Expert Apache Cassandra Administration by Sam R. Alapati

Author:Sam R. Alapati
Language: eng
Format: epub
ISBN: 9781484231265
Publisher: Apress, Berkeley, CA

You can’t use the INSERT statement to load data into a counter column; instead, you must use the UPDATE statement to both insert and modify a counter column’s values.

The following example shows how to create a counter column :

CREATE TABLE popular_count (

id UUID PRIMARY KEY,

popularity counter

);

Altering a Table

You can modify a table structure or its options by executing an ALTER TABLE statement. The ALTER TABLE statement allows you to do the following.You can change the type of a column, as shown here:

ALTER TABLE customers ALTER lastKnownAddress TYPE UUID;

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