# StringEpression

**URL:** <https://discuss.hail.is/t/stringepression/1190>\
**Category:** Hail Query & hailctl\
**Created:** [November 29, 2019, 11:12am UTC](https://discuss.hail.is/t/stringepression/1190 "2019-11-29T11:12:52Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![Haseeb1](https://avatars.discourse-cdn.com/v4/letter/h/df705f/32.png) [@Haseeb1](https://discuss.hail.is/u/Haseeb1)\
**Post date:** [December 16, 2019, 7:37am UTC](https://discuss.hail.is/t/stringepression/1190/5 "2019-12-16T07:37:27Z")

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I tried to write mt into a table but faced the following error; [VCFParseError: invalid INFO key](https://discuss.hail.is/t/vcfparseerror-invalid-info-key/1159/2)

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