TimestampToDateTime (Azure Cosmos DB)TimestampToDateTime (Azure Cosmos DB)
适用于：
SQL API
将指定的时间戳值转换为日期/时间。Converts the specified timestamp value to a DateTime.
语法Syntax
TimestampToDateTime (<Timestamp>)
参数Arguments
TimestampTimestamp
一个有符号的数值，即自 Unix 纪元以来当前已经过的毫秒数。A signed numeric value, the current number of milliseconds that have elapsed since the Unix epoch. 换句话说，返回自 1970 年 1 月 1 日星期四 00:00:00 以来已经过的毫秒数。In other words, the number of milliseconds that have elapsed since 00:00:00 Thursday, 1 January 1970.
返回类型Return types
以 YYYY-MM-DDThh:mm:ss.fffffffZ 格式返回 UTC 日期和时间 ISO 8601 字符串值，其中：Returns the UTC date and time ISO 8601 string value in the format YYYY-MM-DDThh:mm:ss.fffffffZ where:
| 格式Format | 描述Description | |
|---|---|---|
| YYYYYYYY | 四位数的年份four-digit year | |
| MMMM | 两位数的月份（01 = 1 月，依此类推。）two-digit month (01 = January, etc.) | |
| DDDD | 两位数的月份日期（01 到 31）two-digit day of month (01 through 31) | |
| TT | 时间元素开头的符号signifier for beginning of time elements | |
| hhhh | 两位数的小时（00 到 23）two-digit hour (00 through 23) | |
| MMmm | 两位数的分钟（00 到 59）two-digit minutes (00 through 59) | |
| ssss | 两位数的秒（00 到 59）two-digit seconds (00 through 59) | |
| .fffffff.fffffff | 七位数的小数秒seven-digit fractional seconds | |
| ZZ | UTC（协调世界时）指示符UTC (Coordinated Universal Time) designator |
备注Remarks
如果指定的时间戳值无效，TimestampToDateTime 将返回 undefined。TimestampToDateTime will return undefined if the timestamp value specified is invalid.
示例Examples
以下示例将时间戳转换为日期/时间：The following example converts the timestamp to a DateTime:
SELECT TimestampToDateTime(1594227912345) AS DateTime
[
{
"DateTime": "2020-07-08T17:05:12.3450000Z"
}
]