Slice deletes are not supported currently. It is being worked on.
https://issues.apache.org/jira/browse/CASSANDRA-3708
-Jeremiah
On May 14, 2012, at 12:18 PM, Roland Mechler wrote:
I have a table with a 3 part composite key and I want to delete rows based on
the first 2 parts of the key. SELECT works using 2 parts of the key, but DELETE
fails with the error:
Bad Request: Missing mandatory PRIMARY KEY part part3
(see details below). Is there a reason why deleting based on the first 2 parts
should not work? I.e., is it just currently not supported, or is it a permanent
limitation?
Note that deleting based on just the first part of the key will work… deletes
all matching rows.
cqlsh:Keyspace1> CREATE TABLE MyTable (part1 text, part2 text, part3 text, data
text, PRIMARY KEY(part1, part2, part3));
cqlsh:Keyspace1> INSERT INTO MyTable (part1, part2, part3, data) VALUES (‘a’,
‘b’, ‘c’, ‘d’);
cqlsh:Keyspace1> SELECT * FROM MyTable WHERE part1 = ‘a’ AND part2 = ‘b’;
part1 | part2 | part3 | data
——-+——-+——-+——
a | b | c | d
cqlsh:Keyspace1> DELETE FROM MyTable WHERE part1 = ‘a’ AND part2 = ‘b’;
Bad Request: Missing mandatory PRIMARY KEY part part3
cqlsh:Keyspace1> DELETE data FROM MyTable WHERE part1 = ‘a’ AND part2 = ‘b’;
Bad Request: Missing mandatory PRIMARY KEY part part3
cqlsh:Keyspace1> DELETE FROM MyTable WHERE part1 = ‘a’;
cqlsh:Keyspace1> SELECT * FROM MyTable WHERE part1 = ‘a’ AND part2 = ‘b’;
cqlsh:Keyspace1>
-Roland
