SQLAlchemy.exc部分エラーまとめ

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class ArgumentError(SQLAlchemyError):
    """
      ：
    Raised when an invalid or conflicting function argument is supplied.
    This error generally corresponds to construction time state errors.
                   。
                     。

      ：
              ，         ， ：    ，   
    """

class ObjectNotExecutableError(ArgumentError):   #         
    """
    Raised when an object is passed to .execute() that can't be executed as SQL.
          .execute（）     SQL  。
    """

class NoSuchModuleError(ArgumentError):   #        
    """
    Raised when a dynamically-loaded module (usually a database dialect)
    of a particular name cannot be located.

           （        ）            。
    """

class NoForeignKeysError(ArgumentError):   #     
    """
    Raised when no foreign keys can be located between two selectables
    during a join.
                        。
    """

class AmbiguousForeignKeysError(ArgumentError):   #     
    """
    Raised when more than one foreign key matching can be located
    between two selectables during a join.

                                。
    """

class IdentifierError(SQLAlchemyError):  #      
    """
    Raised when a schema name is beyond the max character limit
                    
    """

class TimeoutError(SQLAlchemyError):  #   
    """Raised when a connection pool times out on getting a connection."""


class InvalidRequestError(SQLAlchemyError):   #     
    """SQLAlchemy was asked to do something it can't do.

    This error generally corresponds to runtime state errors.

    SQLAlchemy             。               。
    """

class ResourceClosedError(InvalidRequestError):
    """An operation was requested from a connection, cursor, or other
    object that's in a closed state.
       、                    。
    """

class NoSuchColumnError(KeyError, InvalidRequestError):
    """A nonexistent column is requested from a ``RowProxy``."""


class NoSuchTableError(InvalidRequestError):
    """Table does not exist or is not visible to a connection."""