ST_CreateDuration

ST_CreateDuration takes an integer and a temporal unit and returns a duration tuple. The temporal unit can be milliseconds, seconds, minutes, hours, or days. The value must be a short or long integer. Both the value and unit can be specified as either literal values or columns.

The duration tuple can be used as a track offset to to query and split tracks.

Tracks are linestrings that represent the change in an entity's location over time. Each vertex in the linestring has a timestamp (stored as the M-value) and the vertices are ordered sequentially.

For more information on using tracks in GeoAnalytics Engine, see the core concept topic on tracks.

Function	Syntax
Python	`create_duration(value, unit)`
SQL	`ST_CreateDuration(value, unit)`

For more details, go to the GeoAnalytics Engine API reference for create_duration.

Examples

Python

SQL

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from geoanalytics.sql import functions as ST

data = [(55, "seconds"),(7, "minutes"),(82, "seconds")]

spark.createDataFrame(data, ["value", "units"]) \
     .select(ST.create_duration("value", "units").alias("create_duration")) \
     .show(truncate=False)

Result
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+---------------+
|create_duration|
+---------------+
|{55, second}   |
|{7, minute}    |
|{82, second}   |
+---------------+

Version table

Release	Notes
1.4.0	Function introduced

ST_CreateDuration

Examples

Version table

Related topics