Hi,
I'm trying to use a composite type in a WHERE clause, as described here:
Just pasting in the examples I get:
CREATE TYPE complex AS (
r double precision,
i double precision
);
CREATE TYPE inventory_item AS (
name text,
supplier_id integer,
price numeric
);
CREATE TABLE on_hand (
item inventory_item,
count integer
);
INSERT INTO on_hand VALUES (ROW('fuzzy dice', 42, 1.99), 1000);
Now I want to query for that row, specifying the item in the WHERE clause. I can't use the ROW() notation, because all values need to be passed in as text. But I can't seem to get the text-based syntax to work:
select * from on_hand where item='("fuzzy dice",42,1.99)';
yeilds
ERROR: input of anonymous composite types is not implemented
I've tried various forms of quote escaping and dollar quoting as the docs suggest, but they all produce that same error:
select * from on_hand where item='("fuzzy dice",42,1.99)';
select * from on_hand where item='(\\""fuzzy dice\\"",42,1.99)';
select * from on_hand where item=$$("fuzzy dice",42,1.99)$$;
How do I express a composite type literal as text? Any workarounds? The text-based representation of values is a hard requirement in my project...
Thanks,
Eric
