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Perform a Merge operation To open a query, locate one previously loaded from the Power Query Editor, select a cell in the data, and then select Query > Edit. ... Select Home > Merge Queries. ... Select the primary table from the first drop-down list, and then select a join column by selecting the column header.

The MERGE statement updates a target (a table or view) using data from a source (the result of a table reference or the specified input data). Rows in the target that match the input data can be deleted or updated as specified, and rows that do not exist in the target can be inserted.

Perform a Merge operation To open a query, locate one previously loaded from the Power Query Editor, select a cell in the data, and then select Query > Edit. ... Select Home > Merge Queries. ... Select the primary table from the first drop-down list, and then select a join column by selecting the column header.

Use the COALESCE() Function to Concatenate NULL Values The COALESCE() function in SQL is a built-in function that returns the first non-NULL value in a list of expressions. The function takes one or more arguments and returns the first argument that is not NULL .

Combine tables in Excel by column headers On your Excel ribbon, go to the Ablebits tab > Merge group, and click the Combine Sheets button: Select all the worksheets you want to merge into one. ... Choose the columns you want to combine, Order ID and Seller in this example: Select additional options, if needed.

Click the Data tab and find the "Get Data" command. Click on the "Data" tab again at the top of your spreadsheet. Under the "Get & Transform" group, find the "Get Data" command and click the drop-down menu, then click "Combine Queries." Click "Merge" in the drop-down menu.

Merging tables by rows SELECT. * FROM left_table. ) UNION. ( SELECT. * FROM right_table. ) SELECT. id. FROM left_table. ) UNION ALL. ( SELECT. id. FROM right_table. ) SELECT. id. FROM left_table. ) INTERSECT. ( SELECT. id. FROM right_table. )

Use the UNION ALL clause to join data from columns in two or more tables. In our example, we join data from the employee and customer tables. On the left of the UNION ALL keyword, put the first SELECT statement to get data from the first table (in our example, the table employee ).