選擇自己的數組。 PostgreSQL的9.5

Question

我有以下模式：

create table reports (id bigserial primary key); 
create table scens (id bigserial primary key,report_id bigint references reports(id), path_id bigint); 
create table runs (id bigserial primary key,scen_id bigint references scens(id)); 
create table fails (
    id bigserial primary key, 
    run_id bigint references runs(id), 
    type varchar not null 
); 

create table errors (
    id bigserial primary key, 
    run_id bigint references runs(id), 
    type varchar not null 
); 
INSERT INTO reports(id) 
    VALUES (1); 
INSERT INTO reports(id) 
    VALUES (2); 

INSERT INTO scens(id, report_id) 
    VALUES (555, 1); 
INSERT INTO scens(id, report_id) 
    VALUES (666, 2); 

INSERT INTO runs(id, scen_id) 
    VALUES (1, 555); 
INSERT INTO runs(id, scen_id) 
    VALUES (2, 666); 
INSERT INTO runs(id, scen_id) 
    VALUES (3, 666); 
INSERT INTO runs(id, scen_id) 
    VALUES (4, 666); 

INSERT INTO errors(id, run_id, type) 
    VALUES (DEFAULT, 2, 'ERROR2 TYPE'); 
INSERT INTO errors(id, run_id, type) 
    VALUES (DEFAULT, 3, 'ERROR2 TYPE'); 

INSERT INTO fails(id, run_id, type) 
    VALUES (DEFAULT, 1, 'Attachment Journal Mismatch'); 
INSERT INTO fails(id, run_id, type) 
    VALUES (DEFAULT, 2, 'Appeared new difficulty'); 
INSERT INTO fails(id, run_id, type) 
    VALUES (DEFAULT, 2, 'Parameters Mismatch'); 
INSERT INTO fails(id, run_id, type) 
    VALUES (DEFAULT, 3, 'Attachment Journal Mismatch'); 
INSERT INTO fails(id, run_id, type) 
    VALUES (DEFAULT, 3, 'Appeared new difficulty'); 
INSERT INTO fails(id, run_id, type) 
    VALUES (DEFAULT, 3, 'Parameters Mismatch'); 

我需要找到一個運行（實際上更多的跑步），其中有錯誤ERROR2 TYPE和失敗「出現了新的困難」和「參數不匹配」。

正確

1 -> 'ERROR2 TYPE' 
1 -> 'Appeared new difficulty' 
1 -> 'Parameters Mismatch' 

錯誤

2 -> 'Parameters Mismatch' 
2 -> 'Appeared new difficulty' 

因此，請求應該找哪裏都要求運行失敗和錯誤屬於特定運行：

的1運行不適合我因爲它沒有'參數不匹配'並且沒有錯誤ERROR2 TYPE。 2運行適合我，因爲它具有所有錯誤（ERROR2 TYPE）並且全部失敗（'顯示新的難度'和'參數不匹配'）。 3運行適合我，因爲它具有所有錯誤（ERROR2 TYPE）並且全部失敗（'顯示新的難度'和'參數不匹配'）。如果運行失敗（它有新的失敗：'Attachment Journal Mismatch'），那麼運行就沒有問題，但它至少要求失敗和錯誤。

我該怎麼辦？

下列SQL完全不工作（它覺得沒有什麼）：

select scens.id as scen_id, 
scens.path_id, fails.type, reports.id, runs.id 
from reports 
inner join scens on reports.id=scens.report_id 
inner join runs on runs.scen_id=scens.id 
inner join fails on fails.runs_id=runs.id 
where reports.id=2 and fails.type=''Parameters Mismatch' 
and fails.type='Appeared new difficulty' 

此代碼soens;噸工作過，只能搜索1的比賽，但不是一整套（「出現了新的困難'，'Parameters Mismatch'）：

select scens.custom_id as scen_custom_id, scens.id as scen_id, 
    scens.path_id, scens.category, fails_map.type, f.error_type 
    from reports 
    inner join scens on reports.id=scens.report_id 
    inner join runs on runs.scen_id=scens.id 
    inner join fails on fails.runs_id=runs.id 
    INNER JOIN 
    unnest(array['Appeared new difficulty', 'Parameters Mismatch']) f (error_type) 
    on fails.type=f.error_type 
    where reports.id=2 

似乎我需要某種交集。

Answer 1

我已與SQL解決它：

select runs.id 
    from reports 
    inner join scens s on reports.id=s.report_id 
    inner join runs on runs.scen_id=s.id 
    where exists(select * from fails where fails.path_id=s.path_id and fails.type='Rotation Mismatch') 
    and exists(select * from fails where fails.path_id=s.path_id and fails.type='Disappeared inspection') 
    and reports.id=2 

主題可以關閉。

Answer 2

這是我的理解：

select 
    reports.id as report, 
    scens.id as scen, 
    scens.path_id as path, 
    runs.id as run, 
    array_agg(distinct fails.type) as fails, 
    array_agg(distinct errors.type) as errors 
from 
    reports 
    inner join 
    scens on reports.id = scens.report_id 
    inner join 
    runs on runs.scen_id = scens.id 
    left join 
    fails on fails.run_id = runs.id 
    left join 
    errors on errors.run_id = runs.id 
where reports.id = 2 
group by 1,2,3,4 
having 
    array['Parameters Mismatch','Appeared new difficulty']::varchar[] <@ array_agg(fails.type) and 
    array['ERROR2 TYPE']::varchar[] <@ array_agg(errors.type) 
; 
report | scen | path | run |          fails          |  errors  
--------+------+------+-----+---------------------------------------------------------------------------------+----------------- 
     2 | 666 |  | 2 | {"Appeared new difficulty","Parameters Mismatch"}        | {"ERROR2 TYPE"} 
     2 | 666 |  | 3 | {"Appeared new difficulty","Attachment Journal Mismatch","Parameters Mismatch"} | {"ERROR2 TYPE"}