[SPARK-7321][SQL] Add Column expression for conditional statements #5932
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Can one of the admins verify this patch? |
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@kaka1992 I think it's supposed to be when(df.age == 1, "one").when(df.age == 2, "two").otherwise("unknown") |
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@rxin This would be weird in scala as |
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Scala also supports df("age"). I think we can add a separate function later on that does what you are proposing here, but that's not the "when" function. |
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@kaka1992 would you have time to update this? |
rxin
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[SPARK-7321][SQL] Add Column expression for conditional statements
asfgit
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May 13, 2015
…hen/otherwise) This builds on #5932 and should close #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 97dee31) Signed-off-by: Reynold Xin <rxin@databricks.com>
jeanlyn
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May 28, 2015
…hen/otherwise) This builds on apache#5932 and should close apache#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 apache#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 apache#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)
jeanlyn
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Jun 12, 2015
…hen/otherwise) This builds on apache#5932 and should close apache#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 apache#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 apache#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)
nemccarthy
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Jun 19, 2015
…hen/otherwise) This builds on apache#5932 and should close apache#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 apache#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 apache#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)
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Add case when else support in scala/java/python.
https://issues.apache.org/jira/browse/SPARK-7321
@rxin