postgreSQL COALESCE

Introduction

Coalesce returns the first none null argument from a set of arguments. Only the first non null argument is return, all subsequent arguments are ignored. The function will evaluate to null if all arguments are null.

Examples

Single non null argument

PGSQL> SELECT COALESCE(NULL, NULL, 'HELLO WORLD');
coalesce
--------
'HELLO WORLD'

Conclusion

In this page (written and validated by A. Gawali) you learned about postgreSQL COALESCE . What's Next? If you are interested in completing postgreSQL tutorial, your next topic will be learning about: postgreSQL Multiple non null arguments.

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