Help Center/ Data Lake Insight/ Spark SQL Syntax Reference/ Built-In Functions/ Date Functions/ from_unixtime
Updated on 2023-10-25 GMT+08:00
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from_unixtime

This function is used to convert a timestamp represented by a numeric UNIX value to a date value.

Syntax

from_unixtime(bigint unixtime)

Parameters

Table 1 Parameter

Parameter

Mandatory

Type

Description

unixtime

Yes

BIGINT

Timestamp to be converted, in UNIX format

Set this parameter to the first 10 digits of the timestamp in UNIX format.

Return Values

The return value is of the STRING type, in the yyyy-mm-dd hh:mi:ss format.

If the value of unixtime is NULL, NULL is returned.

Example Code

The value 2023-08-16 09:39:57 is returned.

select from_unixtime(1692149997);

The value NULL is returned.

select from_unixtime(NULL);
Example table data 
select unixdate, from_unixtime(unixdate) as timestamp_from_unixtime from database_t;
Output:
+------------------+------------------------------+
| unixdate              | timestamp_from_unixtime   |
+------------------+------------------------------+
| 1690944759224  | 2023-08-02 10:52:39           |
| 1690944999811  | 2023-08-02 10:56:39           |
| 1690945005458  | 2023-08-02 10:56:45           |
| 1690945011542  | 2023-08-02 10:56:51           |
| 1690945023151  | 2023-08-02 10:57:03           |
+------------------+------------------------------+
Parent topic: Date Functions