Answers for "adding primary key constraint in sql"

add primary key to existing table sql

alter table Persion add primary key (persionId,Pname,PMID)

Posted by: Guest on February-08-2021

add primary key to database sql

CREATE TABLE Persons (
    ID int NOT NULL,
    LastName varchar(255) NOT NULL,
    FirstName varchar(255),
    Age int,
    PRIMARY KEY (ID)
);

Posted by: Guest on May-04-2021

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