Re: Toast, Text, blob bytea Huh?
От | Bruce Momjian |
---|---|
Тема | Re: Toast, Text, blob bytea Huh? |
Дата | |
Msg-id | 200109101522.f8AFMqI26298@candle.pha.pa.us обсуждение исходный текст |
Ответ на | Re: Toast, Text, blob bytea Huh? (ryan_rs@c4.com (Ryan)) |
Список | pgsql-hackers |
> joseph.conway@home.com ("Joe Conway") wrote in message news:<02a101c12c0e$37856d60$48d210ac@jecw2k1>... > ... snip > > BYTEA is very similar to TEXT, except that it is intended for binary data. I > > recently posted a PHP function which escapes binary in order to allow > > inserting it into a bytea column (on the pgsql-general list). At a minimum > > there are 4 characters which must be escaped. They are ACSII 0, 10, 39, and > > 92. They must reach PostgreSQL looking like \\000, \\012, \\047, and \\134 > > respectively (actually 39 could be \' and 92 could be \\\\, but it is > > simpler to be consistent). > ... snip > > Is it actually necessary to escape \012 (linefeed) in a query? My > brief testing using psql or python pygresql seemed to work ok with > only \000, \', and \\ escaped. Gosh, maybe all my data is corrupted > (!!) The linefeed escape was reported by a PHP users and perhaps there is an issue with PHP only. Not sure. -- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610) 853-3000+ If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup. | Drexel Hill, Pennsylvania19026
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