Projection (shardingsphere-infra-binder 5.4.0 API)

All Known Implementing Classes:

AggregationDistinctProjection, AggregationProjection, ColumnProjection, DerivedProjection, ExpressionProjection, ParameterMarkerProjection, ShorthandProjection, SubqueryProjection
```
public interface Projection
```
Projection interface.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`Projection`	`cloneWithOwner(org.apache.shardingsphere.sql.parser.sql.common.value.identifier.IdentifierValue ownerIdentifier)`	Clone with owner.
`Optional<String>`	`getAlias()`	Get alias.
`String`	`getColumnLabel()`	Get columnLabel.
`String`	`getExpression()`	Get expression.

- Method Detail
  - getExpression
```
String getExpression()
```
    Get expression.
    
    Returns:
    
    expression
  - getAlias
```
Optional<String> getAlias()
```
    Get alias.
    
    Returns:
    
    alias
  - getColumnLabel
```
String getColumnLabel()
```
    Get columnLabel.
    
    Returns:
    
    columnLabel
  - cloneWithOwner
```
Projection cloneWithOwner(org.apache.shardingsphere.sql.parser.sql.common.value.identifier.IdentifierValue ownerIdentifier)
```
    Clone with owner.
    
    Parameters:
    
    ownerIdentifier - owner identifier
    
    Returns:
    
    new projection