假设以下数据集:Cassandra API相当于“SELECT ... FROM ... WHERE id IN('...','...','...');”
id age city phone
== === ==== =====
alfred 30 london 3281283
jeff 43 sydney 2342734
joe 29 tokyo 1283881
kelly 54 new york 2394929
molly 20 london 1823881
rob 39 sydney 4928381
得到以下结果集..
id age phone
== === =====
alfred 30 3281283
joe 29 1283881
molly 20 1823881
..用SQL一个会发出..
SELECT id, age, phone FROM dataset WHERE id IN ('alfred', 'joe', 'molly');
什么是相应的Cassandra API调用会在一个命令中产生相同的结果集?
除了jbellis答案:客户节俭在API部分的Cassandra维基页面上很好地解释了API:http://wiki.apache.org/cassandra/API – Schildmeijer 2010-03-15 15:19:39