elasticsearch aggregation PHP - elasticsearch

Question

i am trying to get the unique values from my elasticsearch database.
So i want the unique names from my elasticsearch database.
So i am aggregation like so ---
$paramss = [
'index' => 'myIndex',
'type' => 'myType',
'ignore_unavailable' => true,
'ignore' => [404, 500]
];
$paramss['body'] = <<<JSON
{
"size": 0,
"aggs" : {
"langs" : {
"terms" : { "field" : "name" }
}
}}
JSON;
$results = $client->search($paramss);
print_r(json_encode($results));
i get the result like so---
{
took: 3,
timed_out: false,
_shards: {
total: 5,
successful: 5,
failed: 0
},
hits: {
total: 1852,
max_score: 0,
hits: [
]
},
aggregations: {
langs: {
buckets: [
{
key: "aaaa.se",
doc_count: 430
},
{
key: "bbbb.se",
doc_count: 358
},
{
key: "cccc.se",
doc_count: 49
},
{
key: "eeee.com",
doc_count: 46
}
]
}
}
}
But the problem is i am not getting all the unique values, I am getting only 10 values, which is default value for elasticsearch query.
So how can i change the query size !!!
i tried like so---
$paramss = [
'index' => 'myIndex',
'type' => 'myType',
'size' => 1000,
'ignore_unavailable' => true,
'ignore' => [404, 500]
];
which returns me some weird documents.
So do anyone knows the solution of this problem.
How can i get all the unique names from my elasticsearch database, can someone help me to fix this problem.

Answer 1

You are also doing everuthing right, except you the size.
The "size": 0 should come after the targeted field's name.
$client = new Elasticsearch\Client($params);
$query['body'] = '{
"aggs" : {
"all_sources" : {
"terms" : {
"field" : "source",
"order" : { "_term" : "asc" },
"size": 0
}
}
}
}';

Answer 2

You need to put size parameter inside terms:
{
"aggs" : {
"langs" : {
"terms" : {
"field" : "name",
"size": 0
}
}
}}
Link to documentation where you can find more info:
https://www.elastic.co/guide/en/elasticsearch/reference/current/search-aggregations-bucket-terms-aggregation.html