Answers for ""unique key""

SQL
0

unique key

CREATE TABLE students  
(  
S_Id int NOT NULL,  
LastName varchar (255) NOT NULL,  
FirstName varchar (255),  
City varchar (255),  
UNIQUE (S_Id)  
)
Posted by: Guest on October-07-2020
0

unique key

ALTER TABLE students  
ADD UNIQUE (S_Id)
Posted by: Guest on October-07-2020

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