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Home > Archive > Microsoft SQL Server forum > September 2005 > How to convert from CHAR to Numeric in the table
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How to convert from CHAR to Numeric in the table
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I have imported some data to sql2k from my old system. Somehow, it imported
invoice amount to char type.
I just created another column called invamt2 type NUMERIC so I can copy or
convert content of invamt which is type CHAR. There are about 50,000
records.
How can I convert/cast from char type to numeric type ?
Thanks
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| Simon Hayes 2005-09-29, 11:23 am |
| If the only problem is the column data type, and you know the data
itself is already numeric, then you can just alter the column data type
directly:
alter table SomeTable alter column invamt numeric(10,5)
See "CAST and CONVERT" in Books Online for general information about
data type conversion.
Simon
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| Tibor Karaszi 2005-09-29, 11:23 am |
| If you don't have any dirty data, you can do:
UPDATE tblname
SET invamt2 = CAST(invamt AS numeric(..., ...))
If you do have dirty data, you will get a datatype conversion error from above and need to clean
your data first.
--
Tibor Karaszi, SQL Server MVP
http://www.karaszi.com/sqlserver/default.asp
http://www. solidqualitylearning
.com/
Blog: http:// solidqualitylearning
.com/blogs/tibor/
"Mac" <mac@hotmail.com> wrote in message news:TSS_e.10727$WT3.7999@trnddc03...
>
> I have imported some data to sql2k from my old system. Somehow, it imported invoice amount to
> char type.
>
> I just created another column called invamt2 type NUMERIC so I can copy or convert content of
> invamt which is type CHAR. There are about 50,000 records.
>
> How can I convert/cast from char type to numeric type ?
>
> Thanks
>
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