一. Postgresql 9.5以下版本
1.1 簡單查詢(缺陷：數(shù)組必須指定下標(biāo)，不推薦)
1.1.1 模糊查詢
SELECT * FROM "public"."tf_low_data_testUser" WHERE "address" #>> '{0,name}' like '%bb%'
address字段是JSONArray類型，所以在路徑中，使用數(shù)字索引來訪問數(shù)組元素，從 0 開始計數(shù)。
1.1.2 等值匹配
SELECT * FROM "public"."tf_low_data_testUser" WHERE "address" #>> '{0,name}' = 'bbb'
如果字段是int類型，后面需要添加::int
1.1.3 時間搜索
SELECT * FROM "public"."tf_low_data_testUser" WHERE "address" #>> '{0,date}' BETWEEN '2023-08-13' AND '2023-08-17'
1.1.4 在列表
SELECT * FROM "public"."tf_low_data_testUser" WHERE "address" #>> '{0,name}' IN ('bbb','ccc')
1.1.5 包含
SELECT * FROM "public"."tf_low_data_testUser" WHERE "address" #> '{0,roles,0,roleUsers}' @> '["eee"]'
#>：獲取在指定路徑的 JSON 對象，路徑不存在則返回空。返回類型是json(b)#>>：獲取在指定路徑的 JSON 對象，路徑不存在則返回空。返回類型是text
1.2 多層級JSONArray（推薦）
如果表中有一個字段posts，數(shù)據(jù)結(jié)構(gòu)為
[{
"name": "aaa",
"ports": [{
"port": 443,
"nickname": "ggg",
"date": "2023-08-29",
"address": ["111", "222"]
}, {
"port": 80,
"nickname": "fff",
"date": "2022-08-29",
"address": ["333", "444"]
}]
}, {
"name": "bbb",
"ports": [{
"port": 2443,
"nickname": "hhh",
"date": "2021-08-29",
"address": ["999"]
}, {
"port": 280,
"nickname": "jjj",
"date": "2020-08-29",
"address": ["111111"]
}]
}]
1.2.1 模糊查詢
查詢nickname like '%jj%'
可以看出有兩層JSONArray結(jié)構(gòu)
SELECT * FROM "public"."tf_low_data_testUser" WHERE EXISTS (
SELECT 1
FROM jsonb_array_elements("ports") as arr1(obj1)
CROSS JOIN jsonb_array_elements(obj1->'ports') as arr2(obj2)
WHERE (obj2->>'nickname') like '%gg%'
);
當(dāng)該層級類型是數(shù)組就添加
CROSS JOIN jsonb_array_elements(obj1->'ports') as arr2(obj2)
1.2.2 模糊查詢 NOT
SELECT * FROM "public"."tf_low_data_testUser" WHERE NOT EXISTS (
SELECT 1
FROM jsonb_array_elements("ports") as arr1(obj1)
CROSS JOIN jsonb_array_elements(obj1->'ports') as arr2(obj2)
WHERE (obj2->>'nickname') like '%gg%'
);
查的是另外三條數(shù)據(jù)源
1.2.3 等值匹配
SELECT * FROM "public"."tf_low_data_testUser" WHERE EXISTS (
SELECT 1
FROM jsonb_array_elements("ports") as arr1(obj1)
CROSS JOIN jsonb_array_elements(obj1->'ports') as arr2(obj2)
WHERE (obj2->>'port')::int = 80
);
如果是數(shù)字類型后面需要轉(zhuǎn)換
::int，因為->>操作符的返回類型是text
1.2.4 等值匹配 NOT
SELECT * FROM "public"."tf_low_data_testUser" WHERE NOT EXISTS (
SELECT 1
FROM jsonb_array_elements("ports") as arr1(obj1)
CROSS JOIN jsonb_array_elements(obj1->'ports') as arr2(obj2)
WHERE (obj2->>'port')::int = 80
);
查的是另外三條數(shù)據(jù)源
1.2.5 時間搜索
SELECT * FROM "public"."tf_low_data_testUser" WHERE EXISTS (
SELECT 1
FROM jsonb_array_elements("ports") as arr1(obj1)
CROSS JOIN jsonb_array_elements(obj1->'ports') as arr2(obj2)
WHERE (obj2->>'date') BETWEEN '2022-08-13' AND '2023-08-17'
);
1.2.6 時間搜索 NOT
查的是另外三條數(shù)據(jù)源
1.2.7 在列表
SELECT * FROM "public"."tf_low_data_testUser" WHERE EXISTS (
SELECT 1
FROM jsonb_array_elements("ports") as arr1(obj1)
CROSS JOIN jsonb_array_elements(obj1->'ports') as arr2(obj2)
WHERE (obj2->>'nickname') IN ('ggg','fff')
);
1.2.8 在列表 NOT
查的是另外三條數(shù)據(jù)源
1.2.9 包含
SELECT * FROM "public"."tf_low_data_testUser" WHERE EXISTS (
SELECT 1
FROM jsonb_array_elements("ports") as arr1(obj1)
CROSS JOIN jsonb_array_elements(obj1->'ports') as arr2(obj2)
WHERE (obj2->'address') @> '["444"]'
);
此時使用的操作符是
->，返回值是jsonb類型
1.2.10 包含 NOT
查的是另外三條數(shù)據(jù)源
二. Postgresql 9.5和以上版本
也兼容上面的JSON查詢
2.1 模糊查詢
使用函數(shù)
jsonb_path_exists（可以指定JSON路徑，如果是數(shù)組添加[*]）的正則查詢達(dá)到模糊查詢的效果
-- like '%ggg%'
SELECT * FROM "public"."tf_low_data_testUser" WHERE jsonb_path_exists("ports", '$[*].ports[*].nickname ?(@ like_regex "g")')
-- 左模糊 like '%g'
SELECT * FROM "public"."tf_low_data_testUser" WHERE jsonb_path_exists("ports", '$[*].ports[*].nickname ?(@ like_regex "g$")')
-- 右模糊 like 'g%'
SELECT * FROM "public"."tf_low_data_testUser" WHERE jsonb_path_exists("ports", '$[*].ports[*].nickname ?(@ like_regex "^g")')
-- 等值匹配
SELECT * FROM "public"."tf_low_data_testUser" WHERE jsonb_path_exists("ports", '$[*].ports[*].nickname ?(@ like_regex "^ggg$")')
同樣支持
NOT文章來源地址http://www.zghlxwxcb.cn/news/detail-691080.html
2.2 等值匹配
SELECT * FROM "public"."tf_low_data_testUser" WHERE jsonb_path_exists("ports", '$[*].ports[*].nickname ?(@ == "fff")')
同樣支持
NOT
2.3 時間搜索
SELECT * FROM "public"."tf_low_data_testUser" WHERE jsonb_path_exists("ports", '$[*].ports[*].date ?(@ >= "2022-01-02" && @ <= "2023-08-02")')
同樣支持
NOT
2.4 在列表
SELECT * FROM "public"."tf_low_data_testUser" WHERE jsonb_path_exists("ports", '$[*].ports[*].nickname ?(@ == "ggg" || @ == "fff")')
同樣支持
NOT
2.5 包含
和
等值匹配一樣
SELECT * FROM "public"."tf_low_data_testUser" WHERE jsonb_path_exists("ports", '$[*].ports[*].address ?(@ == "222")')
文章來源：http://www.zghlxwxcb.cn/news/detail-691080.html
同樣支持
NOT
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