pyspark.sql.functions.broadcast

pyspark.sql.functions.broadcast(df: pyspark.sql.dataframe.DataFrame) → pyspark.sql.dataframe.DataFrame

Marks a DataFrame as small enough for use in broadcast joins.

New in version 1.6.0.

Changed in version 3.4.0: Supports Spark Connect.

Returns

DataFrame

DataFrame marked as ready for broadcast join.

Examples

>>> from pyspark.sql import types
>>> df = spark.createDataFrame([1, 2, 3, 3, 4], types.IntegerType())
>>> df_small = spark.range(3)
>>> df_b = broadcast(df_small)
>>> df.join(df_b, df.value == df_small.id).show()
+-----+---+
|value| id|
+-----+---+
|    1|  1|
|    2|  2|
+-----+---+

pyspark.sql.functions.lit pyspark.sql.functions.coalesce