無法在Hive中將String日期轉換為Unix時間戳

Question

我試圖執行以下查詢：

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，

我收到錯誤消息：

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

Answer 1

嘗試將參數轉換為unix_timestamp中的字符串