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Author: Simo

PostgreSQL common statement

postgres=# create database mydb;
CREATE DATABASE

postgres=# alter database mydb;
ALTER DATABASE

postgres=# create table mydbtable(name varchar(80),year int);
CREATE TABLE

postgre

September 21, 2021By Simo Postgresql common, PostgreSQL, statementLeave a Comment

Interpretation of the four families of the NOSQL database

In the current enterprise IT architecture, system administrators and DBAs will consider using NoSQL databases to solve problems that RDBMS cannot solve, especially in the Internet industry. Traditi

September 21, 2021By Simo NosqlLeave a Comment

PostgreSQL Update the JSONB column using another list

I want to migrate data from one column (varchar) to another (jsonb)

Column | Type | Modifiers < br />————+—————————–+—- ——————————————

September 21, 2021By Simo Postgresql Column, JSONB, New, one column, PostgreSQL, use, valueLeave a Comment

What is the difference between the NOSQL – OrientDB version?

I have been reading about OrientDB for a while, and I am a bit confused about the “version” of the software.

The major version sounds like a file storage, But things on the Internet sound lik

September 21, 2021By Simo Nosql Difference, NOSQL, OrientDB, version, whatLeave a Comment

PostgreSQL – AWS Redshift loading data from S3

So I am trying to load data from an S3 bucket into my Redshift database. I have a table’Example’ with the field’timestamp’ in the format of’YY-MM’ -DD ​​HH: MM: SS’.

Use copy query to load da

September 21, 2021By Simo Postgresql AWS, data, loading, PostgreSQL, Redshift, S3Leave a Comment

PostgreSQL – How to create anone2one relationship in ODOO 8?

I have two sets of data showing a one-to-one relationship.

I cannot merge these two sets of data because:

> A specific record may only appear in set A, only appear in set B, or appear i

September 21, 2021By Simo Postgresql create, How, Odoo, One2one, PostgreSQL, relationshipLeave a Comment

Enforce PostgreSQL type conversion using Jooq tools

Is there a way to configure the JOOQ tool to use the PostgresSQL database’s ‘forcedTypes’ tag to convert smallint to Boolean without providing org.jooq.Converter implementation?

This is what

September 21, 2021By Simo Postgresql conversion, Force, Jooq, PostgreSQL, tool, type, useLeave a Comment

Cluster key in Nosql – Cassandra

On a given physical node, the rows of a given partition key are stored in the order triggered by the clustering key, making the retrieval of the rows in this clustering order particularly effective

September 21, 2021By Simo Nosql Cassandra, class, Gathering, key, Medium, NOSQLLeave a Comment

How to configure Cassandra remote connection

I am trying to configure Cassandra Datastax Community Edition on Windows for remote connection,

Cassandra Server is installed on a Windows 7 PC, using local CQLSH, It can connect to the local

September 21, 2021By Simo Nosql Cassandra, configuration, connection, How to, remoteLeave a Comment

NOSQL – POUCHDB structure

I am a new feature of the nosql concept, so when I started to learn PouchDB, I found this conversion diagram. My confusion is, if I say that I have multiple tables, how Dealing with PouchDB, does t

September 21, 2021By Simo Nosql NOSQL, PouchDB, structureLeave a Comment

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