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[SPARK-8238][SPARK-8239][SPARK-8242][SPARK-8243][SPARK-8268][SQL]Add...
[SPARK-8238][SPARK-8239][SPARK-8242][SPARK-8243][SPARK-8268][SQL]Add ascii/base64/unbase64/encode/decode functions Add `ascii`,`base64`,`unbase64`,`encode` and `decode` expressions. Author: Cheng Hao <hao.cheng@intel.com> Closes #6843 from chenghao-intel/str_funcs2 and squashes the following commits: 78dee7d [Cheng Hao] base 64 -> base64 9d6f9f4 [Cheng Hao] remove the toString method for expressions ed5c19c [Cheng Hao] update code as comments 96170fc [Cheng Hao] scalastyle issues e2df768 [Cheng Hao] remove the unused import 491ce7b [Cheng Hao] add ascii/base64/unbase64/encode/decode functions
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- sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/FunctionRegistry.scala 5 additions, 0 deletions...apache/spark/sql/catalyst/analysis/FunctionRegistry.scala
- sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/stringOperations.scala 117 additions, 0 deletions...che/spark/sql/catalyst/expressions/stringOperations.scala
- sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/StringFunctionsSuite.scala 55 additions, 5 deletions...spark/sql/catalyst/expressions/StringFunctionsSuite.scala
- sql/core/src/main/scala/org/apache/spark/sql/functions.scala 93 additions, 0 deletionssql/core/src/main/scala/org/apache/spark/sql/functions.scala
- sql/core/src/test/scala/org/apache/spark/sql/DataFrameFunctionsSuite.scala 38 additions, 0 deletions.../scala/org/apache/spark/sql/DataFrameFunctionsSuite.scala
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