feature(query): copy into stage support

[sundy-li]

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Summary

Summary about this PR

Changelog

• New Feature

Related Issues

Fixes #4498

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Name	Status	Preview	Updated
databend	✅ Ready (Inspect)	Visit Preview	May 26, 2022 at 3:45AM (UTC)

[mergify]

Thanks for the contribution!
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[BohuTANG]

👍

LGTM

[BohuTANG]

We add a new feature: unloading data into s3.
There is a demo https://github.com/datafuselabs/databend/pull/5579/files#diff-7c8278d52ae4ed2008a0098db05b1f085394cab7c01888a7fb71435d7b2e354f
cc @soyeric128

[soyeric128]

We add a new feature: unloading data into s3.
There is a demo https://github.com/datafuselabs/databend/pull/5579/files#diff-7c8278d52ae4ed2008a0098db05b1f085394cab7c01888a7fb71435d7b2e354f
cc @soyeric128

Hi @BohuTANG,

Do we support unloading into all of the three places, internalStage | externalStage | externalLocation as the syntax shows in #4498 ? Or the external stage only as indicated in the demo above?

[BohuTANG]

Hi @soyeric128
Yes, we support three.

[soyeric128]

Hi @soyeric128
Yes, we support three.

Thanks for the reply. I just created a PR to add a file describing the command "COPY INTO location".

• Most of the parameter description is from the "COPY INTO table" page.
• I used the test script in the demo you provided as the example.

Please help review the page and let me know if any comments, thanks.