在Oracle中創建虛擬視圖時的錯誤代碼

我是Oracle SQL的新手，對於我來說，我無法弄清楚爲什麼我繼續在代碼中出現錯誤「缺少右括號」。我尋找失蹤或額外的逗號和括號，但無法弄清楚。請幫助！我的查詢是下面：在Oracle中創建虛擬視圖時的錯誤代碼

CREATE VIEW PRODUCT_SUMMARY_V 
AS SELECT 
PROD_ID, 
EXTRACT (CALENDAR_YEAR FROM TIME_ID) "YEAR", 
EXTRACT (CALENDAR_MONTH_NAME FROM TIME_ID) "MONTH", 
SUM(AMOUNT_SOLD) "TOTAL_AMOUNT_SOLD", 
SUM(QUANTITY_SOLD) "TOTAL_QUANTITY_SOLD", 
ROUND(SUM(AMOUNT_SOLD)/SUM(QUANTITY_SOLD),2) "AVG_SALE_PRICE" 
FROM MY_SALES 
GROUP BY PROD_ID, CALENDAR_YEAR, CALENDAR_MONTH_NAME 
ORDER BY PROD_ID;

來源

2016-10-02 ASteinmetz

您與EXTRACT()功能的幫助下提取的TIME_ID錯誤值。

SQL> CREATE VIEW PRODUCT_SUMMARY_V 
    AS SELECT 
    PROD_ID, 
    EXTRACT (YEAR FROM TIME_ID) "YEAR", 
    EXTRACT (MONTH FROM TIME_ID) "MONTH", 
    SUM(AMOUNT_SOLD) "TOTAL_AMOUNT_SOLD", 
    SUM(QUANTITY_SOLD) "TOTAL_QUANTITY_SOLD", 
    ROUND(SUM(AMOUNT_SOLD)/ SUM(QUANTITY_SOLD),2) "AVG_SALE_PRICE" 
    FROM MY_SALES 
    GROUP BY PROD_ID, EXTRACT (YEAR FROM TIME_ID), EXTRACT (MONTH FROM TIME_ID) 
    ORDER BY PROD_ID; 

View created.

但是錯誤消息是誤導，因爲EXTRACT函數的參數不正確，並把它作爲一個table.The語法檢查器的列對待語句SELECT EXTRACT(CALENDAR_YEAR FROM TIME_ID。

SQL> SELECT EXTRACT(CALENDAR_YEAR FROM TIME_ID; 
SELECT EXTRACT(CALENDAR_YEAR FROM TIME_ID 
          * 
ERROR at line 1: 
ORA-00907: missing right parenthesis

詳情：Extract

來源

2016-10-02 02:48:12 JSapkota

在Oracle中創建虛擬視圖時的錯誤代碼

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