How to update Impala from Excel

The CData Excel Add-In for Impala enables you to edit and save Impala data directly from Excel. This article explains how to transfer data from Excel to Impala. This technique is useful if you want to work on Impala data in Excel and update changes, or if you have a whole spreadsheet you want to import into Impala. In this example, you will use the Customers table; however, the same process will work for any table that can be retrieved by the CData Excel Add-In.

Establish a Connection

If you have not already done so, create a new Impala connection by clicking From Impala on the ribbon.

In order to connect to Apache Impala, set the Server, Port, and ProtocolVersion. You may optionally specify a default Database. To connect using alternative methods, such as NOSASL, LDAP, or Kerberos, refer to the online Help documentation.

Retrieve Data from Impala

To insert data into Impala, you will first need to retrieve data from the Impala table you want to add to. This links the Excel spreadsheet to the Impala table selected: After you retrieve data, any changes you make to the data are highlighted in red.

1. Click the From Impala button on the CData ribbon. The Data Selection wizard is displayed.
2. In the Table or View menu, select the Customers table.
3. In the Maximum Rows menu, select the number of rows you want to retrieve. If you want to insert rows, you need to retrieve only one row. The Query box will then display the SQL query that corresponds to your request.
4. In the Sheet Name box, enter the name for the sheet that will be populated. By default the add-in will create a new sheet with the name of the table.

Insert Rows to Impala

After retrieving data, you can add data from an existing spreadsheet in Excel.

1. In a cell after the last row, enter a formula referencing the corresponding cell from the other spreadsheet; for example, =MyCustomersSheetInExcel!A1.
2. After using a formula to reference the cells you want to add to Impala, select the cells that you are inserting data into and drag the formula down as far as needed. The referenced values you want to add will be displayed on the Customers sheet.
3. Highlight the rows you want to insert and click the Update Rows button.

As each row is inserted, the Id value will appear in the Id column and the row's text will change to black, indicating that the record has been inserted.