MySQL fully parses json/ arrays

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mysql analysis json Array

Go straight up demo

The following demo It can be copied directly to sql function

Let's analyze

mysql json The string is parsed into the corresponding field

resolvent ：JSON_EXTRACT

resolvent ：REPLACE

mysql analysis json Array

mysql stay 5.7 Start supporting json Parsed You can also parse arrays ！

Go straight up demo　SELECT Substr(col, 2, Length(col) - 2), Length(col) FROM (SELECT Json_extract(Json_extract(Json_extract(state, "$.tpl"),"$.items" ), "$[0].url") AS col FROM page ORDER BY id DESC LIMIT 100) t;

JSON_EXTRACT Can be parsed sql , tpl You are the one json Of key value

If it's an array , use $[*].url  perhaps $[0].url  Get all of value Or some subscript url

The following demo It can be copied directly to sql function 　select JSON_EXTRACT(JSON_EXTRACT(JSON_EXTRACT('{"tpl":{"items":[{"type":"image","config":{"expandable":true,"linkAble":true},"url":"https://fs.esf.fangdd.net/test/FiZ0OtkhTZoD7fOtkp55SnuLGiKu.png?imageView2/2/w/750","id":1542348252537},{"type":"image","config":{"expandable":true,"linkAble":true},"url":"https://fs.esf.fangdd.net/test/FlR1VDQWEzD406NosLFrJUez4g_X.png?imageView2/2/w/750","id":1542348263477},{"type":"image","config":{"expandable":true,"linkAble":true},"url":"https://fs.esf.fangdd.net/test/FhMuYkWvnoMbv8I1dlQbm1KaX5Kn.png?imageView2/2/w/750","id":1542348269599},{"type":"image","config":{"expandable":true,"linkAble":true},"url":"https://fs.esf.fangdd.net/test/FlgR4IUNElPbcgjN2re_9A8jX30v.png?imageView2/2/w/750","id":1542348276124},{"type":"image","config":{"expandable":true,"linkAble":true},"url":"https://fs.esf.fangdd.net/test/FpXF8ETHxU8aqriiKbsYDjnu2Xd5.png?imageView2/2/w/750","id":1542348282561},{"type":"image","config":{"expandable":true,"linkAble":true},"url":"https://fs.esf.fangdd.net/test/FkUz5m7Jd6kE2slSyreDucozc3XH.png?imageView2/2/w/750","id":1542348288150,"link":"http://www.baidu.com"}],"bottomItems":[],"title":"demo2","description":"","wxLogo":"","bodyStyleInline":{},"bg":"","bgType":"","bottomStyleInline":{},"bottomBg":"","bottomBgType":"","uuid":"aaef8dfe-256a-4559-aec9-95d1fcdcf830","activeItemsName":"items","activeImgType":"","authInfo":{"role_list":[{"name":"test","access_key_list":[]},{"name":" Reviewers ","access_key_list":[]}],"city_list":[],"userId":3108779,"userName":"zhangyusheng","email":"[email protected]","mobile":"123123","trueName":" Zhang Yusheng ","isEmployee":true}}}', "$.tpl"), "$.items"), "$[0].url"); Let's analyze

original json by

{ "tpl":{ "items":[ { "type":"image", "config":{ "expandable":true, "linkAble":true }, "url":"https://fs.esf.fangdd.net/test/FiZ0OtkhTZoD7fOtkp55SnuLGiKu.png?imageView2/2/w/750", "id":1542348252537 }, { "type":"image", "config":{ "expandable":true, "linkAble":true }, "url":"https://fs.esf.fangdd.net/test/FlR1VDQWEzD406NosLFrJUez4g_X.png?imageView2/2/w/750", "id":1542348263477 }, { "type":"image", "config":{ "expandable":true, "linkAble":true }, "url":"https://fs.esf.fangdd.net/test/FhMuYkWvnoMbv8I1dlQbm1KaX5Kn.png?imageView2/2/w/750", "id":1542348269599 }, { "type":"image", "config":{ "expandable":true, "linkAble":true }, "url":"https://fs.esf.fangdd.net/test/FlgR4IUNElPbcgjN2re_9A8jX30v.png?imageView2/2/w/750", "id":1542348276124 }, { "type":"image", "config":{ "expandable":true, "linkAble":true }, "url":"https://fs.esf.fangdd.net/test/FpXF8ETHxU8aqriiKbsYDjnu2Xd5.png?imageView2/2/w/750", "id":1542348282561 }, { "type":"image", "config":{ "expandable":true, "linkAble":true }, "url":"https://fs.esf.fangdd.net/test/FkUz5m7Jd6kE2slSyreDucozc3XH.png?imageView2/2/w/750", "id":1542348288150, "link":"http://www.baidu.com" } ], "bottomItems":[ ], "title":"demo2", "description":"", "wxLogo":"", "bodyStyleInline":{ }, "bg":"", "bgType":"", "bottomStyleInline":{ }, "bottomBg":"", "bottomBgType":"", "uuid":"aaef8dfe-256a-4559-aec9-95d1fcdcf830", "activeItemsName":"items", "activeImgType":"", "authInfo":{ "role_list":[ { "name":"test", "access_key_list":[ ] }, { "name":" Reviewers ", "access_key_list":[ ] } ], "city_list":[ ], "userId":3108779, "userName":"zhangyusheng", "email":"[email protected]", "mobile":"23123", "trueName":" Zhang Yusheng ", "isEmployee":true } }}

$.tpl Is to get tpl This key key

$[0].url Is to get [{url:1},{url:2}] Of the first object in this array url value That is to say 1

mysql json The string is parsed into the corresponding field

Field name ：mobile , Content ：{"contactName":" paragraph XX","contactJobTitle":" To be confirmed ","contactMobile":"131XXXXXXX"}.

resolvent ：JSON_EXTRACT

perform SQL：

Query results ：

The result is quoted , Can't really use .

resolvent ：REPLACE

perform SQL：

Query results ：

Problem solving .

sql sentence ：

SELECTREPLACE (JSON_EXTRACT (mobile, '$.contactName'),'"','') AS 'contactName',REPLACE (JSON_EXTRACT (mobile, '$.contactMobile'),'"','') AS 'contactMobile',REPLACE (JSON_EXTRACT (mobile, '$.contactJobTitle'),'"','') AS 'contactJobTitle'FROMcscw_clientWHEREid = 'XXXXXXXXXXXXXXX'

The above is personal experience , I hope I can give you a reference , I also hope you can support the software development network .