class MySQLDialect_aiomysql(MySQLDialect_pymysql): (source)
Undocumented
Class Method | get |
Undocumented |
Class Method | import |
Import the DBAPI module that is used by this dialect. |
Method | create |
Build DB-API compatible connection arguments. |
Method | get |
Returns the connection object as returned by the external driver package. |
Method | is |
Return True if the given DB-API error indicates an invalid connection |
Class Variable | driver |
identifying name for the dialect's DBAPI |
Class Variable | is |
Whether or not this dialect is intended for asyncio use. |
Class Variable | supports |
indicates if the dialect supports server side cursors |
Class Variable | supports |
indicates if this dialect supports caching. |
Method | _found |
Undocumented |
Inherited from MySQLDialect_pymysql
:
Class Variable | description |
Undocumented |
Method | _extract |
Undocumented |
Inherited from MySQLDialect_mysqldb
(via MySQLDialect_pymysql
):
Method | __init__ |
Undocumented |
Method | do |
Provide an implementation of ``cursor.executemany(statement, parameters)``. |
Method | do |
ping the DBAPI connection and return True if the connection is usable. |
Method | get |
return a sequence of string isolation level names that are accepted by this dialect. |
Method | on |
return a callable which sets up a newly created DBAPI connection. |
Method | set |
Given a DBAPI connection, set its isolation level. |
Class Variable | default |
Undocumented |
Class Variable | supports |
indicates if Decimal objects are handled and returned for precision numeric types, or if floats are returned |
Class Variable | supports |
Indicate whether the dialect properly implements rowcount for ``UPDATE`` and ``DELETE`` statements when executed via executemany. |
Class Variable | supports |
Indicate whether the dialect properly implements rowcount for ``UPDATE`` and ``DELETE`` statements. |
Class Variable | supports |
Undocumented |
Method | _check |
Undocumented |
Method | _detect |
Sniff out the character set in use for connection results. |
Method | _parse |
Undocumented |
Instance Variable | _mysql |
Undocumented |
Inherited from MySQLDialect
(via MySQLDialect_pymysql
, MySQLDialect_mysqldb
):
Method | do |
Begin a two phase transaction on the given connection. |
Method | do |
Commit a two phase transaction on the given connection. |
Method | do |
Prepare a two phase transaction on the given connection. |
Method | do |
Recover list of uncommitted prepared two phase transaction identifiers on the given connection. |
Method | do |
Rollback a two phase transaction on the given connection. |
Method | get |
Return information about check constraints in ``table_name``. |
Method | get |
Return information about columns in ``table_name``. |
Method | get |
Return information about foreign_keys in ``table_name``. |
Method | get |
Return information about indexes in ``table_name``. |
Method | get |
Given a DBAPI connection, return its isolation level. |
Method | get |
Return information about the primary key constraint on table_name`. |
Method | get |
Return a list of all schema names available in the database. |
Method | get |
Return a list of all sequence names available in the database. |
Method | get |
Return the "comment" for the table identified by ``table_name``. |
Method | get |
Return a Unicode SHOW TABLES from a given schema. |
Method | get |
Return a dictionary of options specified when ``table_name`` was created. |
Method | get |
Return information about unique constraints in ``table_name``. |
Method | get |
Return plain or materialized view definition. |
Method | get |
Return a list of all non-materialized view names available in the database. |
Method | has |
Check the existence of a particular sequence in the database. |
Method | has |
For internal dialect use, check the existence of a particular table or view in the database. |
Method | initialize |
Called during strategized creation of the dialect with a connection. |
Class Variable | construct |
Optional set of argument specifiers for various SQLAlchemy constructs, typically schema items. |
Class Variable | cte |
target database, when given a CTE with an INSERT statement, needs the CTE to be below the INSERT |
Class Variable | div |
target database treats the / division operator as "floor division" |
Class Variable | inline |
Indicates the dialect supports comment DDL that's inline with the definition of a Table or Column. If False, this implies that ALTER must be used to set table and column comments. |
Class Variable | insert |
Undocumented |
Class Variable | max |
Undocumented |
Class Variable | max |
The maximum length of identifier names. |
Class Variable | max |
Undocumented |
Class Variable | name |
identifying name for the dialect from a DBAPI-neutral point of view (i.e. 'sqlite') |
Class Variable | sequences |
If True, indicates if the :paramref:`_schema.Sequence.optional` parameter on the :class:`_schema.Sequence` construct should signal to not generate a CREATE SEQUENCE. Applies only to dialects that support sequences... |
Class Variable | supports |
``True`` if the database supports ``ALTER TABLE`` - used only for generating foreign key constraints in certain circumstances |
Class Variable | supports |
