Обсуждение: [COMMITTERS] pgsql: extstats: change output functions to emit valid JSON

extstats: change output functions to emit valid JSON

Manipulating extended statistics is more convenient as JSON than the
current ad-hoc format, so let's change before it's too late.

Discussion: https://postgr.es/m/20170420193828.k3fliiock5hdnehn@alvherre.pgsql

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/93bbeec6a21b76612d77176a8054b41277135684

Modified Files
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doc/src/sgml/perform.sgml               | 11 +++++------
src/backend/statistics/dependencies.c   | 23 +++++++----------------
src/backend/statistics/mvdistinct.c     | 15 ++++++++++-----
src/test/regress/expected/stats_ext.out | 12 ++++++------
4 files changed, 28 insertions(+), 33 deletions(-)