"Hiveis a data warehousing infrastructure based on Hadoop. Hive is designed to enable easy data summarization, ad-hoc querying and analysis of large volumes of data. It provides a simple query language called Hive QL, which is based on SQL and which enables users familiar with SQL to do...
Hive is...Hive is a SQL-like query language (HiveQL or H-SQL) with schema on read and generates map/reduce code from the query.It is developed by Facebook. It is designed to enable easy data summarization, ad-hoc querying, and analysis of large volumes of data....
Hive will wait until the job is complete before it shows the results from the query: AK 2 AL 2 AR 2 AZ 3 CA 7 CO 2 CT 2 ID 1 KS 1 ME 2 MI 1 MT 3 NC 1 NE 1 NM 1 NY 2 OR 5 PA 1 TN 1 TX 1 UT 4 VA 1 VT 2 WA 2 WY 3 Time taken: 8.753 seconds, Fetched: 25...
This tutorial will show how to use upgrade Hive from 1.2 (CDH 5.0) to 1.3 (CDH 5.3). There is no simple ways of upgrading the Hive other than doing it by a couple of manual steps. However, this attempt was not perfect, and I'll come back later to resolve the issue. In fact, we...
PySpark Cheat Sheet Starting with PySpark ? Check this PySpark Cheat Sheet to help you get started quickly. Read More Check my blog post list In this website I have shared my experience with SQL on “Hadoop” platform. I share posts about Apache Hive, Apache Spark, PySpark , Amazon EMR ...
In the hive service, there is a requirement to utilize various functions, one of which is the hive nvl function. This function can be applied as a keyword in a hive query to update null values in a table with a specific value. By using the nvl keyword, null values can be easily repla...