NonAggregationGroupByToDistinctQueryRewriter (Pinot Common 0.12.1 API)

java.lang.Object
- org.apache.pinot.sql.parsers.rewriter.NonAggregationGroupByToDistinctQueryRewriter

All Implemented Interfaces:

QueryRewriter
```
public class NonAggregationGroupByToDistinctQueryRewriter
extends Object
implements QueryRewriter
```
Rewrite non-aggregation group-by query to distinct query. The query can be rewritten only if select expression set and group-by expression set are the same. E.g. SELECT col1, col2 FROM foo GROUP BY col1, col2 --> SELECT DISTINCT col1, col2 FROM foo SELECT col1, col2 FROM foo GROUP BY col2, col1 --> SELECT DISTINCT col1, col2 FROM foo SELECT col1 + col2 FROM foo GROUP BY col1 + col2 --> SELECT DISTINCT col1 + col2 FROM foo SELECT col1 AS c1 FROM foo GROUP BY col1 --> SELECT DISTINCT col1 AS c1 FROM foo SELECT col1, col1 AS c1, col2 FROM foo GROUP BY col1, col2 --> SELECT DISTINCT col1, col1 AS ci, col2 FROM foo Unsupported queries: SELECT col1 FROM foo GROUP BY col1, col2 (not equivalent to SELECT DISTINCT col1 FROM foo) SELECT col1 + col2 FROM foo GROUP BY col1, col2 (not equivalent to SELECT col1 + col2 FROM foo)

- Constructor Summary
  
  Constructors
  Constructor Description
  
  NonAggregationGroupByToDistinctQueryRewriter()
- Method Summary
  
  Modifier and Type Method Description
  
  PinotQuery rewrite(PinotQuery pinotQuery)
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - NonAggregationGroupByToDistinctQueryRewriter
```
public NonAggregationGroupByToDistinctQueryRewriter()
```
- Method Detail
  - rewrite
```
public PinotQuery rewrite(PinotQuery pinotQuery)
```
    Specified by:
    
    rewrite in interface QueryRewriter