Reynold Xin 219a9043ef [SPARK-7321][SQL] Add Column expression for conditional statements (when/otherwise) ... This builds on https://github.com/apache/spark/pull/5932 and should close https://github.com/apache/spark/pull/5932 as well. As an example: ```python df.select(when(df['age'] == 2, 3).otherwise(4).alias("age")).collect() ``` Author: Reynold Xin <rxin@databricks.com> Author: kaka1992 <kaka_1992@163.com> Closes #6072 from rxin/when-expr and squashes the following commits: 8f49201 [Reynold Xin] Throw exception if otherwise is applied twice. 0455eda [Reynold Xin] Reset run-tests. bfb9d9f [Reynold Xin] Updated documentation and test cases. 762f6a5 [Reynold Xin] Merge pull request #5932 from kaka1992/IFCASE 95724c6 [kaka1992] Update 8218d0a [kaka1992] Update 801009e [kaka1992] Update 76d6346 [kaka1992] [SPARK-7321][SQL] Add Column expression for conditional statements (if, case) (cherry picked from commit 97dee313f2) Signed-off-by: Reynold Xin <rxin@databricks.com>		2015-05-12 21:44:16 -07:00
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docs	[SPARK-7572] [MLLIB] do not import Param/Params under pyspark.ml	2015-05-12 17:15:47 -07:00
lib	[SPARK-2305] [PySpark] Update Py4J to version 0.8.2.1	2014-07-29 19:02:06 -07:00
pyspark	[SPARK-7321][SQL] Add Column expression for conditional statements (when/otherwise)	2015-05-12 21:44:16 -07:00
test_support	[SPARK-4897] [PySpark] Python 3 support	2015-04-16 16:20:57 -07:00
.gitignore	[SPARK-3946] gitignore in /python includes wrong directory	2014-10-14 14:09:39 -07:00
run-tests	[SPARK-7487] [ML] Feature Parity in PySpark for ml.regression	2015-05-12 12:17:14 -07:00