Here's a patch for tg_table_name and tg_table_schema for plpgsql, which
I would appreciate a quick review of just to make sure I haven't missed
something or done something silly. This will complete this exercise - I
have already committed analogous changes for plperl, plpython and pltcl.

cheers

andrew


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TIP 9: In versions below 8.0, the planner will ignore your desire to
choose an index scan if your joining column's datatypes do not
match