Nóta
Teastaíonn údarú chun rochtain a fháil ar an leathanach seo. Is féidir leat triail a bhaint as shíniú isteach nó eolairí a athrú.
Teastaíonn údarú chun rochtain a fháil ar an leathanach seo. Is féidir leat triail a bhaint as eolairí a athrú.
Returns the decompressed value of expr using Zstandard. Supports data compressed in both single-pass mode and streaming mode. On decompression failure, it throws an exception.
Syntax
from pyspark.sql import functions as dbf
dbf.zstd_decompress(input=<input>)
Parameters
| Parameter | Type | Description |
|---|---|---|
input |
pyspark.sql.Column or str |
The binary value to decompress. |
Returns
pyspark.sql.Column: A new column that contains an uncompressed value.
Examples
from pyspark.sql import functions as dbf
df = spark.createDataFrame([("KLUv/SCCpQAAaEFwYWNoZSBTcGFyayABABLS+QU=",)], ["input"])
df.select(dbf.zstd_decompress(dbf.unbase64(df.input)).cast("string").alias("result")).show(truncate=False)
+----------------------------------------------------------------------------------------------------------------------------------+
|result |
+----------------------------------------------------------------------------------------------------------------------------------+
|Apache Spark Apache Spark Apache Spark Apache Spark Apache Spark Apache Spark Apache Spark Apache Spark Apache Spark Apache Spark |
+----------------------------------------------------------------------------------------------------------------------------------+