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61. ALTER TABLE for Adding Constraint in Column SQL (Hindi)

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Text Comments (6)
Suchitra Kotal (2 months ago)
It's not working ,I code like ALTER TABLE PERSONS ADD CONSTRAINT PRIMARY KEY(ID); Not working showing error
R K WEB Guru (3 months ago)
sir, I have added primary key in one column then I dropped that key but that key is still showing as primary key in the database.
Anas Usmani (6 months ago)
sir, I have one question add to one primary key in one table? And no please reply to my question ...
Anas Usmani (6 months ago)
thanks ....
Geeky Shows (6 months ago)
One Primary key for One Table
Saba Fathima (1 year ago)
can this query be used in oracle tooo ???

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