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The following code
```python
from typing import AbstractSet, Tuple
from neurolang.expressions import Constant
from neurolang.relational_algebra import (
NamedRelationalAlgebraFrozenSet,
…
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In the following self-contained example, I try to apply a projection where the attributes are defined as a tuple of `Symbol`s.
```python
from typing import AbstractSet
from neurolang.expressions …
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We need a definition of model vs data transformation
From @dnfeldman:
"In terms of making the distinction between a transformation and a model, I don’t think it should be based on what needs to…
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I would like for `blazing-sql` to support semi join .
Semijoins are a way to filter a rowset based on the inclusion of its rows in another rowset.
#### SQL equivalent:
```
SELECT * FROM …
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Environment: latest 0.13 nightly conda packages
```
(rapids) root@dgx01:/# conda list | grep rapids
# packages in environment at /conda/envs/rapids:
bsql-rapids-thirdparty 0.13.0a …
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UNION ALL is basically Union without the elimination of multiple equal values, and small delta eliminates the multiple equal values
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## Environment data
- Language Server version: 2021.1.3-pre.1
- OS and version: Arch Linux 5.10.10-arch1-1
- Python version (& distribution if applicable, e.g. Anaconda): 3.9.1
## …
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Motivated by #14073. One can execute `expr = x + (x > 0) ` (where x is a SymPy symbol) without an exception raised. Operators like `expr*2` or `expr**2` work as well. Curiously, `expr.is_commutative` …
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As sales continues, I'm struck by how much of my hustling resembles long chains of professional introductions. Coding the channels by degree of introduction is becoming more unhelpful as meetings are …
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https://github.com/NeuroLang/NeuroLang/blob/6230176c09f4a9a8ea92209a2b5453e192ad8946/neurolang/relational_algebra.py#L111
If so, I can open a PR (should be quick)