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[英]Storing JSON objects in the postgreSQL using parameterized query
[英]object of objects query using postgresql
我正在使用 postgresql
在配置文件 model 中有一個字段(進度),它是一個 object 並且在這個 object 中有多個對象
每個object有2個號碼
我想檢查這 2 個數字是否等於做加分
progress : {
"progress1": {
"mustWin": 1,
"progress": 0
},
"progress2": {
"mustWin": 1,
"progress": 0
},
}
這是進度的默認值
我怎樣才能訪問 progress1 和 2
如果你想手動獲取 progress1 和 progress2 值,那么使用這個:
with tb as (
select
'{"progress" : {
"progress1": {
"mustWin": 1,
"progress": 0
},
"progress2": {
"mustWin": 1,
"progress": 0
}
}}'::jsonb as js
)
select
tb.js->'progress'->'progress1',
tb.js->'progress'->'progress2'
from tb
-- Result:
|progress1 |progress2 |
|-----------------------------+-----------------------------+
|{"mustWin": 1, "progress": 0}|{"mustWin": 1, "progress": 0}|
如果你不知道有多少對象有內部進度,那么使用這個:
with tb as (
select
'{"progress" : {
"progress1": {
"mustWin": 1,
"progress": 0
},
"progress2": {
"mustWin": 1,
"progress": 0
},
"progress3": {
"mustWin": 1,
"progress": 0
},
"progress4": {
"mustWin": 1,
"progress": 0
}
}}'::jsonb as js
)
select tb2."key", tb2."value" from tb tb1
cross join jsonb_each_text(tb1.js->'progress') tb2
-- Result:
| key | value |
|-----------|-------------------------------|
| progress1 | {"mustWin": 1, "progress": 0} |
| progress2 | {"mustWin": 1, "progress": 0} |
| progress3 | {"mustWin": 1, "progress": 0} |
| progress4 | {"mustWin": 1, "progress": 0} |
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