DeltaColumnBuilder (Delta Lake 2.1.0 JavaDoc)

Object
- io.delta.tables.DeltaColumnBuilder

```
public class DeltaColumnBuilder
extends Object
```
:: Evolving ::
Builder to specify a table column.
See DeltaTableBuilder for examples.

Since:

1.0.0

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`org.apache.spark.sql.types.StructField`	`build()`	:: Evolving ::
`DeltaColumnBuilder`	`comment(String comment)`	:: Evolving ::
`DeltaColumnBuilder`	`dataType(String dataType)`	:: Evolving ::
`DeltaColumnBuilder`	`dataType(org.apache.spark.sql.types.DataType dataType)`	:: Evolving ::
`DeltaColumnBuilder`	`generatedAlwaysAs(String expr)`	:: Evolving ::
`DeltaColumnBuilder`	`nullable(boolean nullable)`	:: Evolving ::

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - build
```
public org.apache.spark.sql.types.StructField build()
```
    :: Evolving ::
    Build the column as a structField.
    
    Since:
    
    1.0.0
  - comment
```
public DeltaColumnBuilder comment(String comment)
```
    :: Evolving ::
    Specify a column comment.
    
    Parameters:
    
    comment - string column description
    
    Since:
    
    1.0.0
  - dataType
```
public DeltaColumnBuilder dataType(String dataType)
```
    :: Evolving ::
    Specify the column data type.
    
    Parameters:
    
    dataType - string column data type
    
    Since:
    
    1.0.0
  - dataType
```
public DeltaColumnBuilder dataType(org.apache.spark.sql.types.DataType dataType)
```
    :: Evolving ::
    Specify the column data type.
    
    Parameters:
    
    dataType - DataType column data type
    
    Since:
    
    1.0.0
  - generatedAlwaysAs
```
public DeltaColumnBuilder generatedAlwaysAs(String expr)
```
    :: Evolving ::
    Specify a expression if the column is always generated as a function of other columns.
    
    Parameters:
    
    expr - string the the generation expression
    
    Since:
    
    1.0.0
  - nullable
```
public DeltaColumnBuilder nullable(boolean nullable)
```
    :: Evolving ::
    Specify whether the column can be null.
    
    Parameters:
    
    nullable - boolean whether the column can be null or not.
    
    Since:
    
    1.0.0