Hi
I want to build such query with sqlalchemy:
SELECT array_agg((column1, column2)) from table
Using psql it works perfectly and returns such result:
{"(col1_row1_value, col2_row1_value)", "(col1_row2_value, col2_row2_value)"
...}
I tried several forms of SQLA-query:
>> from sqlalchemy.dialects.postgresql import ARRAY
>> from sqlalchemy.sql.elements import Tuple
>> ... func.array_agg(Tuple(Model.col1, Model.col2), type_=ARRAY(Unicode
))...
...
TypeError: unhashable type: 'list'
>> ... func.array_agg(Tuple(Model.col1, Model.col2), type_=ARRAY(Unicode,
as_tuple=True))...
...# returns value like this: ('{', '"', '(', 'c',...)
>> ... func.array_agg(Tuple(Model.col1, Model.col2), type_=ARRAY(Tuple,
as_tuple=True))...
...
AttributeError: Neither 'Tuple' object nor 'Comparator' object has an
attribute 'dialect_impl'
At first, I wanted to use *`func.jsonb_object_agg(Model.col1, Model.col2)`*,
but it raises *"unhashable type: dict"*
Could you point to solution?
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