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Selects column based on the column name specified as a regex and returns it as Column.
Syntax
colRegex(colName: str)
Parameters
| Parameter | Type | Description |
|---|---|---|
colName |
str | string, column name specified as a regex. |
Returns
Column
Examples
df = spark.createDataFrame([("a", 1), ("b", 2), ("c", 3)], ["Col1", "Col2"])
df.select(df.colRegex("`(Col1)?+.+`")).show()
# +----+
# |Col2|
# +----+
# | 1|
# | 2|
# | 3|
# +----+