select to_date(to_number(to_char(created_on_date,'MMDDYYYY')),'MMDDYYYY') from is_mdm_customer
以上查詢是給如何日期列轉換爲MMDDYYYY格式比較MMDDYYYY格式的其他表中的列
Error starting at line 1 in command:
select to_date(to_number(to_char(created_on_date,'MMDDYYYY')),'MMDDYYYY') from is_mdm_customer
Error report:
SQL Error: ORA-01843: not a valid month
01843. 00000 - "not a valid month"
*Cause:
*Action:
什麼樣的數據類型是你的「日期」?你並沒有像VARCHAR那樣保持他們!? – MatBailie
什麼哦你想用'to_xxx'函數嵌套做什麼? –