pgsql: doc: mention of postpostgres_fdw INSERT ON CONFLICT limitation

doc: mention of postpostgres_fdw INSERT ON CONFLICT limitation

Reported-by: Fujii Masao

Discussion: /messages/by-id/47801526-d017-4c89-9f52-c02c449a139b@oss.nttdata.com

Author: Fujii Masao

Backpatch-through: master

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/e28a2719beeab1e3decfbaa81ebe73335e6282b1

Modified Files
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doc/src/sgml/postgres-fdw.sgml | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)