问题
Trying to insert a value into a varchar data field with the Superscript number of 4 (power of 4) at the end.
I'm able to insert/update values using superscript 2 and 3 (ie squared and cubed), but I can't get the power of 4 to enter correctly into a varchar field?
It does work if I switch the field to a nvarchar, but I'm trying to avoid that.
This works for squared or to the power of 2
update mytable
set myfield = 'test'+NCHAR(0xb2)
However, trying to get this to work using a 4 at the end...
update mytable
set myfield = 'test'+NCHAR(0x2074)
It just updates it a numeric 4 and not superscript 4. Is this because the VarChar datatype recognizes squared and cubed, but not any other ones?
回答1:
Superscripts beyond 3 are only available as Unicode characters, so you need to use an NVARCHAR instead of a VARCHAR for your data field, unfortunately.
Please see the ASCII table for allowable characters without using NVARCHAR - You'll only see superscripts for 2 and 3.
来源：https://stackoverflow.com/questions/13884018/inserting-superscript-numbers-in-ms-sql