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[SPARK-19025][SQL] Remove SQL builder for operators
## What changes were proposed in this pull request? With the new approach of view resolution, we can get rid of SQL generation on view creation, so let's remove SQL builder for operators. Note that, since all sql generation for operators is defined in one file (org.apache.spark.sql.catalyst.SQLBuilder), it’d be trivial to recover it in the future. ## How was this patch tested? N/A Author: jiangxingbo <jiangxb1987@gmail.com> Closes #16869 from jiangxb1987/SQLBuilder.
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- sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/CheckAnalysis.scala 1 addition, 1 deletion...rg/apache/spark/sql/catalyst/analysis/CheckAnalysis.scala
- sql/core/src/main/scala/org/apache/spark/sql/catalyst/SQLBuilder.scala 0 additions, 623 deletions...main/scala/org/apache/spark/sql/catalyst/SQLBuilder.scala
- sql/hive/src/test/scala/org/apache/spark/sql/catalyst/ExpressionToSQLSuite.scala 0 additions, 290 deletions.../org/apache/spark/sql/catalyst/ExpressionToSQLSuite.scala
- sql/hive/src/test/scala/org/apache/spark/sql/catalyst/LogicalPlanToSQLSuite.scala 0 additions, 1201 deletions...org/apache/spark/sql/catalyst/LogicalPlanToSQLSuite.scala
- sql/hive/src/test/scala/org/apache/spark/sql/catalyst/SQLBuilderTest.scala 0 additions, 29 deletions.../scala/org/apache/spark/sql/catalyst/SQLBuilderTest.scala
- sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/HiveComparisonTest.scala 2 additions, 52 deletions.../apache/spark/sql/hive/execution/HiveComparisonTest.scala
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