def dbapi_lastrowid(fn):
""""target backend includes a 'lastrowid' accessor on the DBAPI
cursor object.
"""
return fails_on_everything_except('mysql+mysqldb', 'mysql+oursql',
'sqlite+pysqlite', 'mysql+pymysql')(fn)
def emulated_lastrowid(fn):
""""target dialect retrieves cursor.lastrowid or an equivalent
after an insert() construct executes.
"""
return fails_on_everything_except('mysql+mysqldb', 'mysql+oursql',
'sqlite+pysqlite', 'mysql+pymysql',
'mssql+pyodbc', 'mssql+mxodbc')(fn)
def reflects_pk_names(fn):
"""Target driver reflects the name of primary key constraints."""
return _chain_decorators_on(
fn,
fails_on_everything_except('postgresql', 'oracle')
)
def nullsordering(fn):
"""Target backends that support nulls ordering."""
return _chain_decorators_on(
fn,
fails_on_everything_except('postgresql', 'oracle', 'firebird')
)
