Thread: pgsql: Doc: add a section in Part II concerning RETURNING.

Doc: add a section in Part II concerning RETURNING.

There are assorted references to RETURNING in Part II, but nothing
that would qualify as an explanation of the feature, which seems
like an oversight considering how useful it is.  Add something.

Noted while looking for a place to point a cross-reference to ...

Branch
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REL9_4_STABLE

Details
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http://git.postgresql.org/pg/commitdiff/68d11e81f5f0aad1294098299c6491126bc8578c

Modified Files
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doc/src/sgml/dml.sgml     | 99 +++++++++++++++++++++++++++++++++++++++++++++++
doc/src/sgml/queries.sgml |  3 +-
2 files changed, 101 insertions(+), 1 deletion(-)