PG 8.2
Linux
Hello -
I would like to update a two-dimensional array field in a table using pure SQL.
The field is defined as text[][]
My query produces data in the form
x, y, z
where x is the value of the key in the table I want to update
y is the value of the first element of the first subarray
z is the value of the second element of the first array
For example, part of the result of a query might be
x1 y1 z1
x1 y2 z2
x1 y3 z3
After updating the table, the row would look like this (quotes omitted
for clarity).
x1 {{y1,z1},{y2,z2},{y3,z3}}
In section 4.2.10, an examle is given using the ARRAY constructor, but
it explicitly says that the subquery must return a single column. I
don't know if this is a limitation of 8.2 or if there is a way around
this. The example in the manual is
SELECT ARRAY(SELECT oid FROM pg_proc WHERE proname LIKE 'bytea%');
Any assistance would be greatly appreciated.
Thank you,
David
