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COALESCE IN ORACLE SQL

This video is the 4th video in the series of 'working with null', this video explains the working of the coalesce function in oracle sql. Also the video explains the use of coalesce function in oracle sql queries by perfect simple and easy to understand examples. COALESCE returns the first non-null expr in the expression list. You must specify at least two expressions. If all occurrences of expr evaluate to null, then the function returns null. Oracle Database uses short-circuit evaluation. The database evaluates each expr value and determines whether it is NULL, rather than evaluating all of the expr values before determining whether any of them is NULL. If all occurrences of expr are numeric datatype or any non numeric datatype that can be implicitly converted to a numeric datatype, then Oracle Database determines the argument with the highest numeric precedence, implicitly converts the remaining arguments to that datatype, and returns that datatype. Subscribe to the channel :    / @kishanmashru   Other Playlists: Data Warehousing Concepts:    • Data Warehousing Concepts   Python and Database:    • Python | How to Install python packages   SQL and PL/SQL Interview Questions:    • SQL AND PL/SQL INTERVIEW QUESTIONS   SQL and PL/SQL concepts:    • SQL and PLSQL   Content and video created by : Kishan Mashru