Issue 16639 postgres load indexes

[carono]

Q	A
Is bugfix?	yes
New feature?	no
Breaks BC?	no
Tests pass?	no
Fixed issues	#16639

[yii-bot]

Thank you for putting effort in the improvement of the Yii framework.
We have reviewed your pull request.

In order for the framework and your solution to remain stable in the future, we have a unit test requirement in place. Therefore we can only accept your pull request if it is covered by unit tests.

Could you add these please?

Thanks!

P.S. If you have any questions about the creation of unit tests? Don't hesitate to ask for support. More information about unit tests

This is an automated comment, triggered by adding the label pr:request for unit tests.

[samdark]

Are you sure that sub-query won't affect schema reading performance significantly?

[carono]

I will answer this question a little later, I will make measurements of productivity. I'll also try to make a single request

[carono]

you're right, there's still something to think about optimizing the subquery.

tables: 100
columns in each table: 20
indexes in each table: 15
index length: 2 - 10 columns
queries: 10000

Current query: 17sec
With sub query: 49sec

I will have to remove the subquery, but I do not yet know how =)

[samdark]

Closing since in its current form the pull request affects performance significantly.