Friday, 21 February 2020

Cassandra: How to insert hard coded uuid value via cqlsh?

In my previous post, I explained how to insert a uuid into a table using uuid() function. There are situations, where you have a uuid, and want to insert into a table.

How to insert hard coded uuid value?
Just insert as it is.

Example
INSERT INTO cassandratutorial.employee(id, first_name) VALUES (5987fd93-1783-4a14-a17a-5fc4fb191c2c, 'Krishna');

CQL Code snippet
CREATE KEYSPACE cassandratutorial WITH REPLICATION = 
{ 
  'class' : 'SimpleStrategy', 
  'replication_factor' : 1 
};

CREATE TABLE IF NOT EXISTS cassandratutorial.employee (
  id uuid PRIMARY KEY, 
  first_name VARCHAR
);

INSERT INTO cassandratutorial.employee(id, first_name) VALUES (5987fd93-1783-4a14-a17a-5fc4fb191c2c, 'Krishna');

Cqlsh console output
cqlsh> CREATE KEYSPACE cassandratutorial WITH REPLICATION = 
   ... { 
   ...   'class' : 'SimpleStrategy', 
   ...   'replication_factor' : 1 
   ... };
cqlsh> 
cqlsh> CREATE TABLE IF NOT EXISTS cassandratutorial.employee (
   ...   id uuid PRIMARY KEY, 
   ...   first_name VARCHAR
   ... );
cqlsh> 
cqlsh> INSERT INTO cassandratutorial.employee(id, first_name) VALUES (5987fd93-1783-4a14-a17a-5fc4fb191c2c, 'Krishna');
cqlsh> 
cqlsh> SELECT * FROM cassandratutorial.employee;

 id                                   | first_name
--------------------------------------+------------
 5987fd93-1783-4a14-a17a-5fc4fb191c2c |    Krishna

(1 rows)




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