corresponding to the argument that PG accepts.
- Added support for reflecting the INTERVAL YEAR TO MONTH
and INTERVAL DAY TO SECOND syntaxes of the INTERVAL
type. [ticket:460]
on all new connections, which allows all String/Text/etc.
types to skip the need to post-process bytestrings into
unicode (an expensive step due to its volume). Other
dialects which return unicode natively (pg8000, zxjdbc)
also skip unicode post-processing.
- String/Text/Unicode types now skip the unicode() check
on each result column value if the dialect has
detected the DBAPI as returning Python unicode objects
natively. This check is issued on first connect
using "SELECT CAST 'some text' AS VARCHAR(10)" or
equivalent, then checking if the returned object
is a Python unicode. This allows vast performance
increases for native-unicode DBAPIs, including
pysqlite/sqlite3, psycopg2, and pg8000.
construct and extends the generic Enum type. Automatically
associates itself with tables and their parent metadata
to issue the appropriate CREATE TYPE/DROP TYPE
commands as needed, supports unicode labels, supports
reflection. [ticket:1511]
- MySQL ENUM now subclasses the new generic Enum type, and also handles
unicode values implicitly, if the given labelnames are unicode
objects.
- Added a new Enum generic type, currently supported on
Postgresql and MySQL. Enum is a schema-aware object
to support databases which require specific DDL in
order to use enum or equivalent; in the case of PG
it handles the details of `CREATE TYPE`, and on
other databases without native enum support can
support generation of CHECK constraints.
[ticket:1109] [ticket:1511]
- types documentation updates
- some cleanup on schema/expression docs
will allow the "not null constraint" error to raise,
not an attempt to execute a nonexistent "col_id_seq"
sequence. [ticket:1516]
- autoincrement SELECT statements, i.e. those which
select from a procedure that modifies rows, now work
with server-side cursor mode (the named cursor isn't
used for such statements.)
Mike Bayer