Search by text field - elasticsearch

Question

Here is my index:
λ curl -XGET -u elastic:elasticpassword http://192.168.1.71:9200/test/mytype/_search?pretty -d'{"query":{"match_all":{}}}'
{
"took" : 5,
"timed_out" : false,
"_shards" : {
"total" : 5,
"successful" : 5,
"failed" : 0
},
"hits" : {
"total" : 2,
"max_score" : 1.0,
"hits" : [
{
"_index" : "test",
"_type" : "mytype",
"_id" : "2",
"_score" : 1.0,
"_source" : {
"name" : "Dio",
"age" : 10
}
},
{
"_index" : "test",
"_type" : "mytype",
"_id" : "1",
"_score" : 1.0,
"_source" : {
"name" : "Paul",
"pro" : {
"f" : "Cris",
"t" : "So"
}
}
}
]
}
}
Here is a default mapping:
λ curl -XGET -u elastic:elasticpassword http://192.168.1.71:9200/test/mytype/_mapping?pretty
{
"test" : {
"mappings" : {
"mytype" : {
"properties" : {
"age" : {
"type" : "long"
},
"name" : {
"type" : "text",
"fields" : {
"keyword" : {
"type" : "keyword",
"ignore_above" : 256
}
}
},
I can find by age field, but cannot by name field. Why ?
λ curl -XGET -u elastic:elasticpassword http://192.168.1.71:9200/test/mytype/_search?pretty -d'{"query":{"term":{"age":10}}}'
{
"took" : 6,
"timed_out" : false,
"_shards" : {
"total" : 5,
"successful" : 5,
"failed" : 0
},
"hits" : {
"total" : 1,
"max_score" : 1.0,
"hits" : [
{
"_index" : "test",
"_type" : "mytype",
"_id" : "2",
"_score" : 1.0,
"_source" : {
"name" : "Dio",
"age" : 10
}
}
]
}
}
λ curl -XGET -u elastic:elasticpassword http://192.168.1.71:9200/test/mytype/_search?pretty -d'{"query":{"term":{"name":"Paul"}}}'
{
"took" : 5,
"timed_out" : false,
"_shards" : {
"total" : 5,
"successful" : 5,
"failed" : 0
},
"hits" : {
"total" : 0,
"max_score" : null,
"hits" : [ ]
}
}

Answer 1

The problem is that you name field is analyzed by default with the standard analyzer, which lowercases the field. You can either search for paul or search in name.keyword field with Paul.