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A field property in SQL Server is varchar, I want to change this field to int type

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A field property in SQL Server is varchar, I want to change this field to int type? This is a little annoyed, as a novice to face these problems really a bit difficult, this is also I found on Baidu, as the basis of the finishing bar, later encountered convenient to view. with SQL statement: ALTER TABLE [AA] alter column BB int eg:
This is my example. Successful execution can refresh the database (if not, disconnect the existing connection and connect again.) )

A field property in SQL Server is varchar, I want to change this field to int type

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