Question

我正在使用apex处理Oracle数据库驱动的Web应用程序。有一个P2_ROWS字段，其中包含从源sql查询中定义的数据表中选择的值列表。报表区域上有一个按钮，允许用户按特定顺序对值列表进行排序。为按钮分配动态操作。单击该按钮时，将执行带有查询顺序的PL / SQL，该查询应更改行的显示顺序。

源sql定义为：

select 
"PRODUCT_ID",
"PRODUCT_NAME",
"PRODUCT_DESCRIPTION",
"PRICE",
"PRODUCT_LOCATION",
dbms_lob.getlength("THUMBNAIL") as "THUMBNAIL"
 from   "PRODUCTS" 
where 
(   
    instr(upper("PRODUCT_NAME"), upper(nvl(:P2_REPORT_SEARCH, "PRODUCT_NAME"))) > 0
)

分配给按钮的PL / SQL是：

SELECT PRODUCTS.PRODUCT_ID, PRODUCTS.PRODUCT_NAME, PRODUCTS.PRODUCT_DESCRIPTION, PRODUCTS.PRICE, PRODUCTS.PRODUCT_LOCATION, dbms_lob.getlength("THUMBNAIL") as "THUMBNAIL"
INTO :P2_ROWS
FROM PRODUCTS
INNER JOIN TEMP_DISTANCES ON TEMP_DISTANCES.PRODUCT_ID = PRODUCTS.PRODUCT_ID
ORDER BY DISTANCE ASC;

单击该按钮时，应用程序将返回错误＆＃34; ORA-00947：没有足够的值ORA-06550＆＃34;。

你会如何解决这个问题？请随时发表评论，并随时提出任何改进建议。感谢。

Answer 1

正如@Scott所说，您尝试在一个标量变量中选择多个值。您应该定义几个变量或使用连接。

SELECT PRODUCTS.PRODUCT_ID, PRODUCTS.PRODUCT_NAME, PRODUCTS.PRODUCT_DESCRIPTION, PRODUCTS.PRICE, PRODUCTS.PRODUCT_LOCATION, dbms_lob.getlength("THUMBNAIL") as "THUMBNAIL"
  INTO :P2_PROID_ID, :P2_PROD_NAME, ...
  FROM PRODUCTS
       INNER JOIN TEMP_DISTANCES 
          ON TEMP_DISTANCES.PRODUCT_ID = PRODUCTS.PRODUCT_ID
 ORDER BY DISTANCE ASC;

或

SELECT PRODUCTS.PRODUCT_ID || ', ' || PRODUCTS.PRODUCT_NAME || ', ' || PRODUCTS.PRODUCT_DESCRIPTION || ', ' || PRODUCTS.PRICE ...
  INTO :P2_ROWS
  FROM PRODUCTS
       INNER JOIN TEMP_DISTANCES 
          ON TEMP_DISTANCES.PRODUCT_ID = PRODUCTS.PRODUCT_ID
 ORDER BY DISTANCE ASC;

Oracle APEX选择值到经典报告行

1 个答案: