2014年
-
编辑 删除
Oracle concept 学习 2--DATE类型的RR和YY
原文：RR is similar to YY (the last two digits of the year), but the century of the return value varies according to the specified two-digit year and the last two digits of the current year. Assume that in 1999 the database displays 01-JAN-11. If the date format uses RR, then 11 specifies 2011, w...
-
编辑 删除
Oracle concept 学习 1---精度和 维度
原文：PrecisionThe precision specifies the total number of digits. If a precision is not specified, then the column stores the values exactly as provided by the application without any rounding.ScaleThe scale specifies the number of digits from the decimal point to the least significant digit....
