In the current release, does
not provide all of the DatabaseMetaData functionality. The following
JDBC requests result in empty result sets, in the format required by the JDBC
API:
- getColumnPrivileges
- getTablePrivileges
does
not implement privileges, and thus has no information to provide for these
calls.
getBestRowIdentifier looks for identifiers in this order:
- a primary key on the table
- a unique constraint or unique index on the table
- all the columns in the table
Because of this last choice, it will always find a set of columns
that identify a row. However, if there are duplicate rows in the table, use
of all columns might not necessarily identify a unique row in the table.