Schauer Justin,Amberg Philip,Hopkins, II Robert David
申请号：
US201213590110
公开号：
US9600522(B2)
申请日:
2012.08.20
申请国别(地区):
美国
年份:
2017
代理人:
Hickman Palmero Becker Bingham LLP
摘要：
Techniques are described for performing grouping and aggregation operations. In an embodiment, a request is received to aggregate data grouped by a first column. In response to receiving the request, values are loaded from the first column into an input cache. The values include values, from the first column, from a set of rows. A filter unit is programmed with logic to perform a comparison between a particular value, from the first column of a first row, and values in the first column of a plurality of rows, of the set of rows. Based on the comparison, a predicate result is generated that identifies rows, within the plurality of rows, that have a valued in the first column that matches the particular value. An aggregate value for a second column is generated by aggregating values, from the second column, of each of the rows identified by the predicate result.
