st_asbinary

Penting

Fitur ini ada di Pratinjau Umum.

Mengembalikan nilai Input Geografi atau Geometri dalam format WKB.

Untuk fungsi Databricks SQL yang sesuai, lihat st_asbinary fungsi.

Syntax

from pyspark.databricks.sql import functions as dbf

dbf.st_asbinary(col1=<col1>, col2=<col2>)

Parameter-parameternya

Pengaturan	Tipe	Description
col1	pyspark.sql.Column atau str	Nilai geospasial, baik Geografi atau Geometri.
col2	pyspark.sql.Column atau str, opsional	Endianness opsional dari WKB output, NDR untuk little-endian (default) atau XDR untuk big-endian.

Examples

from pyspark.databricks.sql import functions as dbf
from pyspark.sql.functions import hex
df = spark.createDataFrame([('LINESTRING(1 2,3 4)',)], ['wkt'])
df.select(hex(dbf.st_asbinary(dbf.st_geogfromtext('wkt'))).alias('result')).collect()

[Row(result='010200000002000000000000000000F03F000000000000004000000000000008400000000000001040')]

from pyspark.databricks.sql import functions as dbf
from pyspark.sql.functions import hex
df = spark.createDataFrame([('LINESTRING(1 2,3 4)', 'NDR',)], ['wkt', 'e'])
df.select(hex(dbf.st_asbinary(dbf.st_geogfromtext('wkt'), df.e)).alias('result')).collect()

[Row(result='010200000002000000000000000000F03F000000000000004000000000000008400000000000001040')]

from pyspark.databricks.sql import functions as dbf
from pyspark.sql.functions import hex
df = spark.createDataFrame([('LINESTRING(1 2,3 4)',)], ['wkt'])
df.select(hex(dbf.st_asbinary(dbf.st_geogfromtext('wkt'), 'XDR')).alias('result')).collect()

[Row(result='0000000002000000023FF0000000000000400000000000000040080000000000004010000000000000')]