获取百分比计算并更新列

Question

我想从下面的查询中将 UG_length 和 AR_length 两列分别更新为 NE_length 的 80% 和 20%。

SELECT 
   CALCULATED_LENGTH AS NE_LENGTH , 
   (CASE WHEN RJ_CONSTRUCTION_METHODOLOGY NOT LIKE '%AERIAL%' OR RJ_CONSTRUCTION_METHODOLOGY IS NULL THEN NVL(CALCULATED_LENGTH,0) 
                  ELSE 0 END) AS UG_length,
    (CASE WHEN RJ_CONSTRUCTION_METHODOLOGY  LIKE '%AERIAL%' OR RJ_CONSTRUCTION_METHODOLOGY IS NULL THEN NVL(CALCULATED_LENGTH,0) 
                  ELSE 0 END) AS AR_length
   FROM NE.MV_SPAN@DB_LINK_NE_VIEWER;

在 Oracle 中最简单的方法是什么？

我需要 NE_length 列的百分比分叉。

Answer 1

您可以使用更新

update NE.MV_SPAN@DB_LINK_NE_VIEWER
   set UG_length  =  (CASE WHEN RJ_CONSTRUCTION_METHODOLOGY NOT LIKE '%AERIAL%' OR RJ_CONSTRUCTION_METHODOLOGY IS NULL THEN NVL(CALCULATED_LENGTH,0)*0.8
                  ELSE 0 END)
   , AR_length  = (CASE WHEN RJ_CONSTRUCTION_METHODOLOGY NOT LIKE '%AERIAL%' OR RJ_CONSTRUCTION_METHODOLOGY IS NULL THEN NVL(CALCULATED_LENGTH,0)*0.2
                  ELSE 0 END)

获取百分比计算并更新列

Get percentage calculation and update the column

mysql

oracle

percentage