Modify Data Type with ALTER Command

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Alice Paul

Modify Data Type with ALTER Command
1 Answer(s) a year and 5 months ago
Posted in : SQL

Is it possible to modify the Data type of a column which has at least one data in it?If it is possible,then what will happen to the data in the column?

Example. Table Name: Emp

EmpName | Salary

Smith | 10000

The above table is with 'Char' as datatype for the column 'EmpName' and 'INT' for column 'Salary'

ALTER TABLE Emp ALTER COLUMN EmpName INT;

Is it possible to modify the above table like this?If this is a valid query, then what will happen to the data 'Smith'?

View Answers

January 12, 2012 at 5:07 PM

Use the following query:

ALTER TABLE Emp MODIFY EmpName int(255);

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