[英]SQl not accepting insert query in node js throws ER_BAD_FIELD_ERROR
const axios = require('axios');
const mysql = require('mysql');
var con = mysql.createConnection({
host: 'localhost',
user: 'root',
password: 'YEX8QHOG@a',
database: 'test',
});
con.connect((err) => {
if (err) {
throw err;
}
console.log('Connected...');
});
let createTable = 'CREATE TABLE employee(id VARCHAR(5),empname VARCHAR(30),empsal VARCHAR(30),empage VARCHAR(30))';
con.query(createTable, function (err, result, feilds) {
if (err) {
throw err;
}
console.log('Db Created');
console.log(result);
});
function setData(id, empname, empsal, empage) {
let query = `INSERT INTO employee (id,empname,empsal,empage) VALUES (${id},${empname},${empsal},${empage})`;
con.query(query, function (err, result) {
if (err) {
throw err;
} else {
console.log('Data insert', id);
console.log(result);
}
});
}
async function putData() {
let url = 'http://dummy.restapiexample.com/api/v1/employees';
let data = await axios.get(url);
let dataarr = await data.data.data;
console.log(dataarr);
setData('1', 'Karan', '36000', '20');
dataarr.map((emp) => {
setData(emp.id, emp.employee_name, emp.employee_salary, emp.employee_age);
console.log(typeof emp.id, typeof emp.employee_name, typeof emp.employee_salary, typeof emp.employee_age);
});
}
putData();
code: 'ER_BAD_FIELD_ERROR', errno: 1054, sqlMessage: "Unknown column 'Karan' in 'field list'", sqlState: '42S22', index: 0, sql: 'INSERT INTO employee (id,empname,empsal,empage) VALUES (1,Karan,36000,20)'
代码:'ER_BAD_FIELD_ERROR',errno:1054,sqlMessage:“'字段列表'中的未知列'Karan'”,sqlState:'42S22',索引:0,sql:'INSERT INTO员工(id,empname,empsal,empage)值 (1,Karan,36000,20)'
when I pass values they throw this error for employee name当我传递值时,他们会为员工姓名抛出此错误
I'd suggest using parameters, this has other benefits too (especially the prevention of SQL injection),我建议使用参数,这也有其他好处(特别是防止 SQL 注入),
This is documented at: mysql#escaping-query这记录在: mysql#escaping-query
You can change the function setData easily to do this:您可以轻松更改 function setData 来执行此操作:
function setData(id, empname, empsal, empage) {
let query = `INSERT INTO employee (id,empname,empsal,empage) VALUES (?,?,?,?)`;
let parameters = [id, empname, empsal, empage];
con.query(query, parameters, function (err, result) {
if (err) {
throw err;
} else {
console.log('Data insert', id);
console.log(result);
}
});
}
let query = `INSERT INTO employee (id,empname,empsal,empage) VALUES ('${id}','${empname}','${empsal}','${empage}')`;
use quotes for any kind of data '${id}'对任何类型的数据 '${id}' 使用引号
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