Select and load data from a Cloudera Impala database

Once you have created a connection to an Cloudera Impala database, you can select data and load it into a Qlik Sense app. In Qlik Sense, you load data through the Add data dialog or the Data load editor.

The SELECT statement does not include a WHERE clause, but one can be added in the Data load editor after the script built automatically in the script panel is inserted there. The SELECT statement for the Cloudera Impala Connector supports the addition of WHERE clause.

Qlik Sense: Cloudera Impala database properties

Database properties that can be configured
Properties	Description
Database	Shows the databases (catalogs) on the server if the corresponding option is turned on in the connection dialog.
Owner	Shows the owners of tables in the database if the corresponding option is turned on in the connection dialog.
Tables	Shows the tables associated with the selected owner. Selecting a table will cause the table fields to be displayed in the Data preview tab.
Data preview	Shows a preview of the fields and data of the selected table.
Metadata	Shows a table of the fields and whether they are primary keys. Primary key fields are also labeled with a key icon beside the field name. Information noteWhen using the ODBC (via Direct Access gateway) connector, primary key fields will only be shown if the Load PK metadata connector option is turned on. For more information, see Create a connection to an ODBC database.
Fields	Lists the fields in each selected table. If the table name check box is selected, all the fields in the table are automatically selected. If you click only the table name, fields are displayed but not selected. They can then be selected individually. You can also change the field name by clicking on the existing field name. The new name is then used as an alias for the name the field has in the database.
Filter data	Shows a field where you can enter filter criteria. Filter data from an ODBC database
Filter fields	Displays a field where you can filter on field names
Hide script/Preview script	Shows or hides the load script that is automatically generated when table and field selections are made.
Include LOAD statement	Adds a LOAD statement before the SELECT statement. Add a LOAD statement to an ODBC connection
Add data	Opens the Associations view of the Data manager. Allows you add more data sources, fix any errors in your data, and create table associations. This option is available only when you use Add data. Managing data associations
Insert script	Inserts the script displayed in the Data preview panel into the script editor. This option is available only when you use the Data load editor.

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