concat returns null - Mailing list pgsql-jdbc

From abyss
Subject concat returns null
Date
Msg-id 8f60d3bd0712180316r52dd88b9j4e092ee7b1a03d06@mail.gmail.com
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Responses Re: concat returns null
Re: concat returns null
List pgsql-jdbc
I don't know if it's bug or feature but
select 'test' || null as result
returns null,
so i need to case second parameter not to concat if it is null...

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