PostgreSQL: How to pass and array to a function and using it in a query with the IN operator - sql

Question

I have a problem, I want to pass an array to a postgres function and use that array so returns values in a SELECT IN clause.
But It shows me this error:
An error occurred executing the SQL command :
SELECT
*
FROM
get_invtransferences_porders_fporders (300001300 , array [ 300093753 , 300094126 , 300093349 , 300093838 , 300094128 ] ...
ERROR: operator does not exist : integer = integer [ ]
Hint : No operator matches the name and type of arguments. You may need to add explicit type conversions .
Where : PL / pgSQL get_invtransferences_porders_fporders (numeric , integer []) function on line 8 FOR loop around rows of a SELECT
This is my function:
CREATE OR REPLACE FUNCTION public.get_invtransferences_porders_fporders(p_product_id numeric, P_INVTRANSFERENCES_IDS integer[])
RETURNS SETOF record
LANGUAGE plpgsql
AS
$body$
DECLARE
PORDER_PRODUCT RECORD;
COMPONENT RECORD;
COMPONENT2 RECORD;
COMPONENT3 RECORD;
BEGIN
FOR PORDER_PRODUCT IN (
SELECT
'porder' AS "operation_type"
,porders.id AS "porder_id"
,porders.user_id AS "porder_user_id"
,(SELECT name FROM users WHERE users.id = porders.user_id) AS "porder_user_name"
,porders.delivery_datetime AS "porder_delivery_datetime"
,porders_products.requested AS "product_requested"
,porders_products.produced AS "product_produced"
,products.code AS "product_code"
,products.NAME AS "product_name"
,(
SELECT products.name
FROM products
WHERE id = product_components.component_product_id
) AS "component_product_name"
,product_components.quantity AS "component_quantity"
,(
SELECT products.um_id
FROM products
WHERE id = product_components.component_product_id
) AS "component_um_id"
,(product_components.quantity / products.production_base) * porders_products.requested AS "total"
FROM porders
,porders_products
,products
,product_components
WHERE porders.id = porders_products.porder_id
AND porders_products.product_id = products.id
AND porders_products.product_id = product_components.product_id
AND porders.id IN (
SELECT rawm_audit_porders.porder_id
FROM rawm_audit_invtransferences
,rawm_audits
,rawm_audit_porders
WHERE rawm_audit_invtransferences.rawm_audits_id = rawm_audits.id
AND rawm_audit_porders.rawm_audits_id = rawm_audits.id
AND rawm_audit_invtransferences.invtransference_id IN
(
SELECT
invtransferences.id
FROM invtransferences
,invtransferences_products
,products
WHERE invtransferences.id = invtransferences_products.invtransference_id
AND products.id = invtransferences_products.product_id
AND invtransferences.id IN (P_INVTRANSFERENCES_IDS)
)
)
AND product_components.component_product_id = p_product_id
) LOOP
IF(PORDER_PRODUCT.porder_id IS NOT NULL)THEN
RETURN NEXT PORDER_PRODUCT;
END IF;
END LOOP;
RETURN;
END;
$body$
VOLATILE
COST 100
ROWS 1000
I think the error it here `invtransferences.id IN (P_INVTRANSFERENCES_IDS)
This is the select that calls the function:
SELECT
*
FROM
get_invtransferences_porders_fporders(300001300 , array[300093753, 300094126, 300093349, 300093838, 300094128] )
AS
(
"operation_type" varchar,
"porder_id" numeric,
"porder_user_id" numeric,
"porder_user_name" varchar,
"porder_delivery_datetime" date,
"product_requested" numeric,
"product_produced" numeric,
"product_code" varchar,
"product_name" varchar,
"component_product_name" varchar,
"component_quantity" numeric,
"component_um_id" varchar,
"total" numeric
)
ORDER BY
"porder_id";
EDIT: I remove the VARIADIC words that were in the function and in the select that calls the function
Can you hep me Please.

Answer 1

You don't need to declare your function as VARIADIC to pass array to it.
Try this
CREATE OR REPLACE FUNCTION xxx(
p_product_id integer,
P_INVTRANSFERENCES_IDS integer[])
RETURNS SETOF record
LANGUAGE sql
AS
$body$
select p_product_id = ANY(P_INVTRANSFERENCES_IDS)
$body$;
Note there is no VARIADIC before P_INVTRANSFERENCES_IDS.
You also need to use ANY instead of IN to check membership in array.
SqlFiddle