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Changing DataType
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Misty View Drop Down
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Points: 711 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Misty Quote  Post ReplyReply Direct Link To This Post Topic: Changing DataType
    Posted: 15 October 2004 at 3:25pm
I just realized that I made a big mistake with one of my fields. I had set it to nvarchar instead of int. There's already a lot of records in this database. I get an error message in SQL Server when I try to change the datatype. How do I get it to let me change the datatype from nvarchar to int without losing the data?
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michael View Drop Down
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Points: 4670 		Post Options Post Options   Thanks (0) Thanks(0)   Quote michael Quote  Post ReplyReply Direct Link To This Post Posted: 15 October 2004 at 5:21pm
You can only change that without an error if the table holds integer values. There will be a warning in EM nonethless cause EM does not verify the data. Generally use
ALTER TABLE MyTable ALTER COLUMN ColumnToChange int NOT NULL
to change the data type. values that are not int will be dropped thus as in that case it's NOT NULL you will get an error.
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