Nodejs mysql no result
You're receiving an empty array ( [] ) as result of your query, because as you said, your database does not contain any row with name = 'abcd' . ,use this code app.get('/customers', function(req, res) getCustomersQuery(function(err, result) if (err) console.log(err); } res.json( ... ,2016年2月22日 — The query SELECT * FROM products return results when running from MySQL Workbench, but no results from Nodejs MySQL module: ,2017年5月22日 — An additional note: you should't use constructs like -'' +info+ '-'' because they might result in potential sql injections or at least not ... ,You are passing the wrong parameters to validateUser : validateUser(REQ_PARAM_USER, REQ_PARAM_PASSWD, // ... What you really want:,2021年9月15日 — Does anyone know how to check if a NodeJS MySQL result is null/empty? What I'm trying to do is (very succinctly explained) to check if result 5 ... ,2020年12月3日 — But every time I run this query the results array came out to be empty due to which I am unable to login. app.post('/signedin', function(req ... ,Virtually everything in Node.js is asynchronous, and SQL query functions definitely are. You're calling conn.query(query, ... ,Your .each() is not waiting for the query to finish before moving on to the next element. You could use something like async to help manage ...,2021年1月24日 — The query is just count the number of message column in database and print the length. the code: connection.query(SELECT COUNT(message) as ...
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In node.js mysql query, check if no matching found - Stack ...
You're receiving an empty array ( [] ) as result of your query, because as you said, your database does not contain any row with name = 'abcd' . https://stackoverflow.com NodeJs Mysql returns empty result - Stack Overflow
use this code app.get('/customers', function(req, res) getCustomersQuery(function(err, result) if (err) console.log(err); } res.json( ... https://stackoverflow.com Mysql query returns no results when running from Node ...
2016年2月22日 — The query SELECT * FROM products return results when running from MySQL Workbench, but no results from Nodejs MySQL module: https://stackoverflow.com NodeJS mysql if null or empty - Stack Overflow
2017年5月22日 — An additional note: you should't use constructs like -'' +info+ '-'' because they might result in potential sql injections or at least not ... https://stackoverflow.com NodeJS mysql query returns empty result - Stack Overflow
You are passing the wrong parameters to validateUser : validateUser(REQ_PARAM_USER, REQ_PARAM_PASSWD, // ... What you really want: https://stackoverflow.com How can I check if a MySQL result is undefinedempty? - Stack ...
2021年9月15日 — Does anyone know how to check if a NodeJS MySQL result is null/empty? What I'm trying to do is (very succinctly explained) to check if result 5 ... https://stackoverflow.com Nodejs mysql query returning empty result array - Stack ...
2020年12月3日 — But every time I run this query the results array came out to be empty due to which I am unable to login. app.post('/signedin', function(req ... https://stackoverflow.com Node JS MySQL query function not returning result - Stack ...
Virtually everything in Node.js is asynchronous, and SQL query functions definitely are. You're calling conn.query(query, ... https://stackoverflow.com Check in database if no result, then add with node.js-mysql
Your .each() is not waiting for the query to finish before moving on to the next element. You could use something like async to help manage ... https://stackoverflow.com results.length is not give the correct output for MySQL query?
2021年1月24日 — The query is just count the number of message column in database and print the length. the code: connection.query(SELECT COUNT(message) as ... https://stackoverflow.com |