世界上并没有完美的程序，但是我们并不因此而沮丧，因为写程序就是一个不断追求完美的过程。
问 ：inner hits有什么特点？
答 ：
问 ：inner hits如何使用？
答 ：
# inner hits
PUT /inner_hits_test
{
"mappings" : {
"dynamic" : "strict",
"properties" : {
"nested_1" : {
"type" : "nested",
"properties" : {
"name" : {
"type" : "text"
},
"nested_2" : {
"type" : "nested",
"properties" : {
"age" : {
"type" : "integer"
}
}
}
}
},
"join_1" : {
"type" : "join",
"relations" : {
"my_parent" : "my_child"
}
}
}
}
}
# 索引
POST /inner_hits_test/_doc/1
{
"nested_1" : [
{
"name" : "hello",
"nested_2" : [
{
"age" : "18"
}
]
}
],
"join_1" : "my_parent"
}
# 索引
POST /inner_hits_test/_doc/2?routing=1
{
"nested_1" : [
{
"name" : "hello",
"nested_2" : [
{
"age" : "19"
}
]
}
],
"join_1" : {
"name" : "my_child",
"parent" : 1
}
}
# 搜索 - 正常
GET /inner_hits_test/_search
{
"query" : {
"nested" : {
"path" : "nested_1",
"query" : {
"match" : {
"nested_1.name" : "hello"
}
}
}
}
}
# 结果
{
"took" : 0,
"timed_out" : false,
"_shards" : {
"total" : 1,
"successful" : 1,
"skipped" : 0,
"failed" : 0
},
"hits" : {
"total" : {
"value" : 2,
"relation" : "eq"
},
"max_score" : 0.18232156,
"hits" : [
{
"_index" : "inner_hits_test",
"_type" : "_doc",
"_id" : "1",
"_score" : 0.18232156,
"_source" : {
"nested_1" : [
{
"name" : "hello",
"nested_2" : [
{
"age" : "18"
}
]
}
],
"join_1" : "my_parent"
}
},
{
"_index" : "inner_hits_test",
"_type" : "_doc",
"_id" : "2",
"_score" : 0.18232156,
"_routing" : "1",
"_source" : {
"nested_1" : [
{
"name" : "hello",
"nested_2" : [
{
"age" : "19"
}
]
}
],
"join_1" : {
"name" : "my_child",
"parent" : 1
}
}
}
]
}
}
# 搜索 - inner_hits
GET /inner_hits_test/_search
{
"query" : {
"nested" : {
"path" : "nested_1",
"query" : {
"match" : {
"nested_1.name" : "hello"
}
},
"inner_hits" : {}
}
}
}
# 结果
{
"took" : 11,
"timed_out" : false,
"_shards" : {
"total" : 1,
"successful" : 1,
"skipped" : 0,
"failed" : 0
},
"hits" : {
"total" : {
"value" : 2,
"relation" : "eq"
},
"max_score" : 0.18232156,
"hits" : [
{
"_index" : "inner_hits_test",
"_type" : "_doc",
"_id" : "1",
"_score" : 0.18232156,
"_source" : {
"nested_1" : [
{
"name" : "hello",
"nested_2" : [
{
"age" : "18"
}
]
}
],
"join_1" : "my_parent"
},
"inner_hits" : {
"nested_1" : {
"hits" : {
"total" : {
"value" : 1,
"relation" : "eq"
},
"max_score" : 0.18232156,
"hits" : [
{
"_index" : "inner_hits_test",
"_type" : "_doc",
"_id" : "1",
"_nested" : {
"field" : "nested_1",
"offset" : 0
},
"_score" : 0.18232156,
"_source" : {
"name" : "hello",
"nested_2" : [
{
"age" : "18"
}
]
}
}
]
}
}
}
},
{
"_index" : "inner_hits_test",
"_type" : "_doc",
"_id" : "2",
"_score" : 0.18232156,
"_routing" : "1",
"_source" : {
"nested_1" : [
{
"name" : "hello",
"nested_2" : [
{
"age" : "19"
}
]
}
],
"join_1" : {
"name" : "my_child",
"parent" : 1
}
},
"inner_hits" : {
"nested_1" : {
"hits" : {
"total" : {
"value" : 1,
"relation" : "eq"
},
"max_score" : 0.18232156,
"hits" : [
{
"_index" : "inner_hits_test",
"_type" : "_doc",
"_id" : "2",
"_nested" : {
"field" : "nested_1",
"offset" : 0
},
"_score" : 0.18232156,
"_source" : {
"name" : "hello",
"nested_2" : [
{
"age" : "19"
}
]
}
}
]
}
}
}
}
]
}
}
# 搜索 - inner_hits - 多层嵌套
GET /inner_hits_test/_search
{
"query" : {
"nested" : {
"path" : "nested_1.nested_2",
"query" : {
"match" : {
"nested_1.nested_2.age" : "19"
}
},
"inner_hits" : {}
}
}
}
# 结果
{
"took" : 0,
"timed_out" : false,
"_shards" : {
"total" : 1,
"successful" : 1,
"skipped" : 0,
"failed" : 0
},
"hits" : {
"total" : {
"value" : 1,
"relation" : "eq"
},
"max_score" : 1.0,
"hits" : [
{
"_index" : "inner_hits_test",
"_type" : "_doc",
"_id" : "2",
"_score" : 1.0,
"_routing" : "1",
"_source" : {
"nested_1" : [
{
"name" : "hello",
"nested_2" : [
{
"age" : "19"
}
]
}
],
"join_1" : {
"name" : "my_child",
"parent" : 1
}
},
"inner_hits" : {
"nested_1.nested_2" : {
"hits" : {
"total" : {
"value" : 1,
"relation" : "eq"
},
"max_score" : 1.0,
"hits" : [
{
"_index" : "inner_hits_test",
"_type" : "_doc",
"_id" : "2",
"_nested" : {
"field" : "nested_1",
"offset" : 0,
"_nested" : {
"field" : "nested_2",
"offset" : 0
}
},
"_score" : 1.0,
"_source" : {
"age" : "19"
}
}
]
}
}
}
}
]
}
}
# 搜索 - join - 查子类
GET /inner_hits_test/_search
{
"query" : {
"has_child" : {
"type" : "my_child",
"query" : {
"nested" : {
"path" : "nested_1.nested_2",
"query" : {
"match" : {
"nested_1.nested_2.age" : "19"
}
}
}
},
"inner_hits" : {}
}
}
}
# 结果
{
"took" : 0,
"timed_out" : false,
"_shards" : {
"total" : 1,
"successful" : 1,
"skipped" : 0,
"failed" : 0
},
"hits" : {
"total" : {
"value" : 1,
"relation" : "eq"
},
"max_score" : 1.0,
"hits" : [
{
"_index" : "inner_hits_test",
"_type" : "_doc",
"_id" : "1",
"_score" : 1.0,
"_source" : {
"nested_1" : [
{
"name" : "hello",
"nested_2" : [
{
"age" : "18"
}
]
}
],
"join_1" : "my_parent"
},
"inner_hits" : {
"my_child" : {
"hits" : {
"total" : {
"value" : 1,
"relation" : "eq"
},
"max_score" : 1.0,
"hits" : [
{
"_index" : "inner_hits_test",
"_type" : "_doc",
"_id" : "2",
"_score" : 1.0,
"_routing" : "1",
"_source" : {
"nested_1" : [
{
"name" : "hello",
"nested_2" : [
{
"age" : "19"
}
]
}
],
"join_1" : {
"name" : "my_child",
"parent" : 1
}
}
}
]
}
}
}
}
]
}
}
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