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You can use this query, to set the specific row on a specific column to null this way: Update myTable set MyColumn = NULL where Field = Condition. Here, the above code will set the specific cell to null as per the inner question (i.e. To clear the value from a cell and make it NULL).
To remove a NOT NULL constraint for a column in SQL Server, you use the ALTER TABLE .... ALTER COLUMN command and restate the column definition.
Code Inspection: Insert NULL into NOT NULL columnYou cannot insert NULL values in col1 and col2 because they are defined as NOT NULL. If you run the script as is, you will receive an error. To fix this code, replace NULL in the VALUES part with some values (for example, 42 and 'bird' ).
ALTER TABLE myTable ALTER COLUMN myColumn {DataType} NULL
where {DataType} is the current data type of that column (For example int or varchar(10))
Sure you can.
ALTER TABLE myTable ALTER COLUMN myColumn int NULL
Just substitute int for whatever datatype your column is.
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