ERROR: op ANY/ALL (array) requires array on right side in Postgres Function

Question

我在我的 PostgreSQL 函数中遇到错误，我通过传递两个 parameters.Below 是我的函数和 table 结构来过滤我的数据，请告诉我哪里和哪里做错了

CREATE TABLE table_2(
  id_col text,
  name_col text);

INSERT INTO table_2(id_col, name_col)
VALUES (1, 'A'),(2, 'B'),(3, 'C'),
       (4, 'D'),(5, 'E'),(6, 'F');

CREATE OR REPLACE FUNCTION test_str_1(IN param_name_col text,
                           VARIADIC integer[], OUT id_col text, OUT name_col text)
  RETURNS SETOF record AS
$BODY$
  BEGIN
return query
   SELECT t2.id_col,t2.name_col from table_2 t2
   Where t2.name_col = param_name_col AND t2.id_col::int = ANY() ;
  END
$BODY$
  LANGUAGE plpgsql VOLATILE

SELECT test_str_1('A', 1,2,3);

Answer 1

您可以使用 unnest:

CREATE OR REPLACE FUNCTION test_str_1(IN param_name_col text,
                           VARIADIC integer[], OUT id_col text, OUT name_col text)
RETURNS SETOF record AS
$BODY$
BEGIN
   return query
   SELECT t2.id_col,t2.name_col
   from table_2 t2
   Where t2.name_col = param_name_col 
      AND t2.id_col::int IN (SELECT * FROM unnest());
END
$BODY$
LANGUAGE plpgsql VOLATILE

SELECT test_str_1('A', 1,2,3);
-- "(1,A)"

或者只是将 ANY() 更改为 ANY()（$1 - 是第一个参数，$2 - 是第二个参数）：

CREATE OR REPLACE FUNCTION test_str_1(IN param_name_col text,
                              VARIADIC integer[], OUT id_col text, OUT name_col text)
RETURNS SETOF record AS
$BODY$
BEGIN
   return query
   SELECT t2.id_col,t2.name_col
   from table_2 t2
   Where t2.name_col = param_name_col 
      AND t2.id_col::int = ANY();
END
$BODY$
LANGUAGE plpgsql VOLATILE

SELECT test_str_1('A', 1,2,3);
-- "(1,A)"

</code> 是值为 <code>'A' 的第一个参数，ANY 需要数组类型的参数 ().

ERROR: op ANY/ALL (array) requires array on right side in Postgres Function

ERROR: op ANY/ALL (array) requires array on right side in Postgres Function

postgresql

plpgsql