Category Archives: sql

SQL – Full Join Table of content The SQL Full Join SQL Full Join creates a new table by joining two tables as a whole. The joined table contains all records from both the tables and fills NULL values for missing matches on either side. In short, full join is a type of outer join […]

SQL – DELETE JOIN Table of content Simple deletion operation in SQL can be performed on a single record or multiple records of a table. And to delete records from multiple tables, the most straightforward approach would be to delete records from one table at a time. However, SQL makes it easier by allowing the […]

SQL – IS NULL Table of content Let”s assume a table with NULL values in some of its fields. These fields indicate that no values are present in them. SQL allows users to create new records or modify existing ones without specifying a value for a field. If no value is provided, the field is […]