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Return array of values when querying single column instead of array of objects

When using the query builder in typeorm I do a select of a single column and I would like to get an array of values (In my particular case it would be an array of strings) but instead I get an array of objects where the key is the column name and the value is the row value.
For example the code:
this.createQueryBuilder('subscriptions')
.select('id')
.getRawMany()
Would return something like:
[{id:1},{id:2},{id:3}]
Instead of a simple array like [1,2,3]
Is there any way to obtain this array from the query? or the only way is to map the result of the query to extract the value?

Only option you have is map
const arrayResults = queryResults.map(r => r.id);

Checking for existing array in array before pushing

I missing something when trying to push to an array while preventing duplicates.
I keep figuring out code that will push every occurence of an employee to the new employees array but I cannot figure out how to only push an unique list.
My final array is a 2d array so that can be setValues() back into a column in the Google sheet.
function queryEmployees(){
var sh = SpreadsheetApp.getActiveSpreadsheet().getSheets()[0];
var lRow = sh.getLastRow();
var data = sh.getRange(1,1,lRow,2).getValues();
var employees = [];
for(i=0;i<data.length;i++){
if(data[i][0]==='Team member evaluated'){
if(employees.indexOf([data[i][1]])===-1){
employees.push([data[i][1]]);
}
}
}
Logger.log(employees);
Logger.log(employees.length);
SpreadsheetApp.getActiveSpreadsheet().getSheets()[1]
.getRange(1,1,employees.length,1).setValues(employees);
}

IndexOf does not work with objects in arrays without your rewriting the function or writing your own. It works fine with strings, though. So a simple fix is to create a parallel array of strings, which allows us to keep your code almost intact. Thus, add,
var employeesIndex=[];
after your
var employees=[]
change the condition on your inner "if" clause to
(employeesIndex.indexOf(data[i][1])===-1)
and within that if block add a line to update the index
employeesIndex.push(data[i][1]);
That way the index tracks duplicates for you while your employees array contains arrays like you need.

How can I treat an imported value like an array?

I'm trying to generate a google form that has a few hundred options in a drop down.
I have all the name values in a single cell formatted as follows:
'user1','user2','user3'
It is set as in the code as follows:
var studentNames = SpreadsheetApp.openById('REDACTED').getSheetByName('Student List').getRange(3,3).getValues();
When I use this variable as shown below it treats it all as a singe value instead of an array.
.setChoiceValues([studentNames])
Any help in where to go from here?

is it a string of words with single quotes and a comma to separate them? if so, you can just do a split on the comma
var s = data
var arr = s.split(",");
and now you will have an array of strings. not sure if this answers your question.

Thanks everyone for getting me pointed in the right direction.
Turns out split was just part of the answer, I had to turn it into a string first.
.toString().split(",");

getValues() returns an object, so you need to interact with it to get the string of values for your array.
Given you are selecting just one cell and so don't need to iterate through the object, try something like this:
var studentNamesObj = SpreadsheetApp.openById('REDACTED').getSheetByName('Student List').getRange(3,3).getValues();
var studentNames = studentNamesObj[0][0].split(",");

How can I make sure Javascript array containing values with certain character remain unaltered, while I work on it?

Suppose I have an Javascript array,
var example = [and, there,sharma<br, />, ok, grt]
Now I want to randomly delete some array values - but not those values which have
<br
in them, in the above example, I want to make sure
"sharma<br" is not deleted.
I also do not want to delete "/>".
Can anyone help me. I would really appreciate the answer.

First of all, that is not a valid array, unless you are missing the string quotes. Anyway, what you are searching for is Array.Filter. In your case :
var filtered = example.filter(v => v.indexOf("<br") != -1 || v.indexOf("/>") != -1)

If I have understood the problem correctly, then you want to keep those entries in the array which have substrings "<br" and "/>"
If thats the case, you can try using javascript string method includes() to see if a string contains a particular substring.

JavaScript array must be created as below
var example = ["and"," there"",sharma<br","/>","ok"," grt"];
Using splice method , to delete the array values specifying the index positions.
array splice() method changes the content of an array, adding new elements while removing old elements.
Syntax
Its syntax is as follows −
array.splice(index, howMany, [element1][, ..., elementN]);
Parameter Details
index −
Index at which to start changing the array.
howMany −
An integer indicating the number of old array elements to remove. If howMany is 0, no elements are removed.
element1, ..., elementN −
The elements to add to the array. If you don't specify any elements, splice simply removes the elements from the array.
Return Value
Returns the extracted array based on the passed parameters.
var removed = arr.splice(2, 2);
This would remove your suggested output to be my assumption .

javascript array show undefined when escape one index

I face a problem when tried to assign a value with a specific index. suppose I have javascript variable like
var track = new Array();
Now I assign a value for a specific index like-
track[10]= "test text";
now array has one value and it's length would be 1. But the main problem is it show it's length is 11.
alert(track.length); // 11 but I expect 1
and if I print its value then it shows like--
alert(track); // ,,,,,,,,,test text
and if I console this array then it show like below--
console.log(track); // undefined,undefined,undefined,undefined,.....,test text
I am very much confused because I assign only one value but it show 11. How it assign it's value and what characteristics array variable shows. Can anyone explain me and how to get its length 1 using below code--
var track = new Array();
track[10]= "test text";
alert(track); // test text
alert(track.length); // 1
console.log(track); // test text

The Array object automatically fills in the missing indexes. The reason it gives length 11 is because the index starts at 0.
If you are wanting to use key-value just use an object.
var track = {};
It will not have a .length value however.

javascript automatically fills in the array to push the element you want. You can get the "true" count by doing this:
track.filter(Boolean).length
However note that this will only "work" if you do not have any other elements that resolve to "false" value (eg. empty strings or setting them to false) so if you want to this, make sure you never actually set any other array elements to a falsy value so that you can use this convention. For example if you want to set other array values to a falsy value, use something like -1 instead as the thing to check.

Since you're setting the value for 10th position it's showing array size of 11
You must start from 0th position..
var track = new Array();
track[0]= "test text";
alert(track); // test text
alert(track.length); // 1
console.log(track); // test text
Try this

For such kind of operations i generally prefer the library called Underscore.js.
It abstracts array manipulations. You might want to checkout the compact method
Compact works like this:
_.compact([undefined, undefined, undefined, "test test"]) as ["test test"]
Then you can check the length of the returned array.
Though a simple approach is
filter(Boolean).length
But if you want to use the array then you might like underscore.