使用uuid作为输入参数之一的复合类型数组调用postgresql存储过程

Question

我有以下用户定义的复合类型

CREATE TYPE item AS (
    SKU_REFERENCE_ID uuid, 
    QUANTITY INTEGER
);

并且我将它用作 postgresql 存储过程的输入参数的一部分（仅显示存储过程的相关部分）

CREATE OR REPLACE PROCEDURE "dbo"."sp_bulk_update_customer_cart" (IN USER_NAME VARCHAR(20), IN CUSTOMER_ITEMS item[], INOUT QUANTITY INTEGER)

但是，我无法调用程序。以下是我尝试过但都失败的一些方法：

尝试 1：

CALL dbo.sp_bulk_update_customer_cart(
    'username',
    (ARRAY['(e3903331-ce0b-4bd5-a853-ec7aa725a812, 20)','(ccbecc39-11bd-4bc4-97d6-7e2f981d30dd, 40)'])::item[], 
    0
);

尝试 2：

CALL dbo.sp_bulk_update_customer_cart(
    'username',
    '{"(e3903331-ce0b-4bd5-a853-ec7aa725a812, 20)","(ccbecc39-11bd-4bc4-97d6-7e2f981d30dd, 40)"}'::item[], 
    0
);

尝试 3：

CALL dbo.sp_bulk_update_customer_cart(
    'username',
    (SELECT ARRAY[ROW('e3903331-ce0b-4bd5-a853-ec7aa725a812', 20),ROW('ccbecc39-11bd-4bc4-97d6-7e2f981d30dd', 40)]::item[]), 
    0
);

我遇到的最常见错误是

ERROR: invalid input syntax for type uuid: "(e3903331-ce0b-4bd5-a853-ec7aa725a812,20)" CONTEXT: PL/pgSQL function dbo.sp_bulk_update_customer_cart(character varying,item[],integer) line 17 at FOR over SELECT rows SQL state: 22P02

在此寻求帮助。

Using AWS RDS postgres engine version: 13.3

测试脚本：

DROP PROCEDURE IF EXISTS "dbo"."sp_test_script";

--Not really required as temp tables are deleted after the session ends.
DROP TABLE IF EXISTS item_table;

DROP TYPE IF EXISTS item;

CREATE TYPE item AS (SKU_REFERENCE_ID uuid, QUANTITY integer);

CREATE OR REPLACE PROCEDURE "dbo"."sp_test_script" (IN USER_NAME VARCHAR(20), IN CUSTOMER_ITEMS item[], INOUT QUANTITY INTEGER) 

LANGUAGE PLPGSQL 
    
AS $$

BEGIN

    CREATE TEMP TABLE item_table (
    id SERIAL PRIMARY KEY NOT NULL,
    SKU_REFERENCE_ID uuid, 
    QUANTITY integer
    );
    
    DECLARE b item;

    BEGIN
        FOR b IN SELECT UNNEST(customer_items)
            LOOP
                RAISE NOTICE 'b.sku_reference_id: %', b.sku_reference_id; 
                RAISE NOTICE 'b.quantity: %', b.quantity;
                INSERT INTO item_table(SKU_REFERENCE_ID, QUANTITY) VALUES(b.sku_reference_id, b.quantity);
            END LOOP;
    END;

END; $$;

Answer 1

您的脚本在对数组进行迭代时出现问题 - FOR b IN SELECT UNNEST(customer_items) 中存在错误。此语法不执行记录的解包，但 FOR IN SELECT 语句需要它。你需要写：

FOR b IN SELECT * FROM unnest(customer_items)
LOOP
  ...

或（更好）

FOREACH b IN ARRAY customer_items
LOOP
  ...

使用uuid作为输入参数之一的复合类型数组调用postgresql存储过程

Call postgresql stored procedure with composite type array with uuid as one of the input parameters

stored-procedures

plpgsql