desc

Returns a sort expression for the target column in descending order. This function is used in sort and orderBy functions. Supports Spark Connect.

Syntax

from pyspark.databricks.sql import functions as dbf

dbf.desc(col=<col>)

Parameters

Parameter	Type	Description
col	pyspark.sql.Column or str	Target column to sort by in the descending order.

Returns

pyspark.sql.Column: The column specifying the sort order.

Examples

Example 1: Sort DataFrame by 'id' column in descending order.

from pyspark.databricks.sql import functions as dbf
df = spark.createDataFrame([(4, 'B'), (3, 'A'), (2, 'C')], ['id', 'value'])
df.sort(dbf.desc("id")).show()

+---+-----+
| id|value|
+---+-----+
|  4|    B|
|  3|    A|
|  2|    C|
+---+-----+

Example 2: Use desc in orderBy function to sort the DataFrame.

from pyspark.databricks.sql import functions as dbf
df = spark.createDataFrame([(4, 'B'), (3, 'A'), (2, 'C')], ['id', 'value'])
df.orderBy(dbf.desc("value")).show()

+---+-----+
| id|value|
+---+-----+
|  2|    C|
|  4|    B|
|  3|    A|
+---+-----+