Data mismatch in elasticsearch when loading data from database using logstash

Elastic Stack Logstash
2

The input code used is as follows,

input {

jdbc {
jdbc_driver_library => "XXXXXX/Downloads/sqljdbc4-2.0.jar"
jdbc_driver_class => "XXXXXX"
jdbc_connection_string => "jdbc:sqlserver://XXXXXX;user=XXXXXX;password=yyyyyy;database=ZZZZZZZZZ"
jdbc_user => "XXXXXX"
jdbc_password => "yyyyyy"
statement => "SELECT company ,name , customer_group_name  from TEST"
jdbc_paging_enabled => "true"
jdbc_page_size => "50000"
}
}

 output{
	 
	   elasticsearch { codec => json hosts => ["localhost:9200"] index => "index_name" document_type => "_doc"  } 
       stdout { codec => rubydebug }
}

Waiting for your response,

thanks inadvance.