Not Null Constraint in SQL Template
The Not Null Constraint in SQL template shows you how to assign a PRIMARY KEY constraint, specifying that the values of the constrained email must uniquely identify each row. Download and unzip the .zip file in a new folder. Inside the folder you will find a .sql file. Load it into MySQL Workbench. Some other related topics you might be interested are Primary Key Constraint in SQL, Unique Constraint in SQL and Default Constraint in SQL . You can now download the SQL template for free. Not Null Constraint in SQL is among the topics covered in detail in the 365 Data Science program.
Who is it for
This is an open-access SQL template that is going to be useful to Data Scientist, Data Analyst, Data Architect, Data Engineer, Business Analysts, and anyone who wants to upskill in relational databases.
How it can help you
By going through this SQL Primary Key Constraint template, you will learn how to perform a check and see if we have NaN (or null) values within a table. Here, we see how to do it in SQL using the NOT NULL constraint.
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