SQL-92 and SQL-89 joins are supported by most RDBMSs, including Apache Impala. This article will explain how the syntax is written in both ways and
Category: Oracle SQL*Plus
Apache Hive Aggregate Functions – Part-2
This is continuation part of “Apache Hive Aggregate Functions” Function: VARIANCE & VAR_POP Returns the population variance of the total number of records present in
SQL Assignment-1
For beginners to intermediate levels, this is a quick test/assignment to check how familiar they are with SQL. Such types of exercises will certainly help
Joins in HiveQL
As we discussed earlier, HiveQL handles structured data only, much like SQL. This doesn’t mean that Hive just manages structured data, it also processes and
Creating a table and a view with the select statement.
In this article, you’ll learn how to create a view and table based on a select statement. -~ To create a viewCREATE VIEW Emp_View ASSELECT Ename,
An alternative to ISNULL() and NVL() functions in Hive
The NVL() function enables you to substitute null for a more relevant alternative in the query results. This function accepts two arguments. If the first
Big Data & SQL 