blocks|key|4808691|text|你可以使用像TIMESTAMP_SECONDS，TIMESTAMP_MILLIS，TIMESTAMP_MICROS这样的timestamp+conversion+functions|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4808692|例如，假设您的h.visitStartTime是从unix时代开始的微秒数。|4808693|SELECT+*
FROM+main_table+h
INNER+JOIN+test.delay_pairs+d
ON+d.interval_start_time_utc+<+TIMESTAMP_MICROS(h.visitStartTime)
AND+TIMESTAMP_MICROS(h.visitStartTime)+<+d.interval_end_time_utc++|code-block|syntax|javascript|4808694|entityMap|0|LINK|mutability|MUTABLE|url|https://cloud.google.com/bigquery/sql-reference/functions-and-operators#additional-date-and-timestamp-conversion-functions^0|6|H|O|G|15|G|1O|U|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]|$9|X|A|Y|B|C]|$9|Z|A|10|B|C]]|D|@$9|11|A|12|1|13]]|E|$]]|$1|F|3|G|5|6|7|14|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|15|8|@]|D|@]|E|$K|L]]|$1|M|3|-4|5|6|7|16|8|@]|D|@]|E|$]]]|N|$O|$5|P|Q|R|E|$S|T]]]]

You can use <a href="https://cloud.google.com/bigquery/sql-reference/functions-and-operators#additional-date-and-timestamp-conversion-functions" rel="noreferrer">timestamp conversion functions</a> like <code>TIMESTAMP_SECONDS</code>, <code>TIMESTAMP_MILLIS</code>, <code>TIMESTAMP_MICROS</code>

for example, assuming your h.visitStartTime is microseconds since the unix epoch

<pre><code>SELECT *
FROM main_table h
INNER JOIN test.delay_pairs d
ON d.interval_start_time_utc &lt; TIMESTAMP_MICROS(h.visitStartTime)
AND TIMESTAMP_MICROS(h.visitStartTime) &lt; d.interval_end_time_utc 
</code></pre>

blocks|key|231414|text|对于标准+sql，您可以使用其中之一，具体取决于精度：|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|231415|231416|DATE_FROM_UNIX_DATE+-从天时期到date|unordered-list-item|CODE|231417|TIMESTAMP_SECONDS+-从秒时期到timestamp|231418|TIMESTAMP_MILLIS+-从毫秒时期到timestamp|231419|TIMESTAMP_MICROS+-从微秒时期到时间戳|231420|231421|请参阅此处的文档：https://cloud.google.com/bigquery/docs/reference/standard-sql/functions-and-operators#timestamp_seconds|231422|使用遗留+sql，您只需使用TIMESTAMP函数并乘以或除以1000，即可将其转换为所需的纪元类型：|231423|SELECT+
++TIMESTAMP(epoch_in_millis+/+1000)+AS+datetime
FROM+
++my_table|code-block|syntax|javascript|231424|entityMap|0|LINK|mutability|MUTABLE|url|https://cloud.google.com/bigquery/docs/reference/standard-sql/functions-and-operators#timestamp_seconds^0|2|2|0|0|0|J|0|0|H|0|0|G|0|0|G|0|0|9|2V|0|0|2|2|E|9|0|0^^$0|@$1|2|3|4|5|6|7|18|8|@$9|19|A|1A|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|1B|8|@]|D|@]|E|$]]|$1|G|3|H|5|I|7|1C|8|@$9|1D|A|1E|B|J]]|D|@]|E|$]]|$1|K|3|L|5|I|7|1F|8|@$9|1G|A|1H|B|J]]|D|@]|E|$]]|$1|M|3|N|5|I|7|1I|8|@$9|1J|A|1K|B|J]]|D|@]|E|$]]|$1|O|3|P|5|I|7|1L|8|@$9|1M|A|1N|B|J]]|D|@]|E|$]]|$1|Q|3|-4|5|6|7|1O|8|@]|D|@]|E|$]]|$1|R|3|S|5|6|7|1P|8|@]|D|@$9|1Q|A|1R|1|1S]]|E|$]]|$1|T|3|U|5|6|7|1T|8|@$9|1U|A|1V|B|C]|$9|1W|A|1X|B|J]]|D|@]|E|$]]|$1|V|3|W|5|X|7|1Y|8|@]|D|@]|E|$Y|Z]]|$1|10|3|-4|5|6|7|1Z|8|@]|D|@]|E|$]]]|11|$12|$5|13|14|15|E|$16|17]]]]

With standard sql you can use one of those, depending on precision:

<ul>
<li><code>DATE_FROM_UNIX_DATE</code> - from days epoch to date</li>
<li><code>TIMESTAMP_SECONDS</code> - from seconds epoch to timestamp</li>
<li><code>TIMESTAMP_MILLIS</code> - from milliseconds epoch to timestamp</li>
<li><code>TIMESTAMP_MICROS</code> - from microseconds epoch to timestamp</li>
</ul>

See documentation here: <a href="https://cloud.google.com/bigquery/docs/reference/standard-sql/functions-and-operators#timestamp_seconds" rel="noreferrer">https://cloud.google.com/bigquery/docs/reference/standard-sql/functions-and-operators#timestamp_seconds</a>

With legacy sql you can just use <code>TIMESTAMP</code> function and multiply or divide by 1000 to bring it to needed epoch type:

<pre><code>SELECT 
 TIMESTAMP(epoch_in_millis / 1000) AS datetime
FROM 
 my_table
</code></pre>

I'm trying to range-join two tables, like so

<pre><code>SELECT *
FROM main_table h
INNER JOIN
 test.delay_pairs d
ON
 d.interval_start_time_utc &lt; h.visitStartTime
 AND h.visitStartTime &lt; d.interval_end_time_utc
</code></pre>

where <code>h.visitStartTime</code> is an <code>INT64</code> epoch and <code>d.interval_start_time_utc</code> and <code>d.interval_end_time_utc</code> are proper <code>TIMESTAMP</code>s.

The above fails with

<pre><code>No matching signature for operator &lt; for argument types: TIMESTAMP, INT64. Supported signature: ANY &lt; ANY
</code></pre>

Neither wrapping <code>h.visitStartTime</code> in <code>TIMESTAMP()</code> nor <code>CAST(d.interval_start_time_utc AS INT64)</code> work. How do I make the two comparable in BigQuery's Standard SQL dialect?

BigQuery: convert epoch to TIMESTAMP

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我正在尝试范围连接两个表，如下所示SELECT *FROM main_table hINNER JOIN test.delay_pairs dON d.interval_start_time_utc < h.visitStartTime AND h.visitStartTime < d.interva...

问BigQuery:将纪元转换为时间戳
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