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There seems to be a `@property` proper to the wrapped collections. It's called `row_type` and has a private attribute called `__row_type`. Both are defined within the `WrappedExpressionIterable` mixin…
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Here are the things I think joins can take advantage of to improve performance:
* allow `join`s on `GroupedDataFrame`
* taking into account the cardinality of rows of joined tables
* being able to …
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I did some research on the best options for a new Postgres library, here they are:
## doobie
> doobie is a pure functional JDBC layer for Scala and Cats. It is not an ORM, nor is it a relational…
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Operations like `__eq__` will be much faster.
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say you have the following `NamedRelationalAlgebraFrozenSet`:
```
R = NamedRelationalAlgebraFrozenSet(
iterable=[("a", 2), ("c", 42)], columns=["x", "y"],
)
```
and a constant probability `p…
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Many modules still contain this import and similar ones, which is relevant for python 2:
`from __future__ import division, print_function
`
I don't know whether it is necessary or not, since python…
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My suggestion is add a small section to the [single table inheritance](https://docs.sqlalchemy.org/en/13/orm/inheritance.html#single-table-inheritance) documentation that demonstrates what to do if m…
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Hi guys,
I am thinking to implement something like blazinggraph based on cugraph rapids subproject to implement some query language for graphs (cypher, gremlin, graphql, sparql) and I would like to…
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```
Consider how none of the following work:
In [25]: Eq(x, y) + Eq(y, z)
Out[25]: x = y + y = z
In [26]: Eq(x, y) * Eq(y, z)
Out[26]: x = y⋅y = z
In [27]: Eq(x, y).diff(x)
Out[27]:
d
──(x…
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### Question:
As I dive more and more into jOOQ I am getting bit over and over by its overly relaxed and unsafe approach to column names. I use the generated tables so each column name is fully qua…