pgsql-server/src backend/access/common/tupdesc ...

CVSROOT:    /cvsroot
Module name:    pgsql-server
Changes by:    tgl@postgresql.org    02/09/28 16:00:19

Modified files:
    src/backend/access/common: tupdesc.c
    src/backend/commands: tablecmds.c
    src/backend/executor: execTuples.c nodeAgg.c
    src/backend/parser: parse_target.c
    src/test/regress/expected: alter_table.out

Log message:
    Make the world at least somewhat safe for zero-column tables, and
    remove the special case in ALTER DROP COLUMN to prohibit dropping a
    table's last column.