| 1. | Analyze a query and return a list of field names
分析查询，并返回字段名称列表。 |
| 2. | Returns the length of the field in characters
将返回字段的长度（以字符为单位） 。 |
| 3. | Returns the number of available bytes in the field
返回字段中的可用字节数。 |
| 4. | Returns the number of available characters in the field
返回字段中可用字符的数目。 |
| 5. | Returns the length of the field in bytes
将返回字段的长度以字节为单位。 |
| 6. | Returns the length of the field , in bytes
以字节为单位返回字段的长度。 |
| 7. | Returns a signature helper for a field
返回字段的签名帮助器。 |
| 8. | Returns the signature of the field
返回字段的签名。 |
| 9. | Returns the value of the field that is being used by the interface as the basis of a connection between two
返回字段的值，该字段由接口用作两个 |
| 10. | Method does not return fields in a particular order , such as alphabetical or declaration order
方法不按特定的顺序返回字段，例如按字母顺序或声明顺序。 |
