Azure Table Connector

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Overview

Etlworks Azure Table connector allows the fastest and easiest way to connect to Azure Table storage data. The connector works just like any other database connector.

Etlworks partnered with CData to provide access to Azure Table storage using industry-standard JDBC protocol. Read about CData Azure Table JDBC connector.

When to use Azure Table connector

Use this connector to create Flows that extract data and load data into Azure Table.

Prerequisites

Enable the Azure Table connector for your Etlworks account. Contact support@etlworks.com to enable the connector.

Create a Connection

You can create a Connection in just two steps, and they are the following:

Step 1. In the Connections window, click +, and type in azure table.

Step 2. Enter the Connection parameters:

• Account: enter the storage account name. 
• Access Key: enter the access key for the account.

Read about Authentication with an Access key.

Use Other Parameters to specify the Connection string options. Read about available Connection string options.

Work with Azure Table

Azure Table Data Models

Azure tables are highly scalable NoSQL cloud databases that are very different from a regular database.

Read about the Azure Table data model.

Stored procedures

Stored procedures are available to complement the data available from the Data Model. It may be necessary to update data available from a view using a stored procedure because the data does not provide for direct, table-like, two-way updates. In these situations, the data retrieval is done using the appropriate view or table, while the update is done by calling a stored procedure. Stored procedures take a list of parameters and return a dataset that contains the collection of tuples that constitute the response.

Read about available stored procedures in the data model.  

To call stored procure from the SQL Flow or Before/After SQL, use EXEC sp_name params=value.

Example:

EXECUTE my_proc @second = 2, @first = 1, @third = 3;

SQL Compliance

The connector supports several operations on data, including querying, deleting, modifying, and inserting.

Read about SQL Compliance.

Extract data from Azure Table

Extracting data from Azure Table is similar to extracting data from the relational database.

Here are the steps on how you can extract data from Azure Table:

Step 1. Create Azure Table Connection which will be used as a source (FROM).

Step 2. Create a destination Connection, for example, a Connection to the relational database, and if needed, a Format (Format is not needed if the destination is a database or well-known API).

Step 3. Create a Flow where the source is a database and the destination is a Connection created in step 2, for example, a relational database.

Step 4. Add a new source-to-destination transformation.

Step 5. Select the Azure Table Connection created in step 1 as a source Connection and select the data object you are extracting data from.

Step 6. Select TO Connection, Format (if needed), and object (for example, database table) to load data into.

Step 7. Click MAPPING and optionally enter Source query (you don't need a query if you are extracting data from the Azure Table data object unconditionally).

Step 8. Optionally define the per-field Mapping.

Step 9. Add more transformations if needed.

Load data in Azure Table

Loading data in Azure Table is similar to loading data into a relational database.

Here are the steps on how you can load data in Azure Table:

Step 1. Create a source Connection and a Format (if needed).

Step 2. Create a destination Azure Table Connection.

Step 3. Create a Flow where the destination is a database.

Step 4. Add new source-to-destination transformation.

Step 5. Select FROM and TO Connections and objects (also a FROM Format if needed).

Step 6. Optionally define the per-field Mapping.

Step 7. Add more transformations if needed.

Browse data in Azure Table

You must have an Azure Table Connection to browse objects and run SQL queries.

Use the Etlworks Explorer to browse data and metadata in Azure Table as well as execute DML and SELECT queries against the Azure Table Connection.