Elasticsearch [Query Bool Must Match] performs OR operation instead of AND - php

Question

I'm trying to perform a basic login operation where my view (front end part) accepts a username and password through a form
So in SQL, I must have an example query:
SELECT * FROM users WHERE username = $_POST['username'] AND password = $_POST['password'];
According to the official documentation of Elasticsearch PHP API, it must go like this:
$params = [
'index' => 'myIndex',
'type' => 'myType',
'body' => [
'query' => [
"bool" => [
"must" => [
"match" => [
"username" => 'email#email.com',
],
"match" => [
"password" => 'mypassword',
],
]
]
]
]
];
Unfortunately, it is displaying A LOT of documents so I presumed it's performing the OR operator instead of matching them together
FYI, if you would ever wonder why would there be so many documents displayed according to the "hits" property above, there are literally many user documents with the same password
Main Question
Is there any proper ES query to properly match my username AND password so I could only retrieve one document? I've been searching through with the official documentation, but nothing succeeds the desired output
Thank you very much!

Answer 1

You're almost there. You need to enclose your match queries in one more array, otherwise your bool/must becomes an associative array and that's not what you want (i.e. the second match filter gets discarded).
$params = [
'index' => 'myIndex',
'type' => 'myType',
'body' => [
'query' => [
"bool" => [
"must" => [
--> [
"match" => [
"username" => 'email#email.com',
]
--> ],
--> [
"match" => [
"password" => 'mypassword',
]
]
--> ]
]
]
]
];

Answer 2

With the help of sir Val, I was able to formulate a technique to try work-arounds for my query, and was able to display the result with the following:
$params = [
'index' => $index,
'type' => 'index',
'size' => 250,
'body' => [
'query' => [
'bool' => [
'must' => [
[
"match" => [
"usr_username" =>
[
"query" => $username,
"operator" => "and"
]
]
],
[
"match" => [
"usr_password" => [
"query" => $password,
"operator" => "and"
]
]
]
]
]
]
]
];