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fuxkcsdn
V2EX  ›  MySQL

mysql json 查询如何匹配所有数组元素的属性?

  •  
  •   fuxkcsdn · Dec 28, 2018 · 6305 views
    This topic created in 2845 days ago, the information mentioned may be changed or developed.

    mysql 版本 5.7.23

    期望的结果是查找 rsp.data.codes 数组中, object.code 值为 abc 的行

    是我的 json path 有误还是 mysql 不支持这样的查询呢?

    create table test(
      id int(1) unsigned auto_increment primary key,
      jdoc json
    )engine=InnoDB charset=utf8mb4;
    
    insert into test(jdoc) values
    ('{"req":["xyz"],"rsp":{"data":{"codes":[{"code":"abc"},{"code":"def"},{"code":"xyz"}]}}}'),
    ('{"req":["222"],"rsp":{"data":{"codes":[{"code":"ijk"},{"code":"opq"},{"code":"123"}]}}}');
    
    -- 记录为空
    select * from test where json_extract(jdoc, "$.rsp.data.codes[*].code") = "abc";
    
    -- 有记录
    select * from test where json_extract(jdoc, "$.rsp.data.codes[0].code") = "abc";
    
    fuxkcsdn
        1
    fuxkcsdn  
    OP
       Dec 28, 2018
    select * from test where JSON_CONTAINS(jdoc->"$.rsp.data.codes[*].code", JSON_ARRAY('abc'));

    or

    select * from test where JSON_CONTAINS(jdoc->"$.rsp.data.codes", JSON_OBJECT('code', 'abc'));

    v.a. https://stackoverflow.com/questions/38797627/query-a-json-column-with-an-array-of-object-in-mysql
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