edgedb | relational database with declarative schema | Database library
kandi X-RAY | edgedb Summary
kandi X-RAY | edgedb Summary
EdgeDB is a new kind of database that takes the best parts of relational databases, graph databases, and ORMs. We call it a graph-relational database.
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Top functions reviewed by kandi - BETA
- Normalize view pointer expressions .
- Process a link update .
- Generate a table structure .
- Trace an operation .
- Compile an SQL statement .
- Parse the DSN .
- Compile a path .
- Generate a config type view .
- Try to bind the given arguments .
- Calculate a delta schemas .
edgedb Key Features
edgedb Examples and Code Snippets
Lines of Code : 59License : Permissive (Apache-2.0)
Copy* - :eql:type:`str`
- A variable-length string
* - :eql:type:`bool`
- Logical boolean (true/false)
* - :eql:type:`int16`
- 16-bit integer
* - :eql:type:`int32`
- 32-bit integer
* - :eql:type:`int64`
- 64-bit integer
* - :eql:type:`floa package main
import (
"context"
"fmt"
"log"
"github.com/edgedb/edgedb-go"
)
func main() {
opts := edgedb.Options{
Database: "edgedb",
User: "edgedb",
Concurrency: 4,
}
ctx := context.Background()
client, err := edgedb.Crea * - :eql:func:`math::abs`
- :eql:func-desc:`math::abs`
* - :eql:func:`math::ceil`
- :eql:func-desc:`math::ceil`
* - :eql:func:`math::floor`
- :eql:func-desc:`math::floor`
* - :eql:func:`math::ln`
- :eql:func-desc:`math::ln`
* - :eql:func: scp -i /directory/to/abc.pem mydump.sql user@ec2-xx-xx-xxx-xxx.compute-1.amazonaws.com:/tmp/
./pg_restore -U postgres -p 5432 -d yourdatabase < mydump.sql
def on_click(self):
"""Button Action function"""
tb_value = "Total no of rows affected: {}".format(EpiClass.CT)
self.textbox2.setText(tb_value)
SELECT name
FROM reference_cities
WHERE site_id = 2
EXCEPT
SELECT name
FROM reference_cities
WHERE site_id = 1;
postgres=# create table reference_cities (id int, name text, site_id int);
CREATE TABLE
postgres=# ipip3 install psycopg2-binary
export PGDATABASE=postgres
export PGUSER=postgres
export PGPORT=5432
export PATH=/Library/PostgreSQL/11/bin:$PATH
export PGLOCALEDIR=/Library/PostgreSQL/11/share/locale
export PYTHONUSERBASE=/Users/postgres/packaging_tutorial
export PYTHONerrbot-project/
├── data/
│ ├── ...
├── plugins/
│ ├── plugin1/
| ├── ...
| ├── plugin2/
| ├── ...
errbot-project/
├── data/
│ ├── ...
├── plugins/
│ ├── plugin1/
| ├── ...
| ├── plugiCommunity Discussions
Trending Discussions on edgedb
QUESTION
We know we can create a computed property based on other properties like so as per the docs,
...ANSWER
Answered 2022-Jan-27 at 02:01You can check optional properties for emptiness using the exists operator:
QUESTION
How do you define a unique index in EdgeDB?
For simple properties you can add constraint exclusive which implicitly creates a unique index.
ANSWER
Answered 2020-Jul-29 at 19:10You can add constraint exclusive on (...) to the containing type, where ... is an arbitrary scalar expression. To ensure the uniqueness of multiple properties, it should be a tuple (x, y):
QUESTION
How do you define a composite index in EdgeDB?
The simplest form of index is an index, which references one or more properties directly:
...
ANSWER
Answered 2020-Jul-29 at 19:01You can add index on (...) to the containing type, where ... is an arbitrary scalar expression. To create a composite index it should be a tuple (x, y):
QUESTION
I'm testing EdgeDB locally, my host is a decent macbook pro and the database runs in docker:
...ANSWER
Answered 2020-Feb-05 at 19:40I reproduced the benchmark with a few changes: 1) I only measured the actual query runtime (connection time excluded); 2) EdgeDB server was running directly on a Linux host, not in Docker.
My result:
35038 records in 0.286s: 122314 records/s
To compare, I loaded the same dataset directly into Postgres and ran a similar query with psycopg2. The result was nearly identical:
35038 records in 0.285s: 122986 records/s
This is not surprising, since once the query is compiled to SQL, the I/O overhead of EdgeDB over raw Postgres is negligible. Additionally, to stress-test the server better you need multiple concurrent clients, as we've done in our benchmarks.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install edgedb
The quickstart. If you're just starting out, the 10-minute quickstart guide is the fastest way to get up and running.
The interactive tutorial. For a structured deep-dive into the EdgeQL query language, try the web-based tutorial— no need to install anything.
The e-book. For the most comprehensive walkthrough of EdgeDB concepts, check out our illustrated e-book Easy EdgeDB. It's designed to walk a total beginner through EdgeDB in its entirety, from the basics through advanced concepts.
The docs. Jump straight into the docs for schema modeling or EdgeQL!
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