錯誤 ORA-01858：在運行查詢時應為數字的位置發現了非數字字符

Question

01858：在需要數字的地方發現了非數字字符

select project_name, my_date, sum(records_number) as 
from (
select project_name, 
  case 
    when :P33_RG = 'Daily' then
      to_char(date_sys, 'MM/DD/YYYY') 
    when :P33_RG = 'Weekly' then
      to_char(TRUNC(date_sys, 'IW'), 'MM/DD/YYYY')
  end as my_date,  
  BATCH.RECORDS_NUMBER
from BATCH
where date_sys between :P33_START_DATE and :P33_END_DATE
) my_records
group by project_name, my_date
;

:P33_START_DATE 和:P33_END_DATE 具有來自日期選擇器的日期值，而:P33_RG 是一個 varchar。

任何修復錯誤的建議將不勝感激！ 謝謝

Answer 1

我會說您應該使用適當的格式模型將日期選擇器值“轉換”為DATE數據類型。 如果它遵循您已經發布的內容，那就是

       WHERE date_sys BETWEEN TO_DATE ( :P33_START_DATE, 'mm/dd/yyyy')
                          AND TO_DATE ( :P33_END_DATE  , 'mm/dd/yyyy')