# Combine Tables Loading Indefinitely

**URL:** <https://community.parabola.io/t/combine-tables-loading-indefinitely/2175>\
**Category:** Ask a question\
**Created:** [December 8, 2021, 7:41pm UTC](https://community.parabola.io/t/combine-tables-loading-indefinitely/2175 "2021-12-08T19:41:53Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Matt\_Brosseau](https://sea2.discourse-cdn.com/flex020/user_avatar/community.parabola.io/matt_brosseau/32/1730_2.png) [@Matt\_Brosseau](https://community.parabola.io/u/Matt_Brosseau)\
**Post date:** [December 8, 2021, 7:41pm UTC](https://community.parabola.io/t/combine-tables-loading-indefinitely/2175/1 "2021-12-08T19:41:53Z")

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I’m combining two database (MySQL) tables in order to associate names with coded fields. It’s only about 45,000 rows, which is well within the limitations of Parabola, but it’s been calculating for hours.

Is there an additional limitation to this feature that isn’t broadly documented?

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**Author:** ![daniel](https://sea2.discourse-cdn.com/flex020/user_avatar/community.parabola.io/daniel/32/732_2.png) [@daniel](https://community.parabola.io/u/daniel)\
**Post date:** [December 8, 2021, 8:02pm UTC](https://community.parabola.io/t/combine-tables-loading-indefinitely/2175/2 "2021-12-08T20:02:55Z")

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Hey @Matt_Brosseau,

Thanks for letting us know. There aren’t any limitations that are not otherwise documented. This sounds like the Combine tables step hit a snag.

To troubleshoot, can you try deleting the Combine tables step that is currently calculating? Drag in a fresh, step from the sidebar to see if that helps. If that doesn’t work, duplicating the flow in most cases will help.

If neither of those options work, feel free to send us an email at [help@parabola.io](mailto:help@parabola.io) and we can take a look at your flow more in-depth.