Q: ecpg and UPDATE/DELETE ... RETURNING ... for multiple returned rows

Hello experts,
I try to do an update together with a RETURNING clause but without success (postgresql 9.1 on CentOS 6.2),
the returned data can be multiple rows (not only one row expected like in src/interfaces/ecpg/test/sql/insupd.pgc):

1:
EXEC SQL DECLARE cur CURSOR FOR UPDATE t set a=0 where a=3 RETURNING b;
This fails (ecpg fails) with: ERROR: syntax error at or near "t"

2:
char *stmt = "UPDATE t set a=0 where a=3 RETURNING b"
EXEC SQL PREPARE stmt1 FROM :stmt;
EXEC SQL DECLARE cur CURSOR FOR stmt1;
This fails (sql fails in the server) with: syntax error at or near "UPDATE" at character 24

What is the proper way to do that in pgc or is this not possible?

Kind regards,
Michael

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