How to run multiple queries simultaneously and save the results to different variables when you aren-CodePudding

I have 2 arrays of queries, but I'm not sure how many queries I have in each array until runtime. I would like to save the results from each array of queries to a variable (e.g. queries from the 1st array should be saved to the 1st array and queries from the 2nd array should be saved to the 2nd). I was going to use promise.all() but I don't know how to assign only some of the responses to 1 array and some to the other. Something like the following:

async function runQueriesAndGetResponse() {
    var queryArray1 = [query, anotherQuery, 3rdQuery,...]
    var queryArray2 = [4thQuery, 5thQuery, 6thQuery,...]
    return await Promise.all(queryArray1.concat(queryArray2))
}

var [responses1, responses2] = await runQueriesAndGetResponse()
// Doesn't work because responses1 and responses2 will only have the 1st and 2nd response respectively

CodePudding user response：

You can return an array from your function, where each element is the Promise.all of each of your queryArray

Basically the return value of your function should be return [await Promise.all(queryArray1), await Promise.all(queryArray2)];