时间:2021-07-01 10:21:17 帮助过:2人阅读
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 = jsonb_set(value, ‘{west}‘, jsonb_build_array(ARRAY(select j from (SELECT jsonb_array_elements(value->‘west‘) j from settings ) as b where (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
标签: