Retry Promise on error - Typescript - node.js

Question

I have a nodeJS application using the mssql driver to interact with my SQL database. I want to have a single function to get a value from a database, however, on first use, the table won't exist, so if there is a specific error, I want to call my createValue() function. The code below works, but I have to call it twice to get the value. Basically, if the condition in the .catch is met, I would like to call the Request again. Is there a neat way of doing this?
var value;
new sql.Request().query('select * from _table')
.then(function (recordset) {
value = recordset;
})
.catch(function (err) {
console.log("Query Error: " + err);
if (err.message == "Invalid object name '_table") {
createValue();
}
})
Update:
I now have the following function, but how should I best get it to return recordset?
function getData() {
sql.connect("mssql://username:password#localhost/mytestdatabase").then(function () {
return new sql.Request().query('select * from _table')
.then(function (recordset) {
console.log(recordset); // <-- THIS IS WHAT I WANT TO RETURN
})
.catch(function (err) {
console.log("Query Error: " + err);
if (err.message == "Invalid object name '_table") {
updateValue();
return getData();
}
return null;
})
}).catch(function (err) {
console.log("Connection Error: " + err);
})
};

Answer 1

You can wrap it in a function, which you can then call recursively.
I'm assuming createValue() is synchronous.
function getData(){
return new sql.Request().query('select * from _table')
.catch(function (err) {
if (err.message == "Invalid object name '_table") {
createValue();
return getData();
}
throw err;
});
}
...
var resultsetPromise = getData();
resultsetPromise.then( function(resultset){
// do something with your data
}).catch( function(err){
console.log("Query Error: " + err);
});