Elasticsearch: has_child with outer join-like behavior
My Elasticsearch 6.x index contains documents of type "items" (parents) and "colors" (children), linked by "item"
{"item": "a", "type": "items"},
{"item": "b", "type": "items"},
{"item": "c", "type": "items"},
{"item": "d", "type": "items"},
{"item": "a", "color": "white", "type": "colors"}
{"item": "a", "color": "red", "type": "colors"}
{"item": "a", "color": "yellow", "type": "colors"}
{"item": "a", "color": "green", "type": "colors"}
{"item": "a", "color": "black", "type": "colors"}
{"item": "b", "color": "red", "type": "colors"}
{"item": "b", "color": "yellow", "type": "colors"}
{"item": "b", "color": "green", "type": "colors"}
{"item": "b", "color": "black", "type": "colors"}
{"item": "c", "color": "white", "type": "colors"}
{"item": "c", "color": "red", "type": "colors"}
{"item": "c", "color": "yellow", "type": "colors"}
{"item": "c", "color": "green", "type": "colors"}
{"item": "d", "color": "red", "type": "colors"}
{"item": "d", "color": "yellow", "type": "colors"}
{"item": "d", "color": "green", "type": "colors"}
Here items can have values a, b, c, d.
They can be one of the following color: white, yellow, red, green, black.
I am trying to write a single query that would return documents for type "items" that can be "white", but not "black" or "black", but not "white", or neither "white" nor "black". Given data presented above, this query would return:
{"item": "b", "type": "items"} // "black", but no "white"
{"item": "c", "type": "items"} // "white", but no "black"
{"item": "d", "type": "items"} // no "white", and no "black"
Query I tried:
{
"query": {
"bool": {
"must_not": [
{
"has_child": {
"max_children": 2147483647,
"min_children": 0,
"query": {
"bool": {
"must": [
{
"term": {
"color": {
"value": "black"
}
}
}
]
}
},
"type": "colors"
}
},
{
"has_child": {
"max_children": 2147483647,
"min_children": 0,
"query": {
"bool": {
"must": [
{
"term": {
"color": {
"value": "white"
}
}
}
]
}
},
"type": "colors"
}
}
]
}
}
}
returns all documents because what it does is "NOT(color=WHITE and color=BLACK)" and color=WHITE and color=BLACK is always FALSE, NOT FALSE = TRUE.
In SQL I could do it in one query using self and outer joins, which I can not do in Elastic.
I also tried (color=WHITE and color!=BLACK) OR (color=BLACK and color!=WHITE) OR (color!=WHITE and color!=BLACK), but that does not work, for the same reason.
Would appreciate any help.
elasticsearch
asked Nov 17 '18 at 20:22
user5431794user5431794
134
add a comment |
My Elasticsearch 6.x index contains documents of type "items" (parents) and "colors" (children), linked by "item"
{"item": "a", "type": "items"},
{"item": "b", "type": "items"},
{"item": "c", "type": "items"},
{"item": "d", "type": "items"},
{"item": "a", "color": "white", "type": "colors"}
{"item": "a", "color": "red", "type": "colors"}
{"item": "a", "color": "yellow", "type": "colors"}
{"item": "a", "color": "green", "type": "colors"}
{"item": "a", "color": "black", "type": "colors"}
{"item": "b", "color": "red", "type": "colors"}
{"item": "b", "color": "yellow", "type": "colors"}
{"item": "b", "color": "green", "type": "colors"}
{"item": "b", "color": "black", "type": "colors"}
{"item": "c", "color": "white", "type": "colors"}
{"item": "c", "color": "red", "type": "colors"}
{"item": "c", "color": "yellow", "type": "colors"}
{"item": "c", "color": "green", "type": "colors"}
{"item": "d", "color": "red", "type": "colors"}
{"item": "d", "color": "yellow", "type": "colors"}
{"item": "d", "color": "green", "type": "colors"}
Here items can have values a, b, c, d.
They can be one of the following color: white, yellow, red, green, black.
I am trying to write a single query that would return documents for type "items" that can be "white", but not "black" or "black", but not "white", or neither "white" nor "black". Given data presented above, this query would return:
{"item": "b", "type": "items"} // "black", but no "white"
{"item": "c", "type": "items"} // "white", but no "black"
{"item": "d", "type": "items"} // no "white", and no "black"
Query I tried:
{
"query": {
"bool": {
"must_not": [
{
"has_child": {
"max_children": 2147483647,
"min_children": 0,
"query": {
"bool": {
"must": [
{
"term": {
"color": {
"value": "black"
}
}
}
]
}
},
"type": "colors"
}
},
{
"has_child": {
"max_children": 2147483647,
"min_children": 0,
"query": {
"bool": {
"must": [
{
"term": {
"color": {
"value": "white"
}
}
}
]
}
},
"type": "colors"
}
}
]
}
}
}
returns all documents because what it does is "NOT(color=WHITE and color=BLACK)" and color=WHITE and color=BLACK is always FALSE, NOT FALSE = TRUE.
In SQL I could do it in one query using self and outer joins, which I can not do in Elastic.
I also tried (color=WHITE and color!=BLACK) OR (color=BLACK and color!=WHITE) OR (color!=WHITE and color!=BLACK), but that does not work, for the same reason.
