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.
Limits the result count to the number specified.
Syntax
limit(num: int)
Parameters
| Parameter | Type | Description |
|---|---|---|
num |
int | Number of records to return. Will return this number of records or all records if the DataFrame contains less than this number of records. |
Returns
DataFrame: Subset of the records.
Examples
df = spark.createDataFrame(
[(14, "Tom"), (23, "Alice"), (16, "Bob")], ["age", "name"])
df.limit(1).show()
# +---+----+
# |age|name|
# +---+----+
# | 14| Tom|
# +---+----+
df.limit(0).show()
# +---+----+
# |age|name|
# +---+----+
# +---+----+