fix: [sql_database] Handle type ARRAY

[vivingo]

Tell us what you do here

• Handle type ARRAY in source sql_database and map it to data_type "complex"

Short description

Type ARRAY (postgresql) was ignored and its data_type field was not filled.
-> is_complete_column (in dlt.common.destination.reference) is False and we have a further error during the load as the column is not recognized.

Related Issues

Additional Context

I only tried it with postgresql source and I hope this will not break other sources, but sqlalchemy's ARRAY Class documentation says (sqlalchemy.sql.sqltypes.ARRAY)

only the PostgreSQL backend has support for SQL arrays in SQLAlchemy

Also I thought more logical to map it to "complex", like json types

[rudolfix]

thanks for this fix! Implementation itself is good and I expect it to work. Please see the review, tests should run automatically this time. Let's make sure that arrow backend also works...

[rudolfix]

@vivingo are we able to push to your fork? we are happy to look at the tests and fix them

[vivingo]

@rudolfix yes, I enabled the "Allow edits by maintainers" checkbox.
Do I need to give write access on my fork repository as well, or will it be done automatically with this box checked?
Thank you !

(I don't understand why my tests succeed when I test locally, sorry for that. I just pushed a new change but I guess I might have some further errors)

[vivingo]

@rudolfix any update on this ?
Do I need to give other authorizations on my fork ?