Postgres sql 函数没有给出正确的计数

Question

我正在使用下面的查询来检查下面数据库中的数据计数是代码。

--- select "fn_delete_data"('7503','Test','ONE');
-- DROP FUNCTION fn_delete_data(character varying,character varying,character varying) 
CREATE OR REPLACE FUNCTION public."fn_delete_data"(
    IN IN_id character varying,
    IN IN_source character varying,
    IN IN_deletion_type character varying,
    OUT Out_message character varying,
    OUT Out_is_success INTEGER
)AS $$
DECLARE
    v_count integer := 0;
BEGIN
raise notice 'v_count %', v_count;
    CREATE TEMP TABLE "simple_count" ON COMMIT DROP AS(select * from public.client where "other_id" = IN_id
                UNION
                select * from public.client where "id" = IN_id);
                
    select count(*) INTO v_count from simple_count; 
    raise notice 'v_count %', v_count;
    IF (v_count > 0) THEN
        Out_is_success = 0;
        Out_message = 'Data Found. Not Allow to delete';
    ELSE
        Out_is_success = 1;
        Out_message = 'No Data found. Allow to delete';
    END IF;
END 
$$ LANGUAGE plpgsql;

我有 print v_count ，它给出了每次差异值。第一个打印给我 v_count 0 另一个打印给出每次差异计数当我运行查询外部函数时它给我正确的 1 计数。我不知道我做错了什么请帮忙。

Answer 1

我认为问题出在你的临时工上 table ON COMMIT DROP，我认为它在创建自身后会自行下降，因为没有事务，所以你可以简化你的功能，它应该工作：

CREATE OR REPLACE FUNCTION public."fn_delete_data"(
    IN IN_id character varying,
    IN IN_source character varying,
    IN IN_deletion_type character varying,
    OUT Out_message character varying,
    OUT Out_is_success INTEGER
)AS $$
DECLARE
    v_count integer := 0;
BEGIN
    raise notice 'v_count %', v_count;
    select count(*) INTO v_count from public.client where IN_id in ("Id", "other_id"); 
    raise notice 'v_count %', v_count;
    IF (v_count > 0) THEN
        Out_is_success = 0;
        Out_message = 'Data Found. Not Allow to delete';
    ELSE
        Out_is_success = 1;
        Out_message = 'No Data found. Allow to delete';
    END IF;
END 
$$ LANGUAGE plpgsql;

Postgres sql 函数没有给出正确的计数

Postgres sql function is not giving proper count

postgresql

postgresql-9.3