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I have
```
CREATE TABLE publisher (
publisher_id serial PRIMARY KEY,
name text
);
CREATE TABLE author (
author_id serial PRIMARY KEY,
name text
);
CREATE TABLE book (
…
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There are a couple issues here, just not sure about the best way to fix them.
A couple things to setup the examples:
```
>>> A = MatrixSymbol('A', 3, 1)
>>> B = MatrixSymbol('B', 2, 1)
```
1.) A an…
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I have been using dplyr with MonetDBLite for a while, and it literally solves all my problems in my work. I am curious about his rquery package. My first question is what difference does it make compa…
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_This issue was originally posted by @haikalpribadi on 2017-03-20 15:14_.
How should we handle "implicit casts" between types? e.g. given an integer in a Graql query such as `3` in `match $x has c…
grabl updated
5 years ago
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The following *relational graph composition* operation is useful for various reachability algorithms but I can't figure out an efficient implementation.
Let `z = compose x y`. Then:
* `Ez = Ey ∘…
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the table join icons added in #989 seems like they should be aliased using set and relational algebra terminology
specifically:
set-all -> set-union; set-or; full-outer-join
set-center -> set-int…
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As I understand it, at the moment the following things are true:
- If you want a `Relation`, you should construct something polymorphically using the (non-higher-kinded) `Graph` class, instantiated t…
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**Describe the solution you'd like**
I want to obtain the multiplication of two quaternion matrices. However, the multiplication is not for the quaternion matrices. Could you please add the modules o…
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Relational Algebra for Spatial Data Search
https://arxiv.org/pdf/cs/0408031.pdf
CQEngine - Collection Query Engine
https://github.com/npgall/cqengine
java.util.ArrayList performance guide
htt…