Indicates the dialect supports comment DDL on tables and columns. |
Class Variable | supports |
dialect supports INSERT... VALUES (DEFAULT) syntax |
Class Variable | supports |
dialect supports INSERT... DEFAULT VALUES syntax |
Class Variable | supports |
Target database supports INSERT...VALUES with multiple value sets, i.e. INSERT INTO table (cols) VALUES (...), (...), (...), ... |
Class Variable | supports |
Indicates if the dialect supports a native boolean construct. This will prevent :class:`_types.Boolean` from generating a CHECK constraint when that type is used. |
Class Variable | supports |
Indicates if the dialect supports a native ENUM construct. This will prevent :class:`_types.Enum` from generating a CHECK constraint when that type is used in "native" mode. |
Class Variable | use |
if True, indicates "insertmanyvalues" functionality should be used to allow for ``insert_executemany_returning`` behavior, if possible. |
Instance Variable | delete |
if the dialect supports RETURNING with DELETE |
Instance Variable | identifier |
This element will refer to an instance of :class:`.IdentifierPreparer` once a :class:`.DefaultDialect` has been constructed. |
Instance Variable | insert |
if the dialect supports RETURNING with INSERT |
Instance Variable | is |
Undocumented |
Instance Variable | preparer |
a :class:`.IdentifierPreparer` class used to quote identifiers. |
Instance Variable | server |
a tuple containing a version number for the DB backend in use. |
Instance Variable | supports |
Undocumented |
Instance Variable | supports |
Indicates if the dialect supports CREATE SEQUENCE or similar. |
Class Method | _is |
Undocumented |
Method | _compat |
Proxy result rows to smooth over MySQL-Python driver inconsistencies. |
Method | _compat |
Proxy a result row to smooth over MySQL-Python driver inconsistencies. |
Method | _compat |
Proxy a result row to smooth over MySQL-Python driver inconsistencies. |
Method | _correct |
Undocumented |
Method | _describe |
Run DESCRIBE for a ``Table`` and return processed rows. |
Method | _detect |
Detect and adjust for the ANSI_QUOTES sql mode. |
Method | _detect |
Sniff out identifier case sensitivity. |
Method | _detect |
Pull the active COLLATIONS list from the server. |
Method | _detect |
Undocumented |
Method | _fetch |
Undocumented |
Method | _get |
Return the string name of the currently selected schema from the given connection. |
Method | _get |
Retrieve the server version info from the given connection. |
Method | _parse |
Undocumented |
Method | _parsed |
Undocumented |
Method | _sequences |
Undocumented |
Method | _set |
Undocumented |
Method | _setup |
Undocumented |
Method | _show |
Run SHOW CREATE TABLE for a ``Table``. |
Method | _warn |
Undocumented |
Instance Variable | _backslash |
Undocumented |
Instance Variable | _casing |
Undocumented |
Instance Variable | _connection |
Undocumented |
Instance Variable | _json |
Undocumented |
Instance Variable | _json |
Undocumented |
Instance Variable | _mariadb |
Undocumented |
Instance Variable | _needs |
Undocumented |
Instance Variable | _requires |
Undocumented |
Instance Variable | _server |
Undocumented |
Instance Variable | _sql |
Undocumented |
Property | _is |
Undocumented |
Property | _is |
Undocumented |
Property | _is |
Undocumented |
Property | _support |
Undocumented |
Property | _tabledef |
return the MySQLTableDefinitionParser, generate if needed. |
Inherited from DefaultDialect
(via MySQLDialect_pymysql
, MySQLDialect_mysqldb
, MySQLDialect
):
Class Method | load |
set up the provision.py module for this dialect. |
Method | connect |
Establish a connection using this dialect's DBAPI. |
Method | create |
Create a random two-phase transaction ID. |
Method | denormalize |
convert the given name to a case insensitive identifier for the backend if it is an all-lowercase name. |
Method | do |
Provide an implementation of ``connection.begin()``, given a DB-API connection. |
Method | do |
Provide an implementation of ``connection.close()``, given a DBAPI connection. |
Method | do |
Provide an implementation of ``connection.commit()``, given a DB-API connection. |
Method | do |
Provide an implementation of ``cursor.execute(statement, parameters)``. |
Method | do |
Provide an implementation of ``cursor.execute(statement)``. |
Method | do |
Release the named savepoint on a connection. |
Method | do |
Provide an implementation of ``connection.rollback()``, given a DB-API connection. |
Method | do |
Rollback a connection to the named savepoint. |
Method | do |
Create a savepoint with the given name. |
Method | do |
Provide an implementation of ``connection.close()`` that tries as much as possible to not block, given a DBAPI connection. |
Method | get |
Given a DBAPI connection, return its isolation level, or a default isolation level if one cannot be retrieved. |
Method | get |
return a Pool class to use for a given URL |
Method | get |
Return information about check constraints in all tables in the given ``schema``. |
Method | get |
Return information about columns in all tables in the given ``schema``. |
Method | get |
Return information about foreign_keys in all tables in the given ``schema``. |
Method | get |
Return information about indexes in in all tables in the given ``schema``. |
