I need the SQL query of the below question which can be written in python (pyspark).

Q1 - What months within the year 2018 saw the highest number of fire calls?

Attaching sample of data and the column names for reference.

StructField('CallNumber', IntegerType(), True),

StructField('UnitID', StringType(), True),

StructField('IncidentNumber', IntegerType(), True),

StructField('CallType', StringType(), True),

StructField('CallDate', StringType(), True),

StructField('WatchDate', StringType(), True),

StructField('CallFinalDisposition', StringType(), True),

StructField('AvailableDtTm', StringType(), True),

StructField('Address', StringType(), True),

StructField('City', StringType(), True),

StructField('Zipcode', IntegerType(), True),

StructField('Battalion', StringType(), True),

StructField('StationArea', StringType(), True),

StructField('Box', StringType(), True),

StructField('OriginalPriority', StringType(), True),

StructField('Priority', StringType(), True),

StructField('FinalPriority', IntegerType(), True),

StructField('ALSUnit', BooleanType(), True),

StructField('CallTypeGroup', StringType(), True),

StructField('NumAlarms', IntegerType(), True),

StructField('UnitType', StringType(), True),

StructField('UnitSequenceInCallDispatch', IntegerType(), True),

StructField('FirePreventionDistrict', StringType(), True),

StructField('SupervisorDistrict', StringType(), True),

StructField('Neighborhood', StringType(), True),

StructField('Location', StringType(), True),

StructField('RowID', StringType(), True),

StructField('Delay', FloatType(), True)])