mysql - 顶点 ORA-01008 : not all variables bound on host variables

Question

我正在使用需要动态 SQL 查询的 apex 环境。 Apex借助“经典报表(基于函数)”提供了此api。我希望您注意第 8 行。我的应用程序是，当我将其粘贴到 stackoverflow 中时，间距会变得困惑。现在的问题是我收到错误“ORA-01008:并非所有变量都绑定(bind)”，这很有趣，因为当我将第 8 行中的 :TEAM_SELECTOR 更改为“MYSQL”(这是团队名称)的内容时，然后这段代码可以正常工作。请注意，:TEAM_SELECTOR 也可以在返回的查询中使用，没有问题。我也在使用 APEX 5。

    DECLARE
        v_time INT;
        v_start_time int;
        v_end_time int;
        v_rownum int := 1;
        v_max_shifts int;
        v_location INT;
        v_P4_team_selector varchar2(30) := :TEAM_SELECTOR;
BEGIN

    select extract(hour from CAST(sysdate AS TIMESTAMP)) into v_time from dual;

    select count(*) into v_max_shifts from oncall_shift
        where team = v_P4_team_selector;

    FOR i IN 0..v_max_shifts
    LOOP

            select start_time into v_start_time from (select * from oncall_shift where team =v_P4_team_selector)
        where rownum = v_rownum;
            select end_time into v_end_time from (select * from oncall_shift where team =v_P4_team_selector)
        where rownum = v_rownum;
        v_rownum := v_rownum + 1;   

        if v_time >= v_start_time and v_time <= v_end_time
        then

                select location into v_location from oncall_shift
            where team = v_P4_team_selector
            and start_time = v_start_time
            and end_time = v_end_time;

            return '
                    SELECT E.FNAME "First Name",E.LNAME "Last Name",E.OFFICE_NUM "Office Number", E.MOBILE_NUM "Mobile Number",L.NAME Location, o.position "Primary/Secondary"
                FROM EMPLOYEE E, LOCATION L, ON_CALL O
                WHERE E.ID = O.EMP_ID
                AND L.ID = O.LOC_ID
                AND O.ONCALL_DATE=TRUNC(SYSDATE)
                AND O.TEAM=:TEAM_SELECTOR
                AND L.ID = ' || v_location ||
                ' ORDER BY l.name asc
                ';  
            EXIT;

        END IF;

    END LOOP;
END;

Answer 1

好吧，我认为问题是基于函数的经典报告在主机变量(TEAM_SELECTOR)能够被绑定(bind)之前执行，因此抛出错误。我对此的解决方案是将其更改为基于 sql 查询的普通经典报告，该查询在绑定(bind)主机变量后运行，因为我需要一个单独的变量，我使用与期望更改“v_location”相同的查询在该页面上创建了一个 P1_LOCATION 项前往 P1_LOCATION。现在，我在 P1_LOCATION 页面项中放置了获取位置的过程。

P1_LOCATION 代码:

    DECLARE
        v_time INT;
        v_start_time int;
        v_end_time int;
        v_rownum int := 1;
        v_max_shifts int;
        v_location INT;
        v_P4_team_selector varchar2(30) := :TEAM_SELECTOR;
BEGIN

    select extract(hour from CAST(sysdate AS TIMESTAMP)) into v_time from dual;

    select count(*) into v_max_shifts from oncall_shift
        where team = v_P4_team_selector;

    FOR i IN 0..v_max_shifts
    LOOP

            select start_time into v_start_time from (select * from oncall_shift where team =v_P4_team_selector)
        where rownum = v_rownum;
            select end_time into v_end_time from (select * from oncall_shift where team =v_P4_team_selector)
        where rownum = v_rownum;
        v_rownum := v_rownum + 1;   

        if v_time >= v_start_time and v_time <= v_end_time
        then

                select location into v_location from oncall_shift
            where team = v_P4_team_selector
            and start_time = v_start_time
            and end_time = v_end_time;

            APEX_UTIL.set_session_state('P1_LOCATION',v_location);

            EXIT;

        END IF;

    END LOOP;
END;

经典报表(sql查询):

SELECT E.FNAME "First Name",E.LNAME "Last Name",E.OFFICE_NUM "Office Number", E.MOBILE_NUM "Mobile Number",L.NAME Location, o.position "Primary/Secondary"
                FROM EMPLOYEE E, LOCATION L, ON_CALL O
                WHERE E.ID = O.EMP_ID
                AND L.ID = O.LOC_ID
                AND O.ONCALL_DATE=TRUNC(SYSDATE)
                AND O.TEAM=:TEAM_SELECTOR
                AND L.ID = :P1_LOCATION
                 ORDER BY l.name asc