Method | get |
Return information about primary key constraints in all tables in the given ``schema``. |
Method | get |
Return information about the table comment in all tables in the given ``schema``. |
Method | get |
Return a dictionary of options specified when the tables in the given schema were created. |
Method | get |
Return information about unique constraints in all tables in the given ``schema``. |
Method | has |
Check the existence of a particular index name in the database. |
Method | has |
Check the existence of a particular schema name in the database. |
Method | normalize |
convert the given name to lowercase if it is detected as case insensitive. |
Method | reset |
Given a DBAPI connection, revert its isolation to the default. |
Method | set |
Establish execution options for a given connection. |
Method | set |
Establish execution options for a given engine. |
Method | type |
Provide a database-specific :class:`.TypeEngine` object, given the generic object which comes from the types module. |
Method | validate |
Undocumented |
Class Variable | colspecs |
A dictionary of TypeEngine classes from sqlalchemy.types mapped to subclasses that are specific to the dialect class. This dictionary is class-level only and is not accessed from the dialect instance itself. |
Class Variable | connection |
Undocumented |
Class Variable | default |
for INSERT... VALUES (DEFAULT) syntax, the token to put in the parenthesis. |
Class Variable | default |
the default value that will be rendered as the "START WITH" portion of a CREATE SEQUENCE DDL statement. |
Class Variable | delete |
dialect supports DELETE..RETURNING with executemany. |
Class Variable | delete |
if the dialect supports RETURNING with DELETE..FROM |
Class Variable | engine |
a mapping of string keys that can be in an engine config linked to type conversion functions. |
Class Variable | exclude |
set of DBAPI type objects that should be excluded in automatic cursor.setinputsizes() calls. |
Class Variable | favor |
for backends that support both a lastrowid and a RETURNING insert strategy, favor RETURNING for simple single-int pk inserts. |
Class Variable | has |
Whether or not this dialect has a separate "terminate" implementation that does not block or require awaiting. |
Class Variable | include |
set of DBAPI type objects that should be included in automatic cursor.setinputsizes() calls. |
Class Variable | insertmanyvalues |
Alternate to insertmanyvalues_page_size, will additionally limit page size based on number of parameters total in the statement. |
Class Variable | isolation |
Undocumented |
Class Variable | non |
Undocumented |
Class Variable | postfetch |
Undocumented |
Class Variable | preexecute |
True if 'implicit' primary key functions must be executed separately in order to get their value, if RETURNING is not used. |
Class Variable | requires |
Undocumented |
Class Variable | server |
deprecated; indicates if the dialect should attempt to use server side cursors by default |
Class Variable | supports |
Indicates if the dialect supports comment DDL on constraints. |
Class Variable | supports |
dialect supports INSERT () VALUES () |
Class Variable | supports |
target database supports IDENTITY |
Class Variable | supports |
Undocumented |
Class Variable | supports |
indicates if Python UUID() objects are handled natively by the driver for SQL UUID datatypes. |
Class Variable | supports |
Undocumented |
Class Variable | supports |
target database supports ORDER BY <labelname>, where <labelname> refers to a label in the columns clause of the SELECT |
Class Variable | supports |
Undocumented |
Class Variable | tuple |
target database supports tuple IN, i.e. (x, y) IN ((q, p), (r, z)) |
Class Variable | update |
dialect supports UPDATE..RETURNING with executemany. |
Class Variable | update |
if the dialect supports RETURNING with UPDATE |
Class Variable | update |
if the dialect supports RETURNING with UPDATE..FROM |
Class Variable | use |
if True, and use_insertmanyvalues is also True, INSERT statements that don't include RETURNING will also use "insertmanyvalues". |
Instance Variable | bind |
Undocumented |
Instance Variable | compiler |
Undocumented |
Instance Variable | dbapi |
A reference to the DBAPI module object itself. |
Instance Variable | default |
the isolation that is implicitly present on new connections |
Instance Variable | default |
the name of the default schema. This value is only available for supporting dialects, and is typically populated during the initial connection to the database. |
Instance Variable | insertmanyvalues |
Number of rows to render into an individual INSERT..VALUES() statement for :attr:`.ExecuteStyle.INSERTMANYVALUES` executions. |
Instance Variable | label |
optional user-defined max length for SQL labels |
Instance Variable | paramstyle |
the paramstyle to be used (some DB-APIs support multiple paramstyles). |
Instance Variable | positional |
True if the paramstyle for this Dialect is positional. |
Instance Variable | type |
legacy; this is a TypeCompiler class at the class level, a TypeCompiler instance at the instance level. |
Instance Variable | type |
instance of a :class:`.Compiled` class used to compile SQL type objects |
Property | dialect |
