Tom Lane wrote:
Hm, good point, so really we ought to have a separate casting path for
numeric types to char(n). However, this section still doesn't offer
any support for the OP's desire to auto-size the result; it says
that you get an error if the result doesn't fit in the declared
length:
iv) Otherwise, an exception condition is raised: data exception-
string data, right truncation.
I don't believe the size is being declared in the OP's (subject line)
example: SELECT CAST(123 AS char)
---------------------------(end of broadcast)---------------------------
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
