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Rating Stats for

Xin Zhang

Rating
1494.39 (4,295,079th)

Reputation
68 (889,338th)

Page: 1

Title	Δ
Finding mean, standard deviation ,percentiles for all numeric varia...	-3.15
PostgreSQL/GreenPlum partition elimination and left join	+3.95
TSQL Parse XML document	-2.53
How do query joins work in MPP databases?	-3.88
Sum only one instance	0.00