DEPS: bump sqlalchemy min support version to 1.4.0

[fangchenli]

precursor of #42976

[alimcmaster1]

This is quite a big jump forward in terms of time.

SQLAlchemy 1.3.11 = November 19
SQLAlchemy 1.4.0 = March 21

I know in the past we've wanted to move abit more slowly. So cc @jreback for a decision on this.

[jreback]

no this is fine
the prior version is for compatibility (i mean if we can keep 1.3.11 compat would be great but not sure it's possible)

[alimcmaster1]

Think you will also need to update: https://github.com/pandas-dev/pandas/blob/master/pandas/compat/_optional.py#L29

and https://github.com/pandas-dev/pandas/blob/master/ci/deps/actions-38-locale_slow.yaml#L26

otherwise looks good

[jreback]

hah I didn't realize this was just a dep bump, ok.

[jreback]

@fangchenli if we wanted to have pre 1.4 compat (as well); how hard would this be?

[fangchenli]

@fangchenli if we wanted to have pre 1.4 compat (as well); how hard would this be?

pre 1.4 sqlalchemy freezes the CI in #42976. We could delay the refactoring of SQL tests to keep the pre 1.4 compact.

[lithomas1]

I think we might even have sqlalchemy 1.4 compat problems see #40682. This might not be safe to do for 1.4.

[github-actions]

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[jbrockmendel]

I think we might even have sqlalchemy 1.4 compat problems see #40682. This might not be safe to do for 1.4.

@lithomas1 can you clarify are you saying this isn't safe to do for pandas 1.4 or isnt safe to support sqlalchemy 1.4?

[lithomas1]

I meant bumping the min version for pandas 1.4.0. Sorry for the confusion

[jreback]

@fangchenli status of this?

[fangchenli]

@fangchenli status of this?

ready

[jreback]

can you add a whatsnew note about this change (assume we are dropping < 1.4)? (fine by me)

[fangchenli]

can you add a whatsnew note about this change (assume we are dropping < 1.4)? (fine by me)

It's already included in the 1.4 whatsnew doc.

[jreback]

thanks @fangchenli