Undocumented |
Property | full |
Undocumented |
Property | insert |
dialect / driver / database supports some means of providing INSERT...RETURNING support when dialect.do_executemany() is used. |
Property | loaded |
same as .dbapi, but is never None; will raise an error if no DBAPI was set up. |
Property | supports |
True if this dialect supports sane rowcount even if RETURNING is in use. |
Method | _assert |
Undocumented |
Method | _builtin |
Undocumented |
Method | _check |
Perform a connection / server version specific check to determine the max_identifier_length. |
Method | _default |
Undocumented |
Method | _deliver |
convert executemany parameters for an INSERT into an iterator of statement/single execute values, used by the insertmanyvalues feature. |
Method | _do |
Undocumented |
Method | _ensure |
Undocumented |
Method | _gen |
Undocumented |
Method | _overrides |
Undocumented |
Method | _reset |
Undocumented |
Method | _set |
Undocumented |
Class Variable | _legacy |
Undocumented |
Instance Variable | _ischema |
Undocumented |
Instance Variable | _on |
Undocumented |
Instance Variable | _user |
Undocumented |
Property | _bind |
Undocumented |
Property | _dialect |
Undocumented |
Property | _supports |
internal evaluation for supports_statement_cache |
Property | _type |
Undocumented |
Inherited from Dialect
(via MySQLDialect_pymysql
, MySQLDialect_mysqldb
, MySQLDialect
, DefaultDialect
):
Class Method | engine |
A convenience hook called before returning the final :class:`_engine.Engine`. |
Class Method | get |
Given a URL, return the :class:`.Dialect` that will be used by an async engine. |
Class Method | get |
Given a URL, return the :class:`.Dialect` that will be used. |
Method | do |
invoke the cursor.setinputsizes() method with appropriate arguments |
Method | get |
Return a list of all materialized view names available in the database. |
Method | get |
Return a list of temporary table names on the given connection, if supported by the underlying backend. |
Method | get |
Return a list of temporary view names on the given connection, if supported by the underlying backend. |
Method | on |
return a callable which sets up a newly created DBAPI connection. |
Class Variable | ddl |
a :class:`.Compiled` class used to compile DDL statements |
Class Variable | dispatch |
Undocumented |
Class Variable | execute |
either the 'tuple' or 'list' type, depending on what cursor.execute() accepts for the second argument (they vary). |
Class Variable | execution |
a :class:`.ExecutionContext` class used to handle statement execution |
Class Variable | reflection |
Sequence of string names indicating keyword arguments that can be established on a :class:`.Table` object which will be passed as "reflection options" when using :paramref:`.Table.autoload_with`. |
Class Variable | statement |
a :class:`.Compiled` class used to compile SQL statements |
Class Variable | type |
a :class:`.Compiled` class used to compile SQL type objects |
Class Variable | _has |
Undocumented |
Import the DBAPI module that is used by this dialect. The Python module object returned here will be assigned as an instance variable to a constructed dialect under the name ``.dbapi``. .. versionchanged:: 2.0 The :meth:`.Dialect.import_dbapi` class method is renamed from the previous method ``.Dialect.dbapi()``, which would be replaced at dialect instantiation time by the DBAPI module itself, thus using the same name in two different ways. If a ``.Dialect.dbapi()`` classmethod is present on a third-party dialect, it will be used and a deprecation warning will be emitted.
Build DB-API compatible connection arguments. Given a :class:`.URL` object, returns a tuple consisting of a ``(*args, **kwargs)`` suitable to send directly to the dbapi's connect function. The arguments are sent to the :meth:`.Dialect.connect` method which then runs the DBAPI-level ``connect()`` function. The method typically makes use of the :meth:`.URL.translate_connect_args` method in order to generate a dictionary of options. The default implementation is:: def create_connect_args(self, url): opts = url.translate_connect_args() opts.update(url.query) return [[], opts] :param url: a :class:`.URL` object :return: a tuple of ``(*args, **kwargs)`` which will be passed to the :meth:`.Dialect.connect` method. .. seealso:: :meth:`.URL.translate_connect_args`
Returns the connection object as returned by the external driver package. For normal dialects that use a DBAPI compliant driver this call will just return the ``connection`` passed as argument. For dialects that instead adapt a non DBAPI compliant driver, like when adapting an asyncio driver, this call will return the connection-like object as returned by the driver. .. versionadded:: 1.4.24
indicates if this dialect supports caching. All dialects that are compatible with statement caching should set this flag to True directly on each dialect class and subclass that supports it. SQLAlchemy tests that this flag is locally present on each dialect subclass before it will use statement caching. This is to provide safety for legacy or new dialects that are not yet fully tested to be compliant with SQL statement caching. .. versionadded:: 1.4.5 .. seealso:: :ref:`engine_thirdparty_caching`