How to update a column value in Cassandra Using CQL?

Question

I have created a keyspace with two column fields. One is Id and another one is name. I have inserted records in that keyspace. I want to update the name filed of a particular id.

I have used the following CQL query

UPDATE keyspaceName/columnFalmilyName SET name='name' WHERE id = 'id' 

While Executing this query it throws the Exception of

InvalidRequestException(why:line 1:56 mismatched input 'id' expecting K_KEY)...

If the query framed is wrong means, how to update the record using CQL?

Answer 1

Inserts and updates require specifying the row key, whereas you seem to be trying to use a column name. What key have you used when inserting new id,name pairs?

Refer to the CQL documentation on [http://cassandra.apache.org/doc/cql3/CQL.html][1]

<update-stmt> ::= UPDATE <tablename>
                  ( USING <option> ( AND <option> )* )?
                  SET <assignment> ( ',' <assignment> )*
                  WHERE <where-clause>
The UPDATE statement writes one or more columns for a given row in a table. The 
<where-clause> is used to select the row to update and must include all columns 
composing the PRIMARY KEY. Other columns values are specified through <assignment> 
after the SET keyword.

You need to take a look at your ColumnFamily definition and see what your primary key is.

Answer 2

你试过吗：UPDATE keyspaceName/columnFalmilyName SET name='name' WHERE id = (without '')