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Benjamin Lerer commented on CASSANDRA-7281: ------------------------------------------- [~marcinszymaniuk] Great! Thanks > SELECT on tuple relations are broken for mixed ASC/DESC clustering order > ------------------------------------------------------------------------ > > Key: CASSANDRA-7281 > URL: https://issues.apache.org/jira/browse/CASSANDRA-7281 > Project: Cassandra > Issue Type: Bug > Reporter: Sylvain Lebresne > Assignee: Marcin Szymaniuk > Fix For: 2.1.x > > Attachments: > 0001-CASSANDRA-7281-SELECT-on-tuple-relations-are-broken-.patch, > 0001-CASSANDRA-7281-SELECT-on-tuple-relations-are-broken-v2.patch, > 0001-CASSANDRA-7281-SELECT-on-tuple-relations-are-broken-v3.patch > > > As noted on > [CASSANDRA-6875|https://issues.apache.org/jira/browse/CASSANDRA-6875?focusedCommentId=13992153&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13992153], > the tuple notation is broken when the clustering order mixes ASC and DESC > directives because the range of data they describe don't correspond to a > single continuous slice internally. To copy the example from CASSANDRA-6875: > {noformat} > cqlsh:ks> create table foo (a int, b int, c int, PRIMARY KEY (a, b, c)) WITH > CLUSTERING ORDER BY (b DESC, c ASC); > cqlsh:ks> INSERT INTO foo (a, b, c) VALUES (0, 2, 0); > cqlsh:ks> INSERT INTO foo (a, b, c) VALUES (0, 1, 0); > cqlsh:ks> INSERT INTO foo (a, b, c) VALUES (0, 1, 1); > cqlsh:ks> INSERT INTO foo (a, b, c) VALUES (0, 0, 0); > cqlsh:ks> SELECT * FROM foo WHERE a=0; > a | b | c > ---+---+--- > 0 | 2 | 0 > 0 | 1 | 0 > 0 | 1 | 1 > 0 | 0 | 0 > (4 rows) > cqlsh:ks> SELECT * FROM foo WHERE a=0 AND (b, c) > (1, 0); > a | b | c > ---+---+--- > 0 | 2 | 0 > (1 rows) > {noformat} > The last query should really return {{(0, 2, 0)}} and {{(0, 1, 1)}}. > For that specific example we should generate 2 internal slices, but I believe > that with more clustering columns we may have more slices. -- This message was sent by Atlassian JIRA (v6.3.4#6332)