oracle 毫秒转时间转字符

SELECT
    TO_CHAR( 1565677503399 / ( 1000 * 60 * 60 * 24 ) + TO_DATE( '1970-01-01 08:00:00', 'YYYY-MM-DD HH:MI:SS' ), 'YYYYMMDDHH24MISS' ) 
FROM
    dual

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