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Is there any "convenient" way to generate (on request) a unique value
for a TEXT column? I have a situation in which I want users of my
front-end program to be able to manually enter values for this column,
but if they leave it blank (in the front-end), to have the database
automatically fill in a unique value. I would like to restrict the
unique values to (for example) digits and uppercase letters (this is
flexible, but the uniqueness of the values should be visually
discernible, and all characters should be printable).
I know how to do this with a numeric column (I can just SELECT MAX on
the column and add one, for example), but how can this be done with a
TEXT column?
Thank you!
- -----------------------------------------------------------
Frank D. Engel, Jr. <fde101@fjrhome.net>
$ ln -s /usr/share/kjvbible /usr/manual
$ true | cat /usr/manual | grep "John 3:16"
John 3:16 For God so loved the world, that he gave his only begotten
Son, that whosoever believeth in him should not perish, but have
everlasting life.
$
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