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[SPARK-7286][SQL] Deprecate !== in favour of =!=
This PR replaces #9925 which had issues with CI. **Please see the original PR for any previous discussions.** ## What changes were proposed in this pull request? Deprecate the SparkSQL column operator !== and use =!= as an alternative. Fixes subtle issues related to operator precedence (basically, !== does not have the same priority as its logical negation, ===). ## How was this patch tested? All currently existing tests. Author: Jakob Odersky <jodersky@gmail.com> Closes #11588 from jodersky/SPARK-7286.
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- sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/dsl/package.scala 1 addition, 1 deletion...ain/scala/org/apache/spark/sql/catalyst/dsl/package.scala
- sql/core/src/main/scala/org/apache/spark/sql/Column.scala 20 additions, 2 deletionssql/core/src/main/scala/org/apache/spark/sql/Column.scala
- sql/core/src/test/scala/org/apache/spark/sql/ColumnExpressionSuite.scala 1 addition, 1 deletion...st/scala/org/apache/spark/sql/ColumnExpressionSuite.scala
- sql/core/src/test/scala/org/apache/spark/sql/JoinSuite.scala 2 additions, 2 deletionssql/core/src/test/scala/org/apache/spark/sql/JoinSuite.scala
- sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/parquet/ParquetFilterSuite.scala 7 additions, 7 deletions...ql/execution/datasources/parquet/ParquetFilterSuite.scala
- sql/hive/src/test/scala/org/apache/spark/sql/hive/ExpressionSQLBuilderSuite.scala 1 addition, 1 deletion...org/apache/spark/sql/hive/ExpressionSQLBuilderSuite.scala
- sql/hive/src/test/scala/org/apache/spark/sql/hive/orc/OrcFilterSuite.scala 1 addition, 1 deletion.../scala/org/apache/spark/sql/hive/orc/OrcFilterSuite.scala
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