[GENERAL] Numeric type in PL/pgSQL trigger: overflow problem

[Robert]

Hi,

 following function doesn't work with numeric type, when I change type
of 'total_no_vat' to anything else incl. float it works OK. What am I
doing wrong? Thanks for your help.

- Robert

CREATE TABLE deb_invoice_line_table (
                qty             NUMERIC(13,2),
                unit_price      NUMERIC(13,2),
                total_no_vat    NUMERIC(13,2),
                -- ...
)

CREATE FUNCTION deb_invoice_line_complete() RETURNS OPAQUE AS 'BEGIN
        NEW.total_no_vat := 5.2;
        RETURN NEW;
END;' LANGUAGE 'plpgsql';

CREATE TRIGGER deb_invoice_line_trigger
        BEFORE INSERT OR UPDATE
        ON deb_invoice_line_table
        FOR EACH ROW EXECUTE PROCEDURE deb_invoice_line_complete();

INSERT INTO deb_invoice_line_table (qty,unit_price) VALUES (3,33);

ERROR:  overflow on numeric ABS(value) >= 10^0 for field with precision
0 scale 2

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