無法字符串轉換日期unix時間戳在蜂巢

Question

我試圖執行下面的查詢：

SELECT 
    L_RETURNFLAG, 
    L_LINESTATUS, 
    SUM(L_QUANTITY) AS SUM_QTY, 
    SUM(L_EXTENDEDPRICE) AS SUM_BASE_PRICE, 
    SUM(L_EXTENDEDPRICE * (1 - L_DISCOUNT)) AS SUM_DISC_PRICE, 
    SUM(L_EXTENDEDPRICE * (1 - L_DISCOUNT) * (1 + L_TAX)) AS SUM_CHARGE, 
    AVG(L_QUANTITY) AS AVG_QTY, 
    AVG(L_EXTENDEDPRICE) AS AVG_PRICE, 
    AVG(L_DISCOUNT) AS AVG_DISC, 
    COUNT(*) AS COUNT_ORDER 
FROM 
    LINEITEM 
WHERE 
    unix_timestamp(L_SHIPDATE, 'yyyy-MM-dd')>1000 
GROUP BY 
    L_RETURNFLAG, 
    L_LINESTATUS 
ORDER BY 
    L_RETURNFLAG, 
    L_LINESTATUS; 

但是，

我收到錯誤：

The function 'unix_timestamp' with the given argument types cannot be found. 

Answer 1

嘗試將參數強制轉換爲unix_timestamp中的字符串