# Use logstash\_checksum as tracking\_column

**URL:** <https://discuss.elastic.co/t/use-logstash-checksum-as-tracking-column/209269>\
**Category:** Logstash\
**Created:** [November 25, 2019, 9:49am UTC](https://discuss.elastic.co/t/use-logstash-checksum-as-tracking-column/209269 "2019-11-25T09:49:57Z")\
**Posts on this page:** 1\
**Showing post:** 9

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**Author:** ![WalterLeff](https://avatars.discourse-cdn.com/v4/letter/w/a8b319/32.png) [@WalterLeff](https://discuss.elastic.co/u/WalterLeff)\
**Post date:** [November 25, 2019, 4:51pm UTC](https://discuss.elastic.co/t/use-logstash-checksum-as-tracking-column/209269/9 "2019-11-25T16:51:22Z")

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I did

Anyway thanks for the patience and help

> [@Updated data with tracking column for sql server binary timestamp](https://discuss.elastic.co/t/updated-data-with-tracking-column-for-sql-server-binary-timestamp/208700):
>
> Hi all, I have a table with a version column which is a timestamp as a binary. This is changed every time there is a change/update in the row. I can transmit this table to elastic but my format is not really correct \<Sequel::SQL::Blob:0x9b18 bytes=8 content="\u0000\u0000\u0000\u0000\u0001\xE6\u0016\xEF" instead of 00000000000000000001E60016xEF" is there a way to correctly import this binary column and set it as a tracking column so when there is a change is this field logstash only updat…

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