Обсуждение: I need to find all of the unique characters within a text field

How do I identify all of the unique characters within a text field?

Thanks,

Lance Campbell
Project Manager/Software Architect/DBA
Web Services at Public Affairs
217-333-0382

> How do I identify all of the unique characters within a text field?

select distinct regexp_split_to_table('hello world', E'');

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nathan wagner