ERROR: Unable to allocate sufficient memory. The present request for 687965K bytes could not be allocated, only 358202K were available. Note that the deficit amount is not
       equal to the amount of memory needed for a successful run. It does not reflect subsequent allocations by this or other processes.
ERROR: 由于内存不足，SAS 系统停止了对该步的处理。
WARNING: 数据集 WORK.REG_RESULT_1 可能不完整。该步停止时，共有 0 个观测和 0 个变量。