Thread: pgsql: Improve error message for replication of generated columns.

Improve error message for replication of generated columns.

Currently, logical replication produces a generic error message when
targeting a subscriber-side table column that is either missing or
generated. The error message can be misleading for generated columns.

This patch introduces a specific error message to clarify the issue when
generated columns are involved.

Author: Shubham Khanna
Reviewed-by: Peter Smith, Vignesh C, Amit Kapila
Discussion: https://postgr.es/m/CAHv8RjJBvYtqU7OAofBizOmQOK2Q8h+w9v2_cQWxT_gO7er3Aw@mail.gmail.com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/8fcd80258bcf43dab93d877a5de0ce3f4d2bd471

Modified Files
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src/backend/replication/logical/relation.c | 91 ++++++++++++++++++++----------
src/test/subscription/t/011_generated.pl   | 42 ++++++++++++++
2 files changed, 103 insertions(+), 30 deletions(-)