Redshift

Redshift NULL Handling Functions-Usage and Examples

A NULL value in a relational database is a special marker used in SQL to indicate that a data value does not exist in the database. In other words, it is just a placeholder to denote values that are missing or that we do not know. Almost all relational databases support functions to handle nulls. In this article, we will check Redshift NULL handling functions, usage and some examples Redshift NULL Handling Functions A NULL functions are used to handle NULL values that you may receive as a part of the data. For example, you can use…

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February 23, 2021
General

What is isnull Alternative in Teradata SQL?

The relational databases such as SQL server supports isnull function. It returns the alternate value if input argument or expression is null. But, Teradata does not support isnull function. Instead, you have to use an alternate method to replace null values. In this article, we will check what is isnull alternative in Teradata SQL with some examples. isnull Function Alternative in Teradata SQL As mentioned earlier, Teradata does not support isnull function. There are many alternative methods that you can use as an alternative to isnull function. The SQL Server ISNULL() function…

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September 9, 2020