strange error message

Hi all,

I'm sure I found somewhere in the docs, that postgreSQL 7.0 accepts ANSI-SQL style join syntax, but when I try:

SELECT ta.a, tb.b FROM taba ta INNER JOIN tabb tb ON ta.c = tb.c;

I get the strange message:

ERROR: transformExpr: does not know how to transform node 501 (internal error)

Is my syntax wrong or is this a bug in the parser? I'm using 7.0.0

Gerhard