FeatureDerivationCaseSQLHive doesn't use INSERT INTO TABLE

[wangkuiyi]

I noticed that the FeatureDerivationCaseSQLHive SQL program uses INSERT INTO other than INSERT INTO TABLE.

https://github.com/sql-machine-learning/sqlflow/blob/f3c631e27e520310e1817300799967589a908c32/pkg/sql/testdata/feature_derivation_case.go#L45

Whereas other HiveQL programs use INSERT INTO TABLE. For example

https://github.com/sql-machine-learning/sqlflow/blob/f3c631e27e520310e1817300799967589a908c32/pkg/sql/testdata/iris_sql.go#L187

https://github.com/sql-machine-learning/sqlflow/blob/f3c631e27e520310e1817300799967589a908c32/pkg/sql/testdata/iris_sql.go#L306

https://github.com/sql-machine-learning/sqlflow/blob/f3c631e27e520310e1817300799967589a908c32/pkg/sql/testdata/churn_sql.go#L188

I noticed that https://github.com/sql-machine-learning/sqlflow/pull/1247/files#diff-55c6e51a3df3139780b8d2a289b85a03R45 adds FeatureDerivationCaseSQLHive.

@typhoonzero Should we change FeatureDerivationCaseSQLHive? Or, we don't have to because of HiveQL tolerant with the lack of keyword TABLE?

[wangkuiyi]

I Googled around and noticed that all results I found use INSERT INTO TABLE.

• https://stackoverflow.com/a/31656434/724872
• https://dwgeek.com/hive-insert-from-select-statement-and-examples.html
• https://www.dummies.com/programming/big-data/hadoop/hive-insert-command-examples/

[typhoonzero]

@typhoonzero Should we change FeatureDerivationCaseSQLHive? Or, we don't have to because of HiveQL tolerant with the lack of keyword TABLE?

I think it's better to keep all Hive SQL's all use INSERT INTO TABLE.

[wangkuiyi]

Done in #1595