prueba tecnica

db/02_CreateContract.sql

@@ -0,0 +1,48 @@
+DROP FUNCTION IF EXISTS public.create_contract (
+    VARCHAR(20),  -- p_contractor_id_number
+    VARCHAR(50),  -- p_contractor_name
+    VARCHAR(100), -- p_contractor_surname
+    TIMESTAMP,    -- p_contract_init_date
+    INTEGER       -- p_rate_id
+);
+
+
+CREATE OR REPLACE FUNCTION public.create_contract (
+    p_contractor_id_number VARCHAR(20),
+    p_contractor_name      VARCHAR(50),
+    p_contractor_surname   VARCHAR(100),
+    p_contract_init_date   TIMESTAMP,
+    p_rate_id              INTEGER
+)
+RETURNS INTEGER
+AS $$
+DECLARE
+    v_new_id INTEGER;
+BEGIN
+    PERFORM 1
+    FROM   public.rates
+    WHERE  id = p_rate_id;
+    IF NOT FOUND THEN
+        RAISE EXCEPTION
+            'No reate found with id %', p_rate_id;
+    END IF;
+
+    INSERT INTO public.contracts (
+        contractoridnumber,
+        contractorname,
+        contractorsurname,
+        contractinitdate,
+        rateid
+    )
+    VALUES (
+        p_contractor_id_number,
+        p_contractor_name,
+        p_contractor_surname,
+        p_contract_init_date,
+        p_rate_id
+    )
+    RETURNING id INTO v_new_id;
+
+    RETURN v_new_id;
+END;
+$$ LANGUAGE plpgsql VOLATILE;