Re: [INTERFACES] JDBC and character sets
От | David Warnock |
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Тема | Re: [INTERFACES] JDBC and character sets |
Дата | |
Msg-id | 376F9583.BFB85129@sundayta.co.uk обсуждение исходный текст |
Ответ на | Re: [INTERFACES] JDBC and character sets (Tatsuo Ishii <t-ishii@sra.co.jp>) |
Ответы |
Re: [INTERFACES] JDBC and character sets
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Список | pgsql-interfaces |
Tatsuo, Many thanks for your reply. I think I saw from the list of developers that you wrote a lot of the multiu-byte code. Is that correct? If so my grateful thanks. Are there any limitations or gotchas about using unicode everywhere? Specifically 1. Column length. Is this measured in unicode characters or do I need to increase the length of Varchars? ie is a varchar(10) certain to hold 10 unicode characters? 2. Indexing. What sort order will I get from an index or an order by for unicode characters. Can this be customised. Generally I try to do any really important sorting in Java where I can use the correct sort order for the locale. 3. Upper/lowercase. I have been using separate columns for uppercase versions of names etc again so that the case changes can be done by the client which will know the correct rules for the locale where the data is entered. What do upper/lower case functions in Postgresql do with unicode? 4. Are there any limitations on what I use to write triggers? Can all the different ways work reliably with unicode? Many many thanks. Dave -- David Warnock Sundayta Ltd
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