plpgsql：没有函数匹配给定的名称和参数类型。您可能需要添加显式类型转换

Question

我使用 DBeaver 在 PostgreSQL 中创建了一个存储过程。＆我试图通过从 DBeaver 调用过程将数据插入 table。但它给我一个错误

SQL Error [42883]: ERROR: function public.proc_insert_test(integer, unknown, unknown, unknown, unknown, timestamp with time zone, integer, integer, integer, timestamp with time zone) does not exist Hint: No function matches the given name and argument types. You might need to add explicit type casts. Position: 8

程序：

CREATE OR REPLACE FUNCTION public.proc_insert_test(p_brndcode integer, 
                                                p_brndname varchar(100), 
                                                p_brndsname varchar(100), 
                                                p_prdtype char(1),
                                                p_discontinue char(1),
                                                p_crddate date,
                                                p_status integer,
                                                p_recstat integer,
                                                p_brndgrpseqno integer,
                                                p_wefrom date)
RETURNS char 
LANGUAGE plpgsql
AS $body$
BEGIN
    Insert into arc_mmstbrndgroup(brndcode, brndname, brndsname, prdtype, discontinue, crddate, status, recstat, brndgrpseqno, wefrom) 
    values(p_brndcode, p_brndname, p_brndsname, p_prdtype, p_discontinue, p_crddate, p_status, p_recstat, p_brndgrpseqno, p_wefrom);
END;
$body$
;

调用过程：

select public.proc_insert_test(123, 'Test2', 'Test2', 'T', 'T', now(), 1, 9, 1234, now());

可能是什么问题？

我对此完全陌生。

更新：

过程调用：

select public.proc_insert_test(123, 'Test2'::varchar(100), 'Test2'::varchar(100), 'T'::char(1), 'T'::char(1), now(), 1, 9, 1234, now());

错误：

SQL Error [42883]: ERROR: function public.proc_insert_test(integer, character varying, character varying, character, character, timestamp with time zone, integer, integer, integer, timestamp with time zone) does not exist Hint: No function matches the given name and argument types. You might need to add explicit type casts. Position: 8

Answer 1

Postgres 不允许从 timestamp 到 date 数据类型的隐式转换。注意 - Postgres date 类型不同于 Oracle 的 date 类型。

 CREATE OR REPLACE FUNCTION public.test(v date)
  RETURNS void
  LANGUAGE plpgsql
 AS $function$
 BEGIN
   RAISE NOTICE '%', v;
 END;
 $function$

postgres=# SELECT test(now());
ERROR:  function test(timestamp with time zone) does not exist
LINE 1: SELECT test(now());
               ^
HINT:  No function matches the given name and argument types. You might need to add explicit type casts.
postgres=# SELECT test(current_date);
NOTICE:  2019-11-14
+------+
| test |
+------+
|      |
+------+
(1 row)

postgres=# SELECT test(now()::date);
NOTICE:  2019-11-14
+------+
| test |
+------+
|      |
+------+
(1 row)

从 timestamp（now() 函数的结果类型）到 date 的转换丢失了转换。默认情况下不允许。所以你应该强制执行它（通过显式转换），或者你应该使用 returns date 类型的伪常量 current_date，并且不需要任何转换。

plpgsql：没有函数匹配给定的名称和参数类型。您可能需要添加显式类型转换

plpgsql: No function matches the given name and argument types. You might need to add explicit type casts

postgresql

plpgsql