```
public class MySqlFieldDefinition
extends Object
```
used to generate field definition in ddl with "desc table".

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`String`	`getColumnName()`
`String`	`getColumnType()`
`String`	`getDefaultValue()`
`String`	`getExtra()`
`boolean`	`isKey()`
`boolean`	`isNullable()`
`boolean`	`isUnique()`
`boolean`	`isUnsigned()`
`void`	`setColumnName(String columnName)`
`void`	`setColumnType(String columnType)`
`void`	`setDefaultValue(String defaultValue)`
`void`	`setExtra(String extra)`
`void`	`setKey(boolean key)`
`void`	`setNullable(boolean nullable)`
`void`	`setUnique(boolean unique)`
`String`	`toDdl()`

public void setColumnName(String columnName)

public void setColumnType(String columnType)

public void setNullable(boolean nullable)

public void setDefaultValue(String defaultValue)

public void setExtra(String extra)

public void setUnique(boolean unique)

Class MySqlFieldDefinition