sql server - Set a existing column of MS SQL table as NOT NULL - Stack Overflow

sql server - Set a existing column of MS SQL table as NOT NULL - Stack Overflow

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日期:2025-05-04
How to Set a existing column of MS SQL table as NOT NULL? ... ALTER TABLE tablename ALTER COLUMN columnname datatype NOT NULL You will obviously have to make sure that the column does not contain any NULL values before doing this....看更多