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Delete and Truncate statement in BigQuery

Posted on 27th May 202229th May 2022 by RevisitClass

Delete statement in BigQuery Delete statement allows us to delete rows from a table. To perform the delete operation in

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GCP
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Create a Hive External table on Google Cloud Storage(GCS)

Posted on 23rd May 202213th June 2022 by RevisitClass

Google Cloud Storage (GCS) Google Cloud Storage is a secure and scalable storage option offered by Google. It allows us

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GCP, Hadoop
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Regexp_replace function in BigQuery with examples

Posted on 19th May 202213th June 2022 by RevisitClass

Regexp_replace function in BigQuery The Regexp_replace function is search the given regular expression pattern in the input string. Then it

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GCP
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Parsing Hive Create table query using Apache Hive library

Posted on 16th May 202213th June 2022 by RevisitClass

Apache Hive Apache Hive is an open source data warehousing solution build on top of Hadoop. It supports SQL-like query

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Hadoop
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How to rename a column in Hive?

Posted on 13th May 202213th May 2022 by RevisitClass

Alter table statement in Hive The Alter table statement is used to change the structure of the existing table in

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Hadoop
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How to add partition to existing table in BigQuery?

Posted on 11th May 202219th June 2022 by RevisitClass

Partitioned tables in BigQuery Partitioned table is a special table that is divided into segments called partitions. Those partitioned tables

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GCP
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How to use Qualify Row_number in BigQuery?

Posted on 9th May 202230th June 2022 by RevisitClass

ROW_NUMBER() function in BigQuery Row_number is a Numbering function which is a subset of Analytic function in BigQuery. In the

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GCP
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Trim function in Hive with examples

Posted on 6th May 20226th May 2022 by RevisitClass

Trim function in Hive Trim function removes the extra space from both ends of the string value. In other words,

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Hadoop
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How to add Primary key in the Create Table statement using Parser?

Posted on 4th May 202213th June 2022 by RevisitClass

Parser Parser is a program which understand the grammar of the sequence of words/sentences and produce the syntactical tree representation.

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Java, Oracle, Teradata
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How to execute a Select query on BigQuery using Java?

Posted on 28th April 202221st June 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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