def except_(fn):
"""Target database must support EXCEPT or equivalent (i.e. MINUS)."""
return fails_if([
"firebird", "mysql", "sybase", "informix"
], 'no support for EXCEPT')(fn)
def offset(fn):
"""Target database must support some method of adding OFFSET or
equivalent to a result set."""
return fails_if([
"sybase"
], 'no support for OFFSET or equivalent')(fn)
def intersect(fn):
"""Target database must support INTERSECT or equivalent."""
return fails_if([
"firebird", "mysql", "sybase", "informix"
], 'no support for INTERSECT')(fn)