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convert BYTE to CHAR

happy10319Jun 14 2012 — edited Jun 16 2012
Hi,
on 11g R2,

if a column1 is VARCHAR2(20 byte) and column2 is VARCHAR2(20 char) , which needs more disk space to be storaged (suppose we have just one row) ?

We are in non-unicode.

If I have MYTABLE (column1 VARCHAR2(20 byte)) how can I convert it to MYTABLE (column1 VARCHAR2(20 CHAR)) ?

Thank you.
This post has been answered by Pierre Forstmann on Jun 15 2012
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Locked on Jul 14 2012
Added on Jun 14 2012
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