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How to query the value of json in mysql

藏色散人
Release: 2020-10-23 09:54:58
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Mysql method to query the value of json: first open the command window; then execute the SQL statement "SELECT REPLACE(json_extract(push_data,'$.carRenewalInfoVo.licence')..." to query the value of json .

How to query the value of json in mysql

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mysql finds a certain field in json

SELECT json_extract(字段名,'$.json结构') FROM 表名;
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If there are double quotes in json, then the data taken out in this way will also have double quotes. To remove it, use the REPLACE function

For example:

ps_push_data table The data stored in the push_data field is: {"carRenewalInfoVo":{"licence":"Zhejiang AF55Z0"},"code":"1","msg":"success"}

Use sql

SELECT REPLACE(json_extract(push_data,'$.carRenewalInfoVo.licence'),'"','') FROM ps_push_data;
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What is taken out is: Zhejiang AF55Z0

It is worth noting that only MySQL5.7 and above versions support the operation of json data

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