<t>If the field is already a string, this will work<br/>
<br/>
SELECT RIGHT('000'+ISNULL(field,''),3)<br/>
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```<br/>
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If you want nulls to show as '000'<br/>
<br/>
It might be an integer -- then you would want <br/>
<br/>
```<br/>
SELECT RIGHT('000'+CAST(field AS VARCHAR(3)),3)<br/>
<br/>
```<br/>
<br/>
<br/>
As required by the question this answer only works if the length <= 3, if you want something larger you need to change the string constant and the two integer constants to the width needed. eg `'0000' and VARCHAR(4)),4`</t>
