Postgresql PLPGSQL错误：查询在参数声明中没有结果数据的目标

我有一个奇怪的Postgres错误说：

NOTICE:  create_task() failed with... error: 42601 query has no destination for result data
NOTICE:  context: >>PL/pgSQL function app.create_task(character varying,character varying,character varying,integer,integer,integer,character varying,character varying,integer,integer,integer,integer,integer,integer,integer,integer,integer,integer,integer,boolean,integer,character varying,character varying,character varying) line 22 at SQL statement<<
result=undefined

“电子邮件”

（参数声明）与“结果数据”的目的地有什么关系？这甚至不是一个声明。很奇怪。有一些错误消息是不清楚的

我调用的函数声明如下：

CREATE OR REPLACE FUNCTION app.create_task(
    identity_id_str     varchar,
    session_str         varchar,
    company_id_str      varchar,
    parent_dep_id       integer,
    sender_id           integer,
    recipient_id        integer,
    title               varchar,
    description         varchar,
    template_id         integer,
    plan_start_date     integer,
    plan_end_date       integer,
    start_date          integer,
    end_date            integer,
    time2solve          integer,
    type_id             integer,
    priority_id         integer,
    status_id           integer,
    progress            integer,
    access              integer,
    is_template         boolean,
    udata_id            integer,
    full_name           varchar,
    email               varchar,
    notes               varchar
)
RETURNS integer as $$
DECLARE
    v_identity_id               bigint;
    v_session                   bigint;
    v_company_id                bigint;
    user_id                     integer;
    utype                       smallint;
    server_session              bigint;
    schema_name                 varchar;
    query                       varchar;
    generic                     boolean;
    current_ts                  integer;
    dep_id                      integer;
    _c                          text;
BEGIN
        SELECT extract(epoch from now())::integer into current_ts;
        SELECT identity_id_str::bigint INTO v_identity_id;
        SELECT session_str::bigint INTO v_session;
        SELECT company_id_str::bigint INTO v_company_id;
        schema_name:='comp' || company_id_str;

        select session from app.session where app.session.identity_id=v_identity_id and app.session.session=v_session;
        IF NOT FOUND
        THEN
            RAISE EXCEPTION 'Invalid session' USING ERRCODE = '-1';
        END IF;

        query:='SELECT utype FROM uzer,identity WHERE uzer.identity_id=identity.identity_id AND uzer.user_id=' || sender_id;
        EXECUTE QUERY query into utype;
        IF NOT FOUND
        THEN
            RAISE EXCEPTION 'User not found' USING ERRCODE = '-2';
        END IF;

        IF current_ts > start_date 
        THEN
            start_date:=current_ts;
        END IF;
        query:='SELECT dep_id FROM ' || schema_name || '.task WHERE dep_id=' || parent_dep_id ;
        PERFORM query;
        IF NOT FOUND
        THEN
            RAISE EXCEPTION 'Parent task was not found' USING ERRCODE = '-1';
        END IF;

        IF udata = 0 THEN
            query='INSERT INTO ' || schema_name || '.udata(user_id,email,full_name,notes) VALUES ('
                || user_id
                || ',''' || email 
                || ',''' || full_name
                || ''') returning udata_id';
            EXECUTE query into udata_id;
        END IF;

        query:='INSERT INTO ' || schema_name || '.task(template_id,creator_id,user_id,udata_id,num_inlinks,plan_start_date,plan_end_date,start_date,end_date,time2solve,type_id,priority_id,status_id,progress,access,title,description) VALUES('  
                || template_id
                || ',' || user_id 
                || ',' || user_id
                || ',' || udata_id
                || ',1' 
                || ',''''' 
                || ',''''' 
                || ',''''' 
                || ',''''',
                || ',''''',
                || ',' || time2solve
                || ',' || type_id
                || ',' || priority_id
                || ',' || status_id
                || ',' || progress
                || ',' || access
                || ',"' || title
                || '","' || description
                || '") returning dep_id';
        EXECUTE query INTO dep_id;
        query:='INSERT INTO ' || schema_name || '.link(from_dep_id,to_dep_id,action_id,link_type,sender_id,recipient_id) VALUES(' ||
                parent_dep_id || ',' || dep_id || ',2,' || user_id || ',' || recipient_id || ')';
        RAISE NOTICE 'q=%',query;
        PERFORM query;
        query:='INSERT INTO ' || schema_name || '.action(dep_id,sender_id,recipient_id,dateinserted,minutes,code,comment,description) VALUES(' ||
                dep_id || ',' || sender_id || ',' || recipient_id || ',' || start_date || ',0,2,1,''Task created'')';
        RAISE NOTICE 'q=%',query;
        PERFORM query;
        RETURN dep_id;
EXCEPTION
    WHEN OTHERS THEN
        RAISE NOTICE 'create_task() failed with... error: % %',SQLSTATE,SQLERRM;
        GET STACKED DIAGNOSTICS _c = PG_EXCEPTION_CONTEXT;
        RAISE NOTICE 'context: >>%<<', _c;
END
$$ LANGUAGE plpgsql;

