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Postgresql Jsonb字段内含数组属性的删除元素操作

 1.创建示例表

create temp table settings asselect     {"west": [      {"id": "aa92f346-7a93-4443-949b-4eab0badd983", "version": 1},      {"id": "cd92e346-6b04-3456-050a-5eeb0bddd027", "version": 3}    ]}::jsonb as value;

2.如下保留version=1的数据, 如果把where (j->>version‘)::int = 1改为where (j->>version‘)::int <> 1 则进行删除操作

update settings set value = http://www.mamicode.com/jsonb_set(value, {west}, jsonb_build_array(ARRAY(select j from(SELECT jsonb_array_elements(value->west) j from settings ) as bwhere (j->>version)::int = 1)))

参考资料:

http://stackoverflow.com/questions/38640168/find-position-of-object-in-postgres-jsonb-array

http://dba.stackexchange.com/questions/54283/how-to-turn-json-array-into-postgres-array

 

Postgresql Jsonb字段内含数组属性的删除元素操作