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feat: rename columns #2900

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talagluck opened this issue Apr 15, 2024 · 4 comments · May be fixed by #2906
Open

feat: rename columns #2900

talagluck opened this issue Apr 15, 2024 · 4 comments · May be fixed by #2906
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@vrongmeal
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feat 🎇 New feature or request

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@talagluck
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Description

I'd like to be able to rename columns using ALTER TABLE, but this appears to not be implemented.

I tried

alter table nyc_sales rename column "ease-ment" to "easement";
alter table nyc_sales rename "ease-ment" to "easement";

And I get

Query failed to run.

SQL statement currently unsupported: RENAME COLUMN "ease-ment" TO "easement"
@talagluck talagluck added the bug 🐛 Something isn't working label Apr 15, 2024
@vrongmeal
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Let me see if I can make this happen quickly.

@vrongmeal vrongmeal self-assigned this Apr 17, 2024
@vrongmeal
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I did add the functionality. We get the schema from delta snapshot which causes discrepancy. Delta or any other backend would maintain its own schema which might be a bit harder to deal with right now 🤔

vrongmeal added a commit that referenced this issue Apr 18, 2024
@vrongmeal
feat: ALTER TABLE .. RENAME COLUMN ..
347df7d 
This doesn't work since we need to update the delta metadata as well with
the updated schema which I haven't been able to figure out how...

Fixes: #2900

Signed-off-by: Vaibhav <vrongmeal@gmail.com>
@vrongmeal vrongmeal linked a pull request Apr 18, 2024 that will close this issue
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@universalmind303
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universalmind303 commented Apr 18, 2024 •
edited

FWIW, deltalake does support RENAME COLUMN and it's even in the official implementation, but it doesn't look like it's made it's way into delta-rs yet.

It's currently marked as experimental, but it's also been in since 1.2.0 (they're on 3.1.0). So we'll probably need to upstream the functionality to delta-rs

@universalmind303 universalmind303 added the feat 🎇 New feature or request label Apr 22, 2024
@universalmind303 universalmind303 changed the title BUG: ALTER TABLE not implemented feat: rename columns Apr 22, 2024
@universalmind303 universalmind303 removed the bug 🐛 Something isn't working label Apr 22, 2024
@universalmind303
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reclassifying as "feature" as it's technically not a bug, but just missing functionality.

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@vrongmeal vrongmeal

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feat: ALTER TABLE .. RENAME COLUMN .. GlareDB/glaredb
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@talagluck @universalmind303 @vrongmeal