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Use of SQL NOT NULL
Example
CREATEÂ TABLEÂ People (
   ID int NOT NULL,
    LName varchar(255) NOT NULL,
   FName varchar(255) NOT NULL,
   Year int
);
Code has been added to clipboard!
CREATEÂ TABLEÂ People (
   ID int NOT NULL,
    LName varchar(255) NOT NULL,
   FName varchar(255) NOT NULL,
   Year int
);