with many-to-one relationships between WebSales and StoreSales and the Products table based on the ProductID column, WebSales and StoreSales tables are joined on [ProductID].

Strict comparison semantics are used during join. There is no type coercion; for example, 1 does not equal 1.0.

© 2018 Microsoft