资讯

SUM(monthly_cases) over (Order by record_month rows between unbounded preceding and 1 preceding), monthly_cases*100.0/SUM(monthly_cases) over (Order by record_month ...
JOINs are long-standing SQL headaches. As the number of tables to be joined increases, coding becomes error prone. The complicated statements for achieving JOINs make ...
Abstract: Large data analysis is an important topic in cloud computing. Large-scale data analysis requires complex data analysis, such as Theta-Join, which includes equi-join and nonequi-join. On the ...