[ https://issues.apache.org/jira/browse/HADOOP-1608?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Edward Yoon updated HADOOP-1608: -------------------------------- Description: Development of relational algebra operators has begun. * Projection ** selects a subset of the columnfamilies of a relation ** Result = π ~column_list~ (Relation) {code} Hbase > Result = Relation.Projection('year','legnth'); Hbase > save Result into table('result'); {code} * Selection ** See : HADOOP-2003 issue's description {code} Hbase> Result = Relation.Selection(length > 100 and studioName = 'Fox'); Hbase> save Result into table('result'); {code} * Group ** more details about 'GROUP' operation will be handled in HADOOP-1658 issue. * θ Join was: Development of relational algebra operators has begun. * Projection ** selects a subset of the columnfamilies of a relation ** Result = π ~column_list~ (Relation) {code} Hbase > Result = Relation.Projection('year','legnth'); Hbase > save Result into table('result'); {code} * Selection ** See : HADOOP-2003 issue's description {code} Hbase> Result = Relation.Selection(length > 100 and studioName = 'Fox'); Hbase> save Result into table('result'); {code} * Group ** more details about 'GROUP' operation will be handled in HADOOP-1658 issue. * Sort Summary: [Hbase Shell] Relational Algrebra Operators (was: [HbaseShell] Relational Algrebra Operators) > [Hbase Shell] Relational Algrebra Operators > ------------------------------------------- > > Key: HADOOP-1608 > URL: https://issues.apache.org/jira/browse/HADOOP-1608 > Project: Hadoop > Issue Type: Improvement > Components: contrib/hbase > Environment: All environments > Reporter: Edward Yoon > Priority: Minor > Fix For: 0.16.0 > > Attachments: patch_v01.txt, patch_v02.txt, patch_v03.txt, > patch_v04.txt, patch_v05.txt, patch_v06.txt, patch_v07.txt > > > Development of relational algebra operators has begun. > * Projection > ** selects a subset of the columnfamilies of a relation > ** Result = π ~column_list~ (Relation) > {code} > Hbase > Result = Relation.Projection('year','legnth'); > Hbase > save Result into table('result'); > {code} > * Selection > ** See : HADOOP-2003 issue's description > {code} > Hbase> Result = Relation.Selection(length > 100 and studioName = 'Fox'); > Hbase> save Result into table('result'); > {code} > * Group > ** more details about 'GROUP' operation will be handled in HADOOP-1658 > issue. > * θ Join -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.