Postgres检查列表中是否有任何数组值

时间:2017-04-13 17:53:37

标签: sql postgresql

如何检查单行中的任何数组值是否在我的列表中? 这是我的桌子。我们称之为ABC

        id        |   page_id   |                                  values                                   
------------------+-------------+-------------------------------------------------------------------------
 1376092679147519 |     xyz     | {6004036173148,6003373173651,6003050657850}
 1375487155874738 |     xyz     | {6003301698460,6003232518610}
 1497527026945449 |     xyz     | {6003654559478,6003197656807}
 1375388575884596 |     xyz     | {6003512053894,6003450241842,6003051414416}
 1319144441504401 |     xyz     | {6004001256506,6003514818642,6003400993421}

我的目标是选择那些行,其中一个值出现在给定列表中(' 6004036173148',#39; 6003197656807')。

SELECT id, page_id, values from ABC WHERE -SOME CLAUSE- IN ('6004036173148', '6003197656807');

        id        |   page_id   |                                  values                                   
------------------+-------------+-------------------------------------------------------------------------
 1376092679147519 |     xyz     | {6004036173148,6003373173651,6003050657850}
 1497527026945449 |     xyz     | {6003654559478,6003197656807}

这是我的PosgreSQL表的结构

                             Table "public.ABC"
       Column       |           Type           |       Modifiers        
--------------------+--------------------------+------------------------
 id                 | character varying        | not null
 page_id            | character varying        | not null
 values             | character varying[]      | 
Indexes:
    "ABC_pkey" PRIMARY KEY, btree (id)

1 个答案:

答案 0 :(得分:2)

如果我理解正确,你需要这个:

select * from t
where "values" && '{6004036173148,6003197656807}'::character varying[]

修改

如果您需要提取某些值,则可以使用unnest函数

注意,如果同一个数组包含来自搜索列表的多个值,则会重复行。用id=2查看此示例输出,您可以看到我正在谈论的内容:

with t(id, values) as(
    select 1, '{6004036173147,6003373173651,6003050657840}'::character varying[]
    union all
    select 2, '{6004036173148,6003373173652,6003050657850}'::character varying[]
    union all
    select 3, '{6004036173149,6003373173653,6003050657860}'::character varying[]
)


select tt.* from  
(select t.*, unnest(values) unn from t) tt
inner join (select unnest('{6003373173651,6004036173148,6003373173652}'::character varying[]) v  ) lst
on tt.unn = lst.v