SQL data upload using JDBC-logstash

Elastic Stack Logstash
2

If the leave_id field is the primary key, you can use as doc_id. If is not, then you should use fingerprint. Check the similar topic.

output {
  elasticsearch {
    hosts => ["http://localhost:9200"]
    user => "elastic"
    index => "index_mxcel_patient_leaves"
    document_id => "%{leave_id}"
    doc_as_upsert => true
  }