ORA-00907：字符串查询中缺少右括号

Question

我不熟悉Oracle语法，但是当我将此字符串传递给.Net Oracle Command并尝试填充数据适配器时，却遇到了缺少右括号的错误。

 string cT = "SELECT 'PRODUCT' AS ItemType, 'x' || CAST(LPROD.QUANTITY AS VARCHAR2(50)), " +
                  "PNAME.NAME || ' (' || CAST((PRODS.\"SIZE\" AS VARCHAR2(50))) || ' ' || PRODS.MEASURE || ')' AS Name, " +
                  "PRODS.PRODUCT_ID as ProductSizeID, PRODS.UPC_CODE as BarCode FROM ORDERS ORDR, LI_PROD LPROD, PRODUCT_NAME PNAME, " +
                  "PRODUCT PRODS WHERE ORDR.INV_NUM = :Invoice_Num AND ORDR.ORDER_NUM = LPROD.ORDER_NUM " +
                  "AND LPROD.PRODUCT_ID = PRODS.PRODUCT_ID AND PRODS.PRODUCT_NAME_ID = PNAME.ID";

谁能发现可能引起此错误的错误？ 谢谢你的帮助。

Answer 1

尝试：

cast(prods."SIZE" as varchar2(50))

代替：

cast((prods."SIZE" as varchar2(50)))

Answer 2

我最近想出了完全相同的问题，找不到解决方案。 最终发生的是，我从SQLServer获得了以下试图转换为Oracle的代码。

CAST(col AS NVARCHAR(250)) AS col_name,

我可以通过将其更改为

CAST(col AS NVARCHAR2(250)) AS col_name,