On 2017/05/10 6:51, Thomas Munro wrote:
> No such problem exists for partition hierarchies since the tables all
> appear as the same type to user code (though conversions may be
> happening for technical reasons).
To clarify a bit, there may exist differences in the ordering of columns,
either between the parent and its partitions or between different
partitions. For example, while parent's rowtype is (a int, b char, c
float), a partition's may be (b char, a int, c float), and yet another
partition may have (c float, a int, b char). If some user code happens to
depend on the ordering of columns, selecting from the parent and selecting
from a partition directly may return the same result but in different formats.
Thanks,
Amit
