使用 IN 和 OUT 参数创建存储过程

Question

这是我第一次创建同时具有 IN 和 OUT 参数的存储过程，我很迷茫。我想要做的是让 API 将 3 个参数（ID_TX、FORM_NAME 和 DATA_DATE）传递到我的存储过程中，并让我的存储过程执行一个简单的插入，然后传递一个值（SUBMISSION_ID）。但是，当我尝试编译代码时，我不断收到错误消息。错误如下：

 Error(8,1): PLS-00103: Encountered the symbol "INSERT" when expecting one of the following:     begin function pragma procedure subtype type <an identifier>    <a double-quoted delimited-identifier> current cursor delete    exists prior The symbol "begin" was substituted for "INSERT" to continue. 

Error(10,1): PLS-00103: Encountered the symbol "RETURNING" when expecting one of the following:     . ( ) , * % & = - + < / > at in is mod remainder not rem =>    <an exponent (**)> <> or != or ~= >= <= <> and or like like2    like4 likec between || multiset member submultiset 

Error(11,1): PLS-00103: Encountered the symbol "END" 

我是否缺少一些语法基础/知识？提前致谢！

create or replace procedure API_SUBMISSION(rID_TX IN VARCHAR, rFORM_NAME IN VARCHAR, rDATA_DATE IN VARCHAR, v_submission_id OUT NUMBER)
IS BEGIN
DECLARE
v_submission_id number;
insert into submission (SUBMISSION_ID, RESPONDENT_ID, SUBMISSION_DT, SUBMISSION_TYPE_ID, SUBMISSION_NAME_TX, SUBMISSION_SEQ_NB, CREATE_DT, CREATE_USER_ID, MODIFY_DT, MODIFY_USER_ID, EFFECTIVE_DT, INACTIVE_DT)
            VALUES (null, get__respondent_id(rID_TX, rFORM_NAME, trunc(sysdate), sysdate, rDATA_DATE || 'TEST ' || rFORM_NAME, 1, sysdate, 1, null, null, null, null)
returning submission_id into v_submission_id;
END API_SUBMISSION;

Answer 1

您的程序存在几个问题：

1. 您已经声明了一个out参数来保存返回的submission_id，所以不需要重新声明它。
2. 您不需要在过程/函数中使用 declare 关键字，除非 a) 它是一个匿名块或 b) 您正在嵌套 PL/SQL 块。你什么都不做；您可以简单地利用 IS/AS 和 BEGIN 关键字之间的隐式声明部分。在这种情况下，您不需要这样做。
3. 您在调用 get__respondent_id 时缺少右括号 - 我假设它有两个参数？

这意味着您可以将您的程序重写为：

CREATE OR REPLACE PROCEDURE api_submission(rid_tx          IN VARCHAR2,
                             rform_name      IN VARCHAR2,
                             rdata_date      IN VARCHAR2,
                             v_submission_id OUT NUMBER) IS
BEGIN
  INSERT INTO submission
    (submission_id,
     respondent_id,
     submission_dt,
     submission_type_id,
     submission_name_tx,
     submission_seq_nb,
     create_dt,
     create_user_id,
     modify_dt,
     modify_user_id,
     effective_dt,
     inactive_dt)
  VALUES
    (NULL,
     get__respondent_id(reia_id_tx, rform_name),
     trunc(SYSDATE),
     SYSDATE,
     rdata_date || 'TEST ' || rform_name,
     1,
     SYSDATE,
     1,
     NULL,
     NULL,
     NULL,
     NULL)
  RETURNING submission_id INTO v_submission_id;

END api_submission;
/