Hi,
I found follwing
email sent to you in internet.
I am interested in same
issue myself.
Did you finally found out
any more information about how to Update a column of a table by selecting value
from another table?
Hello,
If I understand the SQL references I have read, UPDATEs are allowed to
pull data from SELECT statements, something like
UPDATE table SET col1 = (SELECT val1 FROM table WHERE id = 34),
SET col2 = (SELECT val2 FROM table WHERE id = 34)
WHERE id = 35;
However, the PostgreSQL parser chokes on the 'SELECT'. The
documentation says
UPDATE table SET column = _expression_ [, ...]
[ FROM fromlist ]
[ WHERE condition ]
_expression_ = A valid _expression_ or value to assign to column.
I don't know exactly how to interpret `valid _expression_'.
--
Eric Marsden
emarsden @ mail.dotcom.fr
It's elephants all the way down
If I understand the SQL references I have read, UPDATEs are allowed to
pull data from SELECT statements, something like
UPDATE table SET col1 = (SELECT val1 FROM table WHERE id = 34),
SET col2 = (SELECT val2 FROM table WHERE id = 34)
WHERE id = 35;
However, the PostgreSQL parser chokes on the 'SELECT'. The
documentation says
UPDATE table SET column = _expression_ [, ...]
[ FROM fromlist ]
[ WHERE condition ]
_expression_ = A valid _expression_ or value to assign to column.
I don't know exactly how to interpret `valid _expression_'.
--
Eric Marsden
emarsden @ mail.dotcom.fr
It's elephants all the way down
