pgsql: Add jsonb_insert

Add jsonb_insert

It inserts a new value into an jsonb array at arbitrary position or
a new key to jsonb object.

Author: Dmitry Dolgov
Reviewers: Petr Jelinek, Vitaly Burovoy, Andrew Dunstan

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/0b62fd036e1ac48a8432bb9664b21e1f036c1b08

Modified Files
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doc/src/sgml/func.sgml               |  45 ++++++++++--
src/backend/catalog/system_views.sql |   8 +++
src/backend/utils/adt/jsonfuncs.c    | 134 ++++++++++++++++++++++++++++-------
src/include/catalog/catversion.h     |   2 +-
src/include/catalog/pg_proc.h        |   2 +
src/include/utils/jsonb.h            |   3 +
src/test/regress/expected/jsonb.out  | 129 +++++++++++++++++++++++++++++++++
src/test/regress/sql/jsonb.sql       |  30 ++++++++
8 files changed, 324 insertions(+), 29 deletions(-)