| <table><tr><td>Merge Method</td><td>Description</td><td>Note</td></tr><tr><td>Inner Join</td><td>Keeps only rows where ‘key variable’ matches in both data sets</td><td/></tr><tr><td>Outer Join</td><td>Keeps all rows from both datasets, adding NaN or nulls where no match is found.</td><td/></tr><tr><td>Partial Outer Join</td><td>Keep all rows from the data set with the highest priority and add matched rows from the second data set.</td><td>You must specify the data sources to include.</td></tr><tr><td>Anti-Join</td><td>Adds rows with non-matching key value from the data sources to the new data source</td><td/></tr></table> |