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Etsuro Fujita aa769f80ed postgres_fdw: Fix issues with generated columns in foreign tables. ... postgres_fdw imported generated columns from the remote tables as plain columns, and caused failures like "ERROR: cannot insert a non-DEFAULT value into column "foo"" when inserting into the foreign tables, as it tried to insert values into the generated columns. To fix, we do the following under the assumption that generated columns in a postgres_fdw foreign table are defined so that they represent generated columns in the underlying remote table: * Send DEFAULT for the generated columns to the foreign server on insert or update, not generated column values computed on the local server. * Add to postgresImportForeignSchema() an option "import_generated" to include column generated expressions in the definitions of foreign tables imported from a foreign server. The option is true by default. The assumption seems reasonable, because that would make a query of the postgres_fdw foreign table return values for the generated columns that are consistent with the generated expression. While here, fix another issue in postgresImportForeignSchema(): it tried to include column generated expressions as column default expressions in the foreign table definitions when the import_default option was enabled. Per bug #16631 from Daniel Cherniy. Back-patch to v12 where generated columns were added. Discussion: https://postgr.es/m/16631-e929fe9db0ffc7cf%40postgresql.org		4 years ago
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expected	postgres_fdw: Fix issues with generated columns in foreign tables.	4 years ago
sql	postgres_fdw: Fix issues with generated columns in foreign tables.	4 years ago
.gitignore	Add postgres_fdw contrib module.	13 years ago
Makefile	postgres_fdw: Add function to list cached connections to foreign servers.	5 years ago
connection.c	Allow TRUNCATE command to truncate foreign tables.	4 years ago
deparse.c	postgres_fdw: Fix issues with generated columns in foreign tables.	4 years ago
option.c	Avoid using ambiguous word "non-negative" in error messages.	4 years ago
postgres_fdw--1.0--1.1.sql	postgres_fdw: Add functions to discard cached connections.	4 years ago
postgres_fdw--1.0.sql	Add postgres_fdw contrib module.	13 years ago
postgres_fdw.c	postgres_fdw: Fix issues with generated columns in foreign tables.	4 years ago
postgres_fdw.control	postgres_fdw: Add function to list cached connections to foreign servers.	5 years ago
postgres_fdw.h	postgres_fdw: Fix issues with generated columns in foreign tables.	4 years ago
shippable.c	Replace remaining uses of "whitelist".	5 years ago