Hi all, Thank you for reading this mail.
I am trying to do the following: Extract the first half of _aaa and put it in column _bbb Here is the table, named: _table: Varchar[10] | Double Precision _aaa _bbb _________________________________ 1234567890 I used two functions to do it: substring() and to_number(). The SQL is like this: UPDATE _table SET _bbb = to_number(substring(_aaa from 1 for 5), '99999'); The machine fails me and said ERROR: invalid input syntac for type numeric: " " I guess the machine can not treat TEXT as CHAR[5]. I tries to CAST TEXT as CHAR[5]. It also doesnt allow me to do so. Can anyone give me some hints on this? regards, Daniel ---------------------------(end of broadcast)--------------------------- TIP 6: Have you searched our list archives? http://archives.postgresql.org