Same code with version for MySQL:
else if ( MATCH(key, "subject") ) {
_append_join(value->table, _subjectfield);
if (MATCH(db_params.driver, "postgresql")) {
_append_sort(value->order, "UPPER(COALESCE(sortfield, ''))
COLLATE\"C\"", reverse);
} else if (MATCH(db_params.driver, "mysql")) {
_append_sort(value->order, "UPPER(COALESCE(sortfield, '')) COLLATE
latin1_general_ci", reverse);
} else {
_append_sort(value->order, "UPPER(COALESCE(sortfield, ''))",
reverse);
}
(*idx)++;
}
Понедельник, 5 августа 2013, 19:22 +04:00 от ". ." <[email protected]>:
>IMAP sort requires input string collation according to the i;unicode-casemap,
>which describes string conversion to "titlecased
canonicalized UTF-8".
>Conversion consists of sequential conversion of string's unicode codepoints to
>"titlecase property" (which is normally the same as the
uppercase property according to RFC).
>This conversion shouldn't be locale-dependant, so I came up with this fix
>(works with PostgreSQL, hasn't been tested with other dbs):
>
> else if ( MATCH(key, "subject") ) {
> _append_join(value->table, "subjectfield");
> _append_sort(value->order, "UPPER(COALESCE(sortfield, ''))
>COLLATE\"C\"", reverse);
> (*idx)++;
> }
>
>COLLATE "C" is necessary because of locale issues (database could be created
>with different locales, and PostgreSQL's sorting depends on the initial
>locale).
>
>It works fine except that null strings won't sort correctly in reversed order
>(they mess with empty strings).
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>
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