# New blog: 🎄 Twelve Days of SMT 🎄 - Day 9: Cast

**URL:** <https://forum.confluent.io/t/new-blog-twelve-days-of-smt-day-9-cast/383>\
**Category:** Kafka Connect\
**Created:** [18 December 2020 17:36 UTC](https://forum.confluent.io/t/new-blog-twelve-days-of-smt-day-9-cast/383 "2020-12-18T17:36:52Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![rmoff](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.confluent.io/rmoff/32/3_2.png) [@rmoff](https://forum.confluent.io/u/rmoff)\
**Post date:** [18 December 2020 17:36 UTC](https://forum.confluent.io/t/new-blog-twelve-days-of-smt-day-9-cast/383/1 "2020-12-18T17:36:52Z")

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The Cast Single Message Transform lets you change the data type of fields in a Kafka message, supporting numerics, string, and boolean.

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**Read more:** [🎄 Twelve Days of SMT 🎄 - Day 9: Cast](https://rmoff.net/2020/12/18/twelve-days-of-smt-day-9-cast/)

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**Author:** ![rmoff](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.confluent.io/rmoff/32/3_2.png) [@rmoff](https://forum.confluent.io/u/rmoff)\
**Post date:** [8 February 2021 10:35 UTC](https://forum.confluent.io/t/new-blog-twelve-days-of-smt-day-9-cast/383/2 "2021-02-08T10:35:21Z")

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A post was split to a new topic: [SMT - Cast field to a different type AND preserve the original value](https://forum.confluent.io/t/smt-cast-field-to-a-different-type-and-preserve-the-original-value/759)

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**Author:** ![rmoff](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.confluent.io/rmoff/32/3_2.png) [@rmoff](https://forum.confluent.io/u/rmoff)\
**Post date:** [9 February 2021 13:29 UTC](https://forum.confluent.io/t/new-blog-twelve-days-of-smt-day-9-cast/383/3 "2021-02-09T13:29:16Z")

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