Elasticsearch equivalent SQL In Query with multiple fields - elasticsearch

Question

I am looking for a Elasticsearch equivalent SQL In query like below
SELECT * from table
WHERE (section , class) in (('a','1'), ('b', '2'))
I know how to use In query for single fields in elasticsearch
SELECT * FROM table WHERE class IN ('1', '2');
Elasticsearch query -
{
"query" : {
"bool" : {
"filter" : {
"terms" : {
"class" : ['1', '2']
}
}
}
}
}
My actual problem statement -
Sample index data :
[
{
"_index" : "some_index",
"_type" : "_doc",
"_id" : "41",
"_score" : 1.0,
"_source" : {
"class" : "1",
"section" : "a",
"attribute_3" : "hello world"
},
{
"_index" : "some_index",
"_type" : "_doc",
"_id" : "42",
"_score" : 1.0,
"_source" : {
"class" : "2",
"section" : "a",
"attribute_3" : "hello world"
},
{
"_index" : "some_index",
"_type" : "_doc",
"_id" : "43",
"_score" : 1.0,
"_source" : {
"class" : "1",
"section" : "b",
"attribute_3" : "hello world"
},
{
"_index" : "some_index",
"_type" : "_doc",
"_id" : "44",
"_score" : 1.0,
"_source" : {
"class" : "2",
"section" : "b",
"attribute_3" : "hello world"
},
{
"_index" : "some_index",
"_type" : "_doc",
"_id" : "45",
"_score" : 1.0,
"_source" : {
"class" : "3",
"section" : "b",
"attribute_3" : "hello world"
}
]
I want to use a filter on data where (class is 1 AND section is a) OR (class is 2 AND section is b)
Note : I'm preparing this 'OR' combination dynamically and its going to be more than two combinations.
My expected search result should be -
[{
"_index" : "some_index",
"_type" : "_doc",
"_id" : "41",
"_score" : 1.0,
"_source" : {
"class" : "1",
"section" : "a",
"attribute_3" : "hello world"
},
{
"_index" : "some_index",
"_type" : "_doc",
"_id" : "44",
"_score" : 1.0,
"_source" : {
"class" : "2",
"section" : "b",
"attribute_3" : "hello world"
}]

Answer 1

This would translate to:
{
"query": {
"bool": {
"should": [
{
"bool": {
"must": [
{
"term": {
"a": 0
}
},
{
"term": {
"b": 9
}
}
]
}
},
{
"bool": {
"must": [
{
"term": {
"a": 0
}
},
{
"term": {
"b": 4
}
}
]
}
}
]
}
}
}
but if a is always 0 as you mentioned in the example the query can be rephrased to:
{
"query": {
"bool": {
"must": [
{
"term": {
"a": 0
}
},
{
"terms": {
"b": [
9,
4
]
}
}
]
}
}
}