Atitit postgre sql json使用法
目录
插入数据可以直接以json格式插入：
insert into name_age values('{"id":1,"name":"小明", "age":18}')
在json里插入新的key值gender，如下：
SELECT info||'{"gender":"男"}'::jsonb from name_age where (info->>'id')::int4 = 1
| Op | Postgre实现 | Demo |
| Get JSON object field by key Get JSON array element | -> |
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| Get JSON object field as text | ->> |
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| Get JSON array element as text | ->> |
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| Get JSON object at specified path | #> json_extract_path |
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| Get JSON object at specified path as text | ##> |
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| exist as a top-level key
| ? |
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| these array strings exist as top-level keys是否存在系列key | ?| |
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| Do all of these array strings exist as top-level keys? | ?& |
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| Delete key/value | - |
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| Delete the field or element with specified path | #- |
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| Str_to json | to_json(anyelement) |
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| array_to_jso |
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| Rs row to json | row_to_json |
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| Arr to json | json_build_array |
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| json_build_object |
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| Json_Str to json | json_object |
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| json_each |
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| json_each_text |
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| json_object_keys |
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| Json to rs | json_populate_record |
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| json_to_record |
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【PostgreSQL】存取jsonb.html
PostgreSQL_ Documentation_ 9.6_ JSON Functions and Operators.html