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    <p>As documentation, <a href="http://www.postgresql.org/docs/current/static/multibyte.html" rel="noreferrer">22.2. Character Set Support</a> says:</p> <blockquote> <p>An important restriction, however, is that each database's character set must be compatible with the database's LC_CTYPE (character classification) and LC_COLLATE (string sort order) locale settings. For C or POSIX locale, any character set is allowed, but for other locales there is only one character set that will work correctly. (On Windows, however, UTF-8 encoding can be used with <strong>any locale</strong>.)</p> </blockquote> <p>I see that probably you have PostgreSQL under Windows host (<code>English_United States.1252 locale</code>), so you can use whatever of these (<code>Posix</code> is as same as <code>C</code> and means "no locale"), read <a href="http://www.postgresql.org/docs/current/static/locale.html" rel="noreferrer">22.1. Locale Support</a>:</p> <blockquote> <p>Locale support refers to an application respecting cultural preferences regarding alphabets, sorting, number formatting, etc.</p> <p>If you want the system to behave as if it had no locale support, use the special locale C or POSIX.</p> </blockquote> <p><strong>EDIT:</strong></p> <p>Windows platform isn't POSIX compliant, so you should use <code>C</code> locale for that platform. I don't know why installer has POSIX option (I guess it's rather a bug):</p> <p><img src="https://i.stack.imgur.com/5bvZF.png" alt="enter image description here"></p> <p>To create new cluster without locale you can simply use <code>--no-locale</code> switch e.g.:</p> <pre>initdb --no-locale -E UTF-8 C:\pgdata</pre>
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    1. POLC_COLLATE and LC_CTYPE suport for utf-8 in postgreSQL
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    1. USGrzegorz Szpetkowski
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    1. COOwh thanks so much. now i understand.
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    2. COBut i got problem. i try to reinstal the postgresql, then in the beginning installation, i chose POSIX. after finish, i try to create new database, but i got Error "invalid locale name POSIX"
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    3. CO@Ahmad: Try to use `C` instead.
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