I think you meant "ALL_IND_COLUMNS" for indexes
On Sep 2, 2014, at 11:13 AM, Ivan Smirnov <[email protected]> wrote: > Index query: > > SELECT column_name, data_type, char_length, data_precision, data_scale, > nullable, data_default > FROM ALL_TAB_COLUMNS > WHERE table_name = :table_name AND owner = :owner > ORDER BY column_id > > returns > > INDEX_NAME COLUMN_NAME UNIQUENESS > 1 I_SNAP$_FOO M_ROW$$ UNIQUE > > Column query: > > SELECT column_name, data_type, char_length, data_precision, data_scale, > nullable, data_default > FROM ALL_TAB_COLUMNS > WHERE table_name = 'FOO' > AND owner = 'BAR' > ORDER BY column_id > > returns > > COLUMN_NAME DATA_TYPE CHAR_LENGTH DATA_PRECISION DATA_SCALE NULLABLE > DATA_DEFAULT > 1 A VARCHAR2 32 N > <Long> > 2 B FLOAT 0 126 N > <Long> > > However, looking at Oracle docs here: > http://docs.oracle.com/database/121/REFRN/refrn20277.htm#REFRN20277 -- it > seems like all hidden columns are specifically filtered out of > ALL_TAB_COLUMNS view. > > Instead, one could use ALL_TAB_COLS which seems to work and reveals the > M_ROW$$: > > SELECT column_name, data_type, char_length, data_precision, data_scale, > nullable, data_default > FROM ALL_TAB_COLS > WHERE table_name = 'FOO' > AND owner = 'BAR' > ORDER BY column_id > > which returns > > COLUMN_NAME DATA_TYPE CHAR_LENGTH DATA_PRECISION DATA_SCALE NULLABLE > DATA_DEFAULT > 1 A VARCHAR2 32 N > <Long> > 2 B FLOAT 0 126 N > <Long> > 3 M_ROW$$ VARCHAR2 18 Y > <Long> > > > On Tuesday, 2 September 2014 15:55:03 UTC+1, Michael Bayer wrote: > it means that the query we do to reflect the columns in the table isn't > coming up with this one. > > > A possible workaround now is to just add this column explicitly: > > t = Table('mytable', m, Column('m_row$$', integer), autoload=True) > > > > On Sep 2, 2014, at 10:26 AM, Ivan Smirnov <[email protected]> wrote: > >> So, if I understand correctly, in this example m_row$$ is a hidden column >> automatically generated when a materialized view is created with rowid. It's >> still accessible though, i.e. you can still select from it explicitly. >> >> On Monday, 1 September 2014 18:46:39 UTC+1, Ivan Smirnov wrote: >> py27/lib/python2.7/site-packages/sqlalchemy/engine/reflection.pyc in >> reflecttable(self, table, include_columns, exclude_columns) >> 591 cols_by_orig_name[c] if c in cols_by_orig_name >> 592 else table.c[c] >> --> 593 for c in columns >> 594 ], >> 595 **dict(unique=unique)) >> >> py27/lib/python2.7/site-packages/sqlalchemy/util/_collections.pyc in >> __getitem__(self, key) >> 155 >> 156 def __getitem__(self, key): >> --> 157 return self._data[key] >> 158 >> 159 def __delitem__(self, key): >> >> KeyError: u'm_row$$' >> > py27/lib/python2.7/site-packages/sqlalchemy/util/_collections.py(157)__getitem__() >> 156 def __getitem__(self, key): >> --> 157 return self._data[key] >> 158 >> >> >> If you have an index containing a column with a non-numeric character (like >> 'm_row$$'), reflection would fail as in the example above, since table.c >> would not contain it. >> >> Is there any way around it? >> >> P.S. It seems to be related to this thread from 4 years ago (MS SQL): >> https://groups.google.com/forum/#!searchin/sqlalchemy/keyerror/sqlalchemy/BcANLqW1D04/sRPMYpDLO8oJ >> >> -- >> You received this message because you are subscribed to the Google Groups >> "sqlalchemy" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To post to this group, send email to [email protected]. >> Visit this group at http://groups.google.com/group/sqlalchemy. >> For more options, visit https://groups.google.com/d/optout. > > > -- > You received this message because you are subscribed to the Google Groups > "sqlalchemy" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/sqlalchemy. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/sqlalchemy. For more options, visit https://groups.google.com/d/optout.
