Apache Cassandra - Tutorial 8 - CQL - Keyspaces and Tables

Показать описание

In this video we are going to start looking out how we interact with a Cassandra cluster. In order to use this we use a special query language called Cassandra Query Language or CQL.

CQL is similar in syntax to SQL although there are some important changes. CQL can be used to create tables and keyspaces, add data to our database, update data and many other things.

CQL is simple to get started with and this video will take you through the basics. The next few videos in this series will cover more features of CQL.

Рекомендации по теме

Комментарии

Very nice and easy to understand tutorial. Thank you for sharing knowledge.

prasad

How the data wirte and read happens when data is stored in multiple data center?
I know that in a single data center, cassandra first calculate the hash of the partition key and then each node is assigned a range of values and it works like this. But what happens when there are more than one data center?

sauravbhagat

Please cover token allocation to the nodes. It's not in any of the books I have, yet it's the most critical part of data safety. I can't find it any docs either.

hehk

Hi, After dropping the keyspace still it is physically available in cassandra home data location.
How to clear physicall location for keyspace and in cqlsh prompt describe command it is possible to get the keyspace physical location?

rajeshdheenan

I followed your this playlist since beginning
I m sorry I haven’t heard about composite key in any video .
This video became little difficult to understand

AwaraGhumakkad

DESCRIBE KEYSPACES returns empty... Can't figure out why

turtlepeak

hello, when i try to crete table with: car_model it give me: InvalidRequest: Error from server: code=2200 [Invalid query] message=" for table

oumaimabougryne