pgsql: Disallow generated columns in COPY WHERE clause - Mailing list pgsql-committers

Disallow generated columns in COPY WHERE clause

Stored generated columns are not yet computed when the filtering
happens, so we need to prohibit them to avoid incorrect behavior.

Co-authored-by: jian he <jian.universality@gmail.com>
Reviewed-by: Kirill Reshke <reshkekirill@gmail.com>
Reviewed-by: Masahiko Sawada <sawada.mshk@gmail.com>
Discussion:
https://www.postgresql.org/message-id/flat/CACJufxHb8YPQ095R_pYDr77W9XKNaXg5Rzy-WP525mkq+hRM3g@mail.gmail.com

Branch
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REL_13_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/3717849e622d6d38be8f021cf230903d70926d5a

Modified Files
--------------
src/backend/commands/copy.c             | 37 +++++++++++++++++++++++++++++++++
src/test/regress/expected/generated.out |  6 ++++++
src/test/regress/sql/generated.sql      |  4 ++++
3 files changed, 47 insertions(+)