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How to execute a Select query on BigQuery using Java?

Posted on 28th April 202217th August 2022 by RevisitClass

BigQuery BigQuery is a fully managed and serverless datawarehouse system. It is part of Google Cloud Platform. It can process

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GCP, Java
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How to send Spark dataframe values as HTML table to Email?

Posted on 27th March 20222nd September 2022 by RevisitClass

Spark dataframe Spark dataframe is a distributed collection of rows with the same schema. The schema defines the structure of

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Spark
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How to write a Spark dataframe to Hive table in Pyspark?

Posted on 26th January 20226th December 2022 by RevisitClass

Apache spark to write a Hive Table Apache Spark provides an option to read from Hive table as well as

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Hadoop, Spark
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Instr function in Hive with examples

Posted on 11th December 202114th May 2022 by RevisitClass

Hive instr function Instr is a string function which returns the position of the first occurrence of substring in the

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Hadoop
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How to access a Hive table using Pyspark?

Posted on 15th November 20212nd September 2022 by RevisitClass

Pyspark Apache Spark is an in-memory data processing framework written in Scala language. It process the data 100 times faster

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Hadoop, Spark
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Left join in Oracle with examples

Posted on 15th November 202115th November 2021 by RevisitClass

LEFT JOIN in Oracle A Join statement is used to combine data or rows from two or more tables based

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Oracle
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How to create a database at specific location in Hive?

Posted on 7th November 202114th May 2022 by RevisitClass

Create database in Hive The database is an organised collection of tables.Hive has the default database with the name as

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Hadoop
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How to connect Hive using JDBC connection?

Posted on 31st October 202114th May 2022 by RevisitClass

Hive JDBC Hive allows the applications to connect to it using the JDBC driver. JDBC driver uses Thrift to communicate

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Hadoop
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How to copy Docker image from one machine to another?

Posted on 16th October 202116th October 2021 by RevisitClass

Docker image A Docker image is an executable package that includes everything needed to run a container: the code, a

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DevOps
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How to create a external table in Hive?

Posted on 12th September 202113th June 2022 by RevisitClass

External Table in Hive When we create the table in Hive, we can define the type of a table. As

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Hadoop
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