I need to replace the character \\ of a string and read with JSON_EXTRACT - mysql

Question

When saving the JSON object in Mysql with JSON.stringify it puts the character "\" in the string. I am building a VIEW and I need to separate the data with json_extract, for that I used the MySql REPLACE command but the return is null.
EDITED
JSON IN FIELD "DADOS" (LONGTEXT)
{
"pessoal":"[{\"nome\":\"Marie Luiza Novaes\",\"nascimento\":\"1994-06-20\",\"civil\":\"Casado(a)\",\"sexo\":\"F\",\"rg\":\"469326293\",\"cpf\":\"06649073504\"}]",
"contato":[],
"interesse":[],
"adicional":[],
"profissional":[],
"academico":[],
"anotacoes":[],
"extras":"[]"
}
1 - GET NOME
SELECT
json_extract (REPLACE(dados,'\\"','"'), '$.pessoal[0].nome') dados
FROM
cadastro
2 - GET NOME
SELECT
json_extract (REPLACE(dados,'\\',''), '$.pessoal[0].nome') dados
FROM
cadastro
TEST

Answer 1

I see multiple problems with your current approach. First, the JSON literal text in your column appears to be somewhat malformed. The JSON array does not take double quotes, because it is part of the JSON structure. Second, the JSON path syntax you are using is also off. The following exact setup is working for me:
WITH cadastro AS (
SELECT '{"pessoal":[{"nome":"Marie Luiza Novaes","nascimento":"1994-06-20","civil":"Casado(a)","sexo":"F","rg":"469326293","cpf":"06649073504"}],
"contato":[],
"interesse":[],
"adicional":[],
"profissional":[],
"academico":[],
"anotacoes":[],
"extras":[]}' AS dados
)
SELECT
JSON_EXTRACT(dados, '$.pessoal[0].nome') dados
FROM cadastro;
Demo
The output from this query is "Marie Luiza Novaes".