PostgreSQL嵌套表

Question

我有一个看起来像附图的网格。网格的每个级别对应一个表。

研究表：代理，学习，ind_no，ind_sponsor，current_status

网站表： study，amtrackid，name，pi，dsa，status，irbappcr，ibc，obarac，ohrp，ib，prot，ic，global1572

实验室表： amtrackid，labid，name，cap，clia，lnv

调查员表： amtrackid，personid，name，cv，ml，fd，dot，hspt，pisort

如何生成循环通过表格的CSV文件，并提供类似于嵌套网格的输出？

-Agent     Study        IND_no  ND_sponsor   Current_Status-------------------------------------------------------------
-9-cis-UAB30;UWI10-16-01R; 101064;  DCP;        Completed------------------------------------------------
------------------Site                                          PI             ...-----------------------------------------------------------------------------------------------------------------
-----University of Wisconsin Hospital and Clinics;Kolesar, Jill M, PharmD... ------------------------------------     ---------Lab  CAP CLIA  LNV------------------------------------------------------------------------------------------------
--------UAB University of Alabama Hospital Lab ...-----------------------------------------------------------------
---------Investigator   CV  FD-----------------------------------------------------------------------------------------------
---------Rahman (Davis), Zahra...           

实验室和调查员处于同一水平。

更新

我尝试创建一个循环遍历它的函数，但查询会永远运行。我做错了什么？

CREATE OR REPLACE FUNCTION dw_regtrack.dash_parsing_quicklist(userName character)
  RETURNS integer AS
$BODY$
DECLARE
  superData RECORD;
  studyData RECORD;
  siteData RECORD;
  siteData2 RECORD;

BEGIN
truncate table dw_regtrack.dash_output_quicklist; 

for superData in (select agent, study, ind_no, sponsor, status, user_name as uname from dw_regtrack.qlstudies st left join dw_regtrack.user_studies us ON st.study=us.study_name)
loop
    INSERT INTO dw_regtrack.dash_output_quicklist(agent,inform1,inform2,inform3,inform4,inform5)
        (select agent, study, ind_no, sponsor, status,user_name from dw_regtrack.qlstudies st left join dw_regtrack.user_studies us ON st.study=us.study_name where superData.uname='gsamara');

    --(select agent, study, ind_no, sponsor, status from dw_regtrack.qlstudies st left join dw_regtrack.user_studies us ON st.study=us.study_name where user_name='gsamara');

    for studyData in (select study, amtrackid, name, pi, status, irbappcr, ohrp, ib, prot, ic, global1572, 1572, ibc, obarac, dsa from dw_regtrack.qlstudysites2)
    loop

        insert into dw_regtrack.dash_output_quicklist(agent, inform1, inform2, inform3, inform4, inform5, inform6, inform7, inform8, inform9, inform10, inform11,inform12,inform13,inform14,inform15)
        (select '', study, amtrackid, name, pi, status, irbappcr, ohrp, ib, prot, ic, global1572, 1572, ibc, obarac, dsa from dw_regtrack.qlstudysites2 where studyData.study=superData.study);

        for siteData in (select amtrackid, labid, name, cap, clia, lnv from dw_regtrack.qlstudysitelabs)
        loop        
            insert into dw_regtrack.dash_output_quicklist(agent, inform1, inform2, inform3,inform4,inform5,inform6,inform7)
            (select '','', amtrackid, labid, name, cap, clia, lnv from dw_regtrack.qlstudysitelabs where siteData.amtrackid=StudyData.amtrackid);

        end loop;

        for siteData2 in (select amtrackid, personid, name, cv, ml, fd, hspt, dot, pisort from dw_regtrack.qlstudysiteinvests2)
        loop    
            insert into dw_regtrack.dash_output_quicklist(agent, inform1, inform2, inform3, inform4, inform5, inform6, inform7, inform8,inform9,inform10)
            (select '', '', amtrackid, personid, name, cv, ml, fd, hspt, dot, pisort from dw_regtrack.qlstudysiteinvests2 where siteData2.amtrackid=studyData.amtrackid);

        end loop;
    end loop;
end loop;

Return 1;
END
$BODY$
  LANGUAGE plpgsql VOLATILE
  COST 100;
ALTER FUNCTION dw_regtrack.dash_parsing_quicklist(character)
  OWNER TO postgres;