为Go中的PGSQL函数提供参数

问题描述：

I am attempting to pass arguments to the following function in Golang with db.QueryRow(), however it doesn't seem to accept the usual ?.

DROP FUNCTION IF EXISTS upsertplatform(pToken varchar);
CREATE FUNCTION upsertplatform(pToken varchar) RETURNS int as $$
    DECLARE
        _id int = NULL;
    BEGIN
        LOOP
            UPDATE public.platform SET platformToken = pToken WHERE userID = 3 AND platformID = 2 RETURNING id into _id;
            IF NOT FOUND THEN
                BEGIN
                    INSERT INTO public.platform (userID, platformID, platformToken) VALUES (3, 2, '1234-123-bbasd') RETURNING id into _id;
                EXCEPTION WHEN unique_violation THEN
                        UPDATE public.platform SET platformToken = '1234-123-bbasd' WHERE userID = 3 AND platformID = 2 RETURNING id into strict _id;
                END;
            END IF;
        EXIT WHEN _id IS NOT NULL;
        END LOOP;
    RETURN 1;
    END
$$ LANGUAGE PLPGSQL;

This is the query I am having issues with, I'm unsure how to pass arguments to it:

res := db.QueryRow(`SELECT * FROM upsertplatform( ? )`, "test123")

How do I do this correctly?

我正在尝试使用db.QueryRow（）将参数传递给Golang中的以下函数，但是它没有似乎接受了通常的？。 p>

  DROP FUNCTION如果存在upsertplatform（pToken varchar）; 
CREATE FUNCTION upsertplatform（pToken varchar）返回int为$$ 
 DECLARE 
 _id  int = NULL; 
开始
循环
更新public.platform SET platformToken = pToken WHERE用户ID = 3 AND platformID = 2将ID返回_id; 
如果未找到则开始
 BEGIN 
插入public.platform（  userID，platformID，platformToken）值（3，2，'1234-123-bbasd'）返回id到_id; 
当unique_violation时，则例外
更新public.platform SET platformToken ='1234-123-bbasd'WHERE userID =  3 AND platformID = 2将id返回到严格的_id; 
 END; 
 END IF; 
 _id不为NULL时退出; 
 E  ND LOOP; 
 RETURN 1; 
 END 
 $$ LANGUAGE PLPGSQL; 
  code>  pre> 
 
 这是我遇到的查询，我不确定 将参数传递给它： p> 
 
 
  res：= db.QueryRow（`SELECT * FROM upsertplatform（？  ）`，“ test123”）
  code>  pre> 
 
 如何正确执行此操作？ p> 
  div>

答

The Postgres drivers use positional notation for parameters, $1, $2,... So just SELECT * FROM upsertplatform($1).

为Go中的PGSQL函数提供参数

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