Log Message:
-----------
Incorporate examples and doc patches from Mark Kirkwood and David Fetter.
Modified Files:
--------------
pgsql/doc/src/sgml:
plpgsql.sgml (r1.55 -> r1.56)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/plpgsql.sgml.diff?r1=1.55&r2=1.56)
pgsql/doc/src/sgml/ref:
alter_table.sgml (r1.76 -> r1.77)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/alter_table.sgml.diff?r1=1.76&r2=1.77)
create_opclass.sgml (r1.12 -> r1.13)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/create_opclass.sgml.diff?r1=1.12&r2=1.13)
---------------------------(end of broadcast)---------------------------
TIP 9: the planner will ignore your desire to choose an index scan if your
joining column's datatypes do not match
