I have a column of type bytea which contains a vector encoded in a
string (elements are separated by spaces).
The problem is that it uses a lot of storage space.
I would like to convert this column to an ARRAY column with ALTER COLUMN
If I understand correctly, I have to specify a function to cast bytea to
double precision. Is it correct?
If this is correct, how to do that?
I use regexp_split_to_array to transform the bytea to a text but I
can't figure out how to convert it to double precision.
I'm using postgres 8.4.
Thanks in advance,
pgsql-novice by date
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