Re: Converting MySQL tinyint to PostgreSQL
От | Greg Stark |
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Тема | Re: Converting MySQL tinyint to PostgreSQL |
Дата | |
Msg-id | 87vf3fz7mr.fsf@stark.xeocode.com обсуждение исходный текст |
Ответ на | Re: Converting MySQL tinyint to PostgreSQL (Tom Lane <tgl@sss.pgh.pa.us>) |
Ответы |
Re: Converting MySQL tinyint to PostgreSQL
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Список | pgsql-general |
Tom Lane <tgl@sss.pgh.pa.us> writes: > Certainly the idea of not having to store a length word for CHAR(1) fields > is not going to inspire anyone to invest the effort involved ;-) That's a pretty big motivation though. Storage space efficiency is a huge factor in raw sequential scan speed. Personally I would settle for a fuller set of small fixed size datatypes. The "char" datatype is pretty much exactly what's needed except that it provides such a quirky interface. I'm not sure exactly how to clean it up but if it were more user-friendly (and had less of an "undocumented internal feature" character to it) I have a feeling a lot of people would be using for things like flags, state codes, etc. And it would reduce storage space significantly over having lots of text or even integer fields. -- greg
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