这是我的调试输出：

Received from client: {"cmd_code":6,"rkey":"9d07ac2ddb2b1d7f","params":{"identity_id_str":"8","session_str":"162616490852087","company_id_str":"24","task_data":{"parent_dep_id":0,"sender_email":0,"recipient_id":1,"title":"","description":"","template_id":0,"plan_start_date":0,"plan_end_date":0,"start_date":0,"end_date":0,"time2solve":0,"type_id":0,"priority_id":0,"status_id":0,"progress":0,"access":0,"is_template":false,"full_name":"","email:":"hola@mundo.com","notes":""}}}
cmd_code=6
NOTICE:  create_task() failed with... error: 42601 query has no destination for result data
NOTICE:  context: >>PL/pgSQL function app.create_task(character varying,character varying,character varying,integer,integer,integer,character varying,character varying,integer,integer,integer,integer,integer,integer,integer,integer,integer,integer,integer,boolean,integer,character varying,character varying,character varying) line 22 at SQL statement<<
result=undefined

error=|||||||{ Error: ERROR:  control reached end of function without RETURN
CONTEXT:  PL/pgSQL function app.create_task(character varying,character varying,character varying,integer,integer,integer,character varying,character varying,integer,integer,integer,integer,integer,integer,integer,integer,integer,integer,integer,boolean,integer,character varying,character varying,character varying)

    at Client._readError (/usr/node/lib/node_modules/pg-native/index.js:80:13)
    at Client._read (/usr/node/lib/node_modules/pg-native/index.js:121:19)
    at emitNone (events.js:86:13)
    at PQ.emit (events.js:185:7)
  severity: 'ERROR',
  sqlState: '2F005',
  messagePrimary: 'control reached end of function without RETURN',
  context: 'PL/pgSQL function app.create_task(character varying,character varying,character varying,integer,integer,integer,character varying,character varying,integer,integer,integer,integer,integer,integer,integer,integer,integer,integer,integer,boolean,integer,character varying,character varying,character varying)',
  sourceFile: 'pl_exec.c',
  sourceLine: '361',
  sourceFunction: 'plpgsql_exec_function' }||||||||

Error:[[[Error: ERROR:  control reached end of function without RETURN
CONTEXT:  PL/pgSQL function app.create_task(character varying,character varying,character varying,integer,integer,integer,character varying,character varying,integer,integer,integer,integer,integer,integer,integer,integer,integer,integer,integer,boolean,integer,character varying,character varying,character varying)
]]]

从客户处收到：{“cmd_code”：6，“rkey”：“9d07ac2ddb2b1d7f”，“params”：“{”身份id_str“：“8”，“session_str”：“162616490852087”，“公司id_str”：“24”，“任务数据”：{“父部门id”：0，“发件人电子邮件”：0，“收件人id”：1，“标题”：“说明”：“，“模板id”：0，“计划开始日期”：0，“计划结束日期”：0，“开始日期”：0，“结束日期”：0，“结束日期”，“键入\u id:0，“优先级\u id:0”，状态\u id:0，“进度”：0，“访问”：0，“是\u模板”：false，“全名”：”“电子邮件：”hola@mundo.com“，“注释”：“}}”
cmd_代码=6
注意：create_task（）失败，错误为：42601查询没有结果数据的目标
注意：context:>>PL/pgSQL函数app.create_任务（字符变化、字符变化、整数、整数、整数、整数、字符变化、整数、整数、整数、整数、整数、整数、整数、整数、布尔、整数、字符变化、字符变化、字符变化）SQL语句第22行可能有不止一个问题。一些错误是以前错误的结果

您尝试使用
PERFORM
语句运行动态SQL。它不起作用

query := 'INSERT ...'
PERFORM query; -- it is wrong
EXECUTE query; -- only this is working

PostgreSQL控制台
psql
具有命令
\sf+funcname
。它显示行号，并可帮助您识别有问题的行。
错误消息的行计数开始于函数体的开头，该函数体位于此处的美元引号处（包括行）：

第22行实际上是：

select session from app.session where app.session.identity_id=v_identity_id and app.session.session=v_session;

这就是没有目的地的
SELECT
。将使用
PERFORM
而不是
SELECT
，但是如果存在
，最好使用
：

IF EXISTS (SELECT 1
           FROM   app.session s
           WHERE  s.identity_id = v_identity_id
           AND    s.session = v_session
          ) THEN
   RAISE EXCEPTION 'Invalid session' USING ERRCODE = '-1';
END IF;

可能还有更多的问题，我不再看了

相关，有更多解释：




您的
begin…exception
块掩盖了真正错误的位置和性质。将其清除。真正的错误可能是试图
在pl/pgsql中选择某个
，而不使用
进入
或
返回查询
。您希望
执行
。谷歌搜索错误应该已经解释了这一点帽子
RETURNS integer as $$

select session from app.session where app.session.identity_id=v_identity_id and app.session.session=v_session;

IF EXISTS (SELECT 1
           FROM   app.session s
           WHERE  s.identity_id = v_identity_id
           AND    s.session = v_session
          ) THEN
   RAISE EXCEPTION 'Invalid session' USING ERRCODE = '-1';
END IF;