pgsql-server/src backend/commands/tablecmds.c ...

CVSROOT:    /cvsroot
Module name:    pgsql-server
Changes by:    tgl@svr1.postgresql.org    04/03/13 18:09:14

Modified files:
    src/backend/commands: tablecmds.c
    src/test/regress/expected: alter_table.out foreign_key.out
    src/test/regress/sql: foreign_key.sql

Log message:
    Generate a WARNING when the column types in a foreign key constraint are
    incompatible enough to prevent indexscanning the referenced table.  Also,
    improve the error message that pops out when we can't implement the FK at
    all for lack of a usable equality operator.  Fabien Coelho, with some review
    by Tom Lane.