分类：
2009-01-06 10:45:45
| DB2函数 135.AVG() 返回一组数值的平均值. SELECTAVG(SALARY)FROMBSEMPMS; 136.CORR(),CORRELATION() 返回一对数值的关系系数. SELECTCORRELATION(SALARY,BONUS)FROMBSEMPMS; 137.COUNT() 返回一组行或值的个数. SELECTCOUNT(*)FROMBSEMPMS; 138.COVAR(),COVARIANCE() 返回一对数值的协方差. SELECTCOVAR(SALARY,BONUS)FROMBSEMPMS; 139.MAX() 返回一组数值中的最大值. SELECTMAX(SALARY)FROMBSEMPMS; 140.MIN() 返回一组数值中的最小值. SELECTMIN(SALARY)FROMBSEMPMS; 141.STDDEV() 返回一组数值的标准偏差. SELECTSTDDEV(SALARY)FROMBSEMPMS; 142.SUM() 返回一组数据的和. SELECTSUM(SALARY)FROMBSEMPMS; 143.VAR(),VARIANCE() 返回一组数值的方差. SELECTVARIANCE(SALARY)FROMBSEMPMS; 144.ABS(),ABSVAL() 返回参数的绝对值. SELECTABS(-3.4)FROMBSEMPMS; 145.ACOS() 返回参数的反余弦值. SELECTACOS(0.9)FROMBSEMPMS; 146.ASCII() 返回整数参数最左边的字符的ASCII码. SELECTASCII('R')FROMBSEMPMS; 147.ASIN() 返回用弧度表示的角度的参数的反正弦函数. SELECTASIN(0.9)FROMBSEMPMS; 148.ATAN() 返回参数的反正切值,该参数用弧度表示的角度的参数. SELECTATAN(0.9)FROMBSEMPMS; |
