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The following page has been changed by udanax: http://wiki.apache.org/lucene-hadoop/HbaseShell ------------------------------------------------------------------------------ ||<#ececec> '''Command''' ||<#ececec> '''Explanation''' || ||SELECT ||<99%>'''Select''' command will retrieves rows from a table.[[BR]][[BR]]~-''SELECT table_name[[BR]][WHERE row="row_key"][[BR]][AND column="columnfamily_name:column_key"];[[BR]][AND time="Specified_Timestamp"];[[BR]][LIMIT=Number_of_Version];''-~ || + + + '''movieLog_table''' + ||Row Key ||<-12>Column Families || + ||<rowbgcolor="#ececec">title ||<-2> year ||<-2>length ||<-2>inColor ||<-2> studioName ||<-2> vote ||<-2> producer || + ||Star Wars ||year: || 1977 ||length: || 124 ||inColor: || true ||studioName: || Fox || vote:''user_1'' || 5 || producer: || Rick McCallum || + || || || || || || || || || || vote:''user_2'' || 2 || || || + ||Mighty Ducks ||year: || 1991 ||length: || 104 ||inColor: || true ||studioName: || Disney || vote:''user_1'' || 2 || producer: || Doug Claybourne || + || || || || || || || || || || vote:''user_3'' || 4 || || || + ||Wayne's World ||year: || 1992 ||length: || 95 ||inColor: || true ||studioName: || Paramount || vote:''user_2'' || 3 || producer: || Tom Keifer || + || || || || || || || || || || vote:''user_3'' || 4 || || || + + '''Projection''' + + [http://mirror.udanax.org/~udanax/rsync1/blog_udanax_org/udanax/280/o_ex2.gif] + + '''Selection''' + + [http://mirror.udanax.org/~udanax/rsync1/blog_udanax_org/udanax/280/o_ex3.gif] + + '''Example''' + + [http://mirror.udanax.org/~udanax/rsync1/blog_udanax_org/udanax/280/o_ex4.gif] + + + A = matrix(movieLog_table, vote); + + ||<rowbgcolor="#ececec"> ||user_1 ||user_2 ||user_3 || + ||<bgcolor="#ececec">Star Wars || 5 || 2 || 0 || + ||<bgcolor="#ececec">Mighty Ducks || 2 || 0 || 4 || + ||<bgcolor="#ececec">Wayne's World || 0 || 3 || 4 || + + + writing.. + + === Aggregation Functions === Generic one dimensional counting?? @@ -105, +141 @@ * [:udanax:Edward Yoon] [EMAIL PROTECTED] * [:boyo:Sewon Kim] [EMAIL PROTECTED] - * Wonhyung Cha [EMAIL PROTECTED] * [:mskim:Minsu Kim] [EMAIL PROTECTED]
