Work with Tally Data in Apache Spark Using SQL

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Tally JDBC Driver

Rapidly create and deploy powerful Java applications that integrate with Tally.



Access and process Tally Data in Apache Spark using the CData JDBC Driver.

Apache Spark is a fast and general engine for large-scale data processing. When paired with the CData JDBC Driver for Tally, Spark can work with live Tally data. This article describes how to connect to and query Tally data from a Spark shell.

The CData JDBC Driver offers unmatched performance for interacting with live Tally data due to optimized data processing built into the driver. When you issue complex SQL queries to Tally, the driver pushes supported SQL operations, like filters and aggregations, directly to Tally and utilizes the embedded SQL engine to process unsupported operations (often SQL functions and JOIN operations) client-side. With built-in dynamic metadata querying, you can work with and analyze Tally data using native data types.

Install the CData JDBC Driver for Tally

Download the CData JDBC Driver for Tally installer, unzip the package, and run the JAR file to install the driver.

Start a Spark Shell and Connect to Tally Data

  1. Open a terminal and start the Spark shell with the CData JDBC Driver for Tally JAR file as the jars parameter: $ spark-shell --jars /CData/CData JDBC Driver for Tally/lib/cdata.jdbc.tally.jar
  2. With the shell running, you can connect to Tally with a JDBC URL and use the SQL Context load() function to read a table.

    Set the following connection properties to connect to Tally Instance:

    • Url: Set this to the URL for your Tally instance. For example: http://localhost:9000.

    Built-in Connection String Designer

    For assistance in constructing the JDBC URL, use the connection string designer built into the Tally JDBC Driver. Either double-click the JAR file or execute the jar file from the command-line.

    java -jar cdata.jdbc.tally.jar

    Fill in the connection properties and copy the connection string to the clipboard.

    Configure the connection to Tally, using the connection string generated above.

    scala> val tally_df = spark.sqlContext.read.format("jdbc").option("url", "jdbc:tally:Url='http://localhost:9000'").option("dbtable","Company").option("driver","cdata.jdbc.tally.TallyDriver").load()
  3. Once you connect and the data is loaded you will see the table schema displayed.
  4. Register the Tally data as a temporary table:

    scala> tally_df.registerTable("company")
  5. Perform custom SQL queries against the Data using commands like the one below:

    scala> tally_df.sqlContext.sql("SELECT Name, Address FROM Company WHERE CompanyNumber = 1000").collect.foreach(println)

    You will see the results displayed in the console, similar to the following:

Using the CData JDBC Driver for Tally in Apache Spark, you are able to perform fast and complex analytics on Tally data, combining the power and utility of Spark with your data. Download a free, 30 day trial of any of the 200+ CData JDBC Drivers and get started today.