The NULL values are substituted with the user-defined value during the expression evaluation process using the NVL(), COALESCE(), and ISNULL() functions. The COALESCE function evaluates
Tag: NVL and COALESCE() and ISNULL functions
Apache Hive Conditional Functions
The conditional functions available in the Apache Hive are as follows. The most of them are also available in Apache Impala. The behavior of the
NVL vs NVL2 Functions in Apache Impala
Many of the functions that are present in Apache Hive and Impala are close to the functions of conventional frameworks such as Oracle SQL*Plus and
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 and SQL 