Would appreciate any help.
elasticsearch
asked Nov 17 '18 at 20:22
user5431794user5431794
134
add a comment |
My Elasticsearch 6.x index contains documents of type "items" (parents) and "colors" (children), linked by "item"
{"item": "a", "type": "items"},
{"item": "b", "type": "items"},
{"item": "c", "type": "items"},
{"item": "d", "type": "items"},
{"item": "a", "color": "white", "type": "colors"}
{"item": "a", "color": "red", "type": "colors"}
{"item": "a", "color": "yellow", "type": "colors"}
{"item": "a", "color": "green", "type": "colors"}
{"item": "a", "color": "black", "type": "colors"}
{"item": "b", "color": "red", "type": "colors"}
{"item": "b", "color": "yellow", "type": "colors"}
{"item": "b", "color": "green", "type": "colors"}
{"item": "b", "color": "black", "type": "colors"}
{"item": "c", "color": "white", "type": "colors"}
{"item": "c", "color": "red", "type": "colors"}
{"item": "c", "color": "yellow", "type": "colors"}
{"item": "c", "color": "green", "type": "colors"}
{"item": "d", "color": "red", "type": "colors"}
{"item": "d", "color": "yellow", "type": "colors"}
{"item": "d", "color": "green", "type": "colors"}
Here items can have values a, b, c, d.
They can be one of the following color: white, yellow, red, green, black.
I am trying to write a single query that would return documents for type "items" that can be "white", but not "black" or "black", but not "white", or neither "white" nor "black". Given data presented above, this query would return:
{"item": "b", "type": "items"} // "black", but no "white"
{"item": "c", "type": "items"} // "white", but no "black"
{"item": "d", "type": "items"} // no "white", and no "black"
Query I tried:
{
"query": {
"bool": {
"must_not": [
{
"has_child": {
"max_children": 2147483647,
"min_children": 0,
"query": {
"bool": {
"must": [
{
"term": {
"color": {
"value": "black"
}
}
}
]
}
},
"type": "colors"
}
},
{
"has_child": {
"max_children": 2147483647,
"min_children": 0,
"query": {
"bool": {
"must": [
{
"term": {
"color": {
"value": "white"
}
}
}
]
}
},
"type": "colors"
}
}
]
}
}
}
returns all documents because what it does is "NOT(color=WHITE and color=BLACK)" and color=WHITE and color=BLACK is always FALSE, NOT FALSE = TRUE.
In SQL I could do it in one query using self and outer joins, which I can not do in Elastic.
I also tried (color=WHITE and color!=BLACK) OR (color=BLACK and color!=WHITE) OR (color!=WHITE and color!=BLACK), but that does not work, for the same reason.
Would appreciate any help.
elasticsearch
asked Nov 17 '18 at 20:22
user5431794user5431794
134
My Elasticsearch 6.x index contains documents of type "items" (parents) and "colors" (children), linked by "item"
{"item": "a", "type": "items"},
{"item": "b", "type": "items"},
{"item": "c", "type": "items"},
{"item": "d", "type": "items"},
{"item": "a", "color": "white", "type": "colors"}
{"item": "a", "color": "red", "type": "colors"}
{"item": "a", "color": "yellow", "type": "colors"}
{"item": "a", "color": "green", "type": "colors"}
{"item": "a", "color": "black", "type": "colors"}
{"item": "b", "color": "red", "type": "colors"}
{"item": "b", "color": "yellow", "type": "colors"}
{"item": "b", "color": "green", "type": "colors"}
{"item": "b", "color": "black", "type": "colors"}
{"item": "c", "color": "white", "type": "colors"}
{"item": "c", "color": "red", "type": "colors"}
{"item": "c", "color": "yellow", "type": "colors"}
{"item": "c", "color": "green", "type": "colors"}
{"item": "d", "color": "red", "type": "colors"}
{"item": "d", "color": "yellow", "type": "colors"}
{"item": "d", "color": "green", "type": "colors"}
Here items can have values a, b, c, d.
They can be one of the following color: white, yellow, red, green, black.
I am trying to write a single query that would return documents for type "items" that can be "white", but not "black" or "black", but not "white", or neither "white" nor "black". Given data presented above, this query would return:
{"item": "b", "type": "items"} // "black", but no "white"
{"item": "c", "type": "items"} // "white", but no "black"
{"item": "d", "type": "items"} // no "white", and no "black"
Query I tried:
{
"query": {
"bool": {
"must_not": [
{
"has_child": {
"max_children": 2147483647,
"min_children": 0,
"query": {
"bool": {
"must": [
{
"term": {
"color": {
"value": "black"
}
}
}
]
}
},
"type": "colors"
}
},
{
"has_child": {
"max_children": 2147483647,
"min_children": 0,
"query": {
"bool": {
"must": [
{
"term": {
"color": {
"value": "white"
}
}
}
]
}
},
"type": "colors"
}
}
]
}
}
}
returns all documents because what it does is "NOT(color=WHITE and color=BLACK)" and color=WHITE and color=BLACK is always FALSE, NOT FALSE = TRUE.
In SQL I could do it in one query using self and outer joins, which I can not do in Elastic.
I also tried (color=WHITE and color!=BLACK) OR (color=BLACK and color!=WHITE) OR (color!=WHITE and color!=BLACK), but that does not work, for the same reason.
Would appreciate any help.
elasticsearch
elasticsearch
asked Nov 17 '18 at 20:22
user5431794user5431794
134
asked Nov 17 '18 at 20:22
user5431794user5431794
134
asked Nov 17 '18 at 20:22
user5431794user5431794
134
asked Nov 17 '18 at 20:22
user5431794user5431794
134
asked Nov 17 '18 at 20:22
user5431794user5431794
134
134
add a comment |
add a comment |
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