getSrid(地理學)

返回地理的SRID。

語法

getSrid()

退貨

int

Examples

from pyspark.databricks.sql import functions as dbf
df = spark.createDataFrame([ {'geogwkt': '''POINT(17 7)'''} ])
g = df.select(dbf.st_geogfromwkt(df.geogwkt).alias("geog")).head().geog
g.getSrid()
# 4326