在Presto中,unix_timestamp函数可以接受一个日期时间字符串作为输入,并返回对应的UNIX时间戳。该函数的语法如下: unix_timestamp(string date, [string pattern]) 其中,`date`参数是待转换的日期时间字符串,`pattern`参数是可选择的格式化模式字符串,用于指定输入字符串的格式。如果未提供`pattern`参数,默认使用ISO ...
presto unixtimestamp转标准日期 用到presto两个函数 1. from_unixtime 2.format_datetime select'1566748800000', substr('1566748800000',1,10)asa, from_unixtime(cast(substr('1566748800000',1,10)asint))asb, --将13位毫秒级的unix timestamp截取到秒级别 format_datetime(from_unixtime(cast(substr('156674...
PRESTO: select to_unixtime(current_timestamp) -- 当前时间的时间戳,长度14位(包含小数点) select from_unixtime(1548654394172/1000) --时间会精确到毫秒:2019-01-28 13:46:34.000 参考链接: 什么是时间戳:http://www.cnblogs.com/yangqi/archive/2010/07/16/1778675.html UNIX时间戳:https://baike.baid...
I need help with something, SELECT TO_UNIXTIME(FROM_UNIXTIME(3.87111e+37)) give me as output 9223372036854800. this number 9223372036854800 will overflow if we try to store it in int64_t as milliseconds. presto shuffles serialize a times...
代码示例来源:origin: com.facebook.presto.cassandra/cassandra-server /** * Creates a type 1 UUID (time-based UUID) with the timestamp of @param when, in milliseconds. * * @return a UUID instance */ public static UUID getTimeUUID(long when) { return new UUID(createTime(fromUnixTimestamp...
代码示例来源:origin: io.prestosql.cassandra/cassandra-driver private static long getCurrentTimestamp() { while (true) { long now = fromUnixTimestamp(System.currentTimeMillis()); long last = lastTimestamp.get(); if (now > last) { if (lastTimestamp.compareAndSet(last, now)) return now;...
PRESTO: select to_unixtime(current_timestamp) -- 当前时间的时间戳,长度14位(包含小数点) select from_unixtime(1548654394172/1000) --时间会精确到毫秒:2019-01-28 13:46:34.000 参考链接: 什么是时间戳:http://www.cnblogs.com/yangqi/archive/2010/07/16/1778675.html ...