How to retrive data from multiple tables. Using node js and mysql? - mysql

Question

I have two tables which are give in at this fiddle.
http://sqlfiddle.com/#!9/d37102
I want to retrieve data from the table currently I am doing this way
mysqlConnection.query("SELECT* FROM wallet WHERE user_id = ? ORDER by date",authData.id,(err,rows,fields)=>{
if(!err){
res.json({
message :"Statement",
rechargeDetails : rows,
transactionDetail://// TODO: Transaction details
});
}
else console.log(err);
});
That is correctly retrieving the JSON data in at this format over here
{
"message": "Statement",
"rechargeDetails": [
{
"id": 17,
"amount": 50,
"type": "CREDIT",
"pg_id": "xxxxq123",
"comments": null,
"intrument_type": "REFUND",
"user_id": 1,
"date": "2020-04-17T18:30:00.000Z"
},
{
"id": 18,
"amount": 50,
"type": "CREDIT",
"pg_id": "xxxxq123",
"comments": null,
"intrument_type": "REFUND",
"user_id": 1,
"date": "2020-04-17T18:30:00.000Z"
}
]
}
I want to get transaction table data also like this
{
"message": "Statement",
"rechargeDetails": [
{
"id": 17,
"amount": 50,
"type": "CREDIT",
"pg_id": "xxxxq123",
"comments": null,
"intrument_type": "REFUND",
"user_id": 1,
"date": "2020-04-17T18:30:00.000Z"
},
{
"id": 18,
"amount": 50,
"type": "CREDIT",
"pg_id": "xxxxq123",
"comments": null,
"intrument_type": "REFUND",
"user_id": 1,
"date": "2020-04-17T18:30:00.000Z"
}
"transactionDetails": [
{
"id": 17,
"amount": 50,
"tax": "CREDIT",
"discount": "xxxxq123",
"adjustment": null,
"refrence_id": "REFUND",
"payment_ref_id": 1,
xxxxxx
xxxxxxxxxx
}
],
}
How could i do that? Is there a way to do this?

Answer 1

mysqlConnection.query("SELECT * FROM wallet WHERE user_id = ? ORDER by date",authData.id,(err,rows,fields)=>{
if(!err){
mysqlConnection.query("SELECT * FROM transaction WHERE user_id = ? ORDER by date",authData.id,(errTarn,rowsTarn,fieldsTarn)=>{
if(!errTarn){
res.json({
message :"Statement",
rechargeDetails : rows,
transactionDetail: rowsTarn
});
}
});
}
else console.log(err);
});
OR YOU CAN USE MULTIPLE QUERY
enable it for your connection
var connection = mysql.createConnection({multipleStatements: true});
Now the code will be
connection.query('SELECT * FROM wallet WHERE user_id = ? ORDER by date; SELECT * FROM transaction WHERE user_id = ? ORDER by date', [authData.id, authData.id], function(err, results) {
if (err) throw err;
if(!err){
res.json({
message :"Statement",
rechargeDetails : results[0],
transactionDetail: results[1]
});
}
});

Answer 2

I have zero knowledge with NODE but I think something like this should work properly
mysqlConnection.query("SELECT* FROM wallet WHERE user_id = ? ORDER by date",authData.id,(err,rows,fields)=>{
if(!err){
res.json({
message :"Statement",
rechargeDetails : rows,
transactionDetail: mysqlConnection.query("__SELECT_TRANSACTIONS_QUERY__",authData.PARAMETER_NEEDED,(err,rows,fields)=>{
if(!err){
// return your rows
}
});
});
} else {
console.log(err);
}
});