node js + async parallel + function call method not working - node.js

Question

I have functions in different place.(this is common function it will use many place.
So I tried to call the function using async parallel but its not working.
I attached the my code following:L
var userId = 33;
async.parallel({
video(userId, callback) {
callback(null, callback);
},
video1(userId, callback) {
callback(null, callback);
}
}, function(err, results) {
console.log(results);
});
function video (userId, callback) {
client.query("select youtube_id,title,id,thumbnail,search_item from resource order by random() limit 1 ", function(err, video) {
callback(err, video);
});
}
function video1(userId, callback) {
client.query("select youtube_id,title,id,thumbnail,search_item from resource1 order by random() limit 1 ", function(err, video1) {
callback(err, video1);
});
}

Answer 1

The {fnName()} syntax is a function declaration. You want to use a function call ... in fact you can just use async.parallel({video, video1}, (err, results) => console.log(results) to achieve the same effect... except that you also need to pass in userId. So what you actually intend is to call the function rather than declare it:
async.parallel([
callback => video(userId, callback),
]);

Answer 2

You need to pass function references to async.parallel() and you need to pass an array, not an object. You want the code to have this form:
async.parallel([fn1, fn2], finalCallback);
See the async.parallel() doc here for specific examples of the syntax you want to use.
Where fn1, fn2 and finalCallback are all function references that can be called by the async.parallel() infrastructure, not something you call yourself.
Change your code to this:
async.parallel([
function(callback) {
client.query("select youtube_id,title,id,thumbnail,search_item from resource order by random() limit 1 ", function(err, video) {
callback(err, video);
}),
},
function(callback) {
client.query("select youtube_id,title,id,thumbnail,search_item from resource order by random() limit 1 ", function(err, video1) {
callback(err, video1);
});
}
], function(err, results) {
console.log(results);
});
Presumably, your two database queries should be different somehow (your code showed them identical).
If your functions are already defined somewhere, then you can pass an anonymous function reference that will call them. You need to do this if your functions don't have the exact same calling convention that async.parallel() requires. You can do that like this:
async.parallel([function(callback) {
video(userId, callback);
}, function(callback) {
video1(userId, callback);
}], function(err, results) {
console.log(results);
});