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Avoid retrieving dummy NULL columns in postgres_fdw.
This should provide some marginal overall savings, since it surely takes many more cycles for the remote server to deal with the NULL columns than it takes for postgres_fdw not to emit them. But really the reason is to keep the emitted queries from looking quite so silly ...
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- contrib/postgres_fdw/deparse.c 69 additions, 26 deletionscontrib/postgres_fdw/deparse.c
- contrib/postgres_fdw/expected/postgres_fdw.out 131 additions, 119 deletionscontrib/postgres_fdw/expected/postgres_fdw.out
- contrib/postgres_fdw/postgres_fdw.c 88 additions, 67 deletionscontrib/postgres_fdw/postgres_fdw.c
- contrib/postgres_fdw/postgres_fdw.h 10 additions, 5 deletionscontrib/postgres_fdw/postgres_fdw.h
- contrib/postgres_fdw/sql/postgres_fdw.sql 3 additions, 1 deletioncontrib/postgres_fdw/sql/postgres_fdw.sql
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