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In `http://localhost:3000/chapter/2`: "The order of the data patterns does not matter (except possibly for performance)"
It _definitely_ matters :-) Datalog has no query optimiser; it'll execute clau…
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Using deviationtx on a jumper t8sg v2 plus I cannot parse any helpful info with datalog2csv.py
From this file:
[datalog.zip](https://github.com/DeviationTX/deviation/files/4272879/datalog.zip)
…
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A few suggestions:
1. All example queries should run
2. We should have a few useful ones front-loaded. Right now we focus on simple language use cases, but we should add examples that we know highligh…
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```
Weblog updates are assumed to be datalog (i.e. in rule form and safe). Need to
have the language enforce this.
```
Original issue reported on code.google.com by `thinr...@gmail.com` on 20 Sep …
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```
Weblog updates are assumed to be datalog (i.e. in rule form and safe). Need to
have the language enforce this.
```
Original issue reported on code.google.com by `thinr...@gmail.com` on 20 Sep …
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The issue to focus on is the "volumes" part of the docker-compose file
I'm using the Ubuntu 20.04 AMI from AWS to reproduce the issue
```
ubuntu@ip-172-31-90-14:~$ cat /etc/lsb-release
DISTRIB_…
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~~~
TPCQ15:
PROGRAM:
q(s_suppkey,s_name,s_address,s_phone,rev) :- supplier(s_suppkey,s_name,s_address,s1,s_phone,s2,s3),q1(s_suppkey,rev),q2(rev).
rp(x1,x2,x3,x4,x5) :- rtpcq15(x1…
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``` datalog
A(x) :- R(x,3), x>3+1.
```
will compile to a wrong RA plan and a wrong Myria plan. The expression `3+1` will be ignored.
Is this by design or is this a bug?
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Check the following datalog rules:
RULE 1
if x is a triangle and y is a vertex of x and
z is a vertex of x and not (y = z),
then yz is a side of x
RULE 2
if x and y are two vertices of …
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To prevent a situation where queries fail simply due to missing data, it might make sense to introduce default values (similar to `get-else` in [datomic](https://docs.datomic.com/on-prem/query.html)).