gistfile1.txt

#!/bin/bash

# Tested with elasticsearch version 6.1.3 

# Delete the existed one
curl -XDELETE localhost:9200/test?pretty

# Put new mapping
curl -XPUT localhost:9200/test?pretty -H 'Content-Type: application/json' -d '{
    "settings": {
        "analysis": {
            "analyzer": {
                "trigrams": {
                    "tokenizer": "trigram_tokenizer",
                    "filter":   [
                        "lowercase"
                    ]
                }
            },
            "tokenizer": {
                "trigram_tokenizer": {
                    "type": "ngram",
                    "min_gram": 3,
                    "max_gram": 3,
                    "token_chars": []
                }
            }
        }
    },
    "mappings": {
        "product": {
            "properties": {
                "name": {
                    "type":     "text",
                    "analyzer": "trigrams" 
                }
            }
        }
    }
}'

# Add some docs to the index
curl -H 'Content-Type: application/json' -XPOST localhost:9200/test/product/1?pretty -d '{"name" : "VGA (การ์ดแสดงผล) ASUS CERBERUS GTX1070TI A8G"}'
curl -H 'Content-Type: application/json' -XPOST localhost:9200/test/product/2?pretty -d '{"name" : "VGA (การ์ดแสดงผล) INNO3D GTX 1070 Ti X2 V2 8GB ( N107T-2SDN-P5DS )"}'
curl -H 'Content-Type: application/json' -XPOST localhost:9200/test/product/3?pretty -d '{"name" : "VGA (การ์ดแสดงผล) MSI GTX 1080 Ti ARMOR 11G OC"}'
curl -H 'Content-Type: application/json' -XPOST localhost:9200/test/product/3?pretty -d '{"name" : "8 GB MICRO SD CARD (ไมโครเอสดีการ์ด) KINGSTON (SDC4/8GB)"}'

# Take some time before content can be search after post
sleep 4

# Analyze API to check out trigrams
curl -H 'Content-Type: application/json' -XGET localhost:9200/test/_analyze?pretty -d '{ "analyzer": "trigrams", "text":"GTX:1070"}' | grep "token"
curl -H 'Content-Type: application/json' -XGET localhost:9200/test/_analyze?pretty -d '{ "analyzer": "trigrams", "text":"ceberus"}' | grep "token"
curl -H 'Content-Type: application/json' -XGET localhost:9200/test/_analyze?pretty -d '{ "analyzer": "trigrams", "text":"cerberus"}' | grep "token"

# Check ranking from query with difference keyword
curl -H 'Content-Type: application/json' -XPOST localhost:9200/test/product/_search?pretty -d '{"query" : {"match" : {"name" : "GTX"}}}' | grep -E "name|score"
curl -H 'Content-Type: application/json' -XPOST localhost:9200/test/product/_search?pretty -d '{"query" : {"match" : {"name" : "GTX:1070"}}}' | grep -E "name|score"
curl -H 'Content-Type: application/json' -XPOST localhost:9200/test/product/_search?pretty -d '{"query" : {"match" : {"name" : { "query":"ceberus"}}}}' | grep -E "name|score"
curl -H 'Content-Type: application/json' -XPOST localhost:9200/test/product/_search?pretty -d '{"query" : {"match" : {"name" : { "query":"ไมโครเอสดีการ์ด"}}}}' | grep -E "name|score"
curl -H 'Content-Type: application/json' -XPOST localhost:9200/test/product/_search?pretty -d '{"query" : {"match" : {"name" : { "query":"ไมโครเอสดีการ์ด", "minimum_should_match":"50%"}}}}' | grep -E "name|score"