def build_comparisons(s, ast, with_conversion):
qname, op, value = ast
owner, name, group = StatisticName.parse(qname,
default_activity_group=UNDEF)
if value is None:
if op == '=':
return get_source_ids_for_null(s, owner, name, group,
with_conversion), True
else:
return aliased(
union(*[
get_source_ids(s, owner, name, op, value, group, type)
for type in StatisticJournalType
if type != StatisticJournalType.STATISTIC
])).select(), False
elif isinstance(value, str):
return get_source_ids(s, owner, name, op, value, group,
StatisticJournalType.TEXT), False
elif isinstance(value, dt.datetime):
return get_source_ids(s, owner, name, op, value, group,
StatisticJournalType.TIMESTAMP), False
else:
qint = get_source_ids(s, owner, name, op, value, group,
StatisticJournalType.INTEGER)
qfloat = get_source_ids(s, owner, name, op, value, group,
StatisticJournalType.FLOAT)
return aliased(union(qint, qfloat)).select(), False
def eval(self, builder):
""" return a query object
"""
dbh = builder._get_dbh()
tokens = self.value[1:]
expr_1 = self.value[0].eval( builder )
while tokens:
op = tokens[0]
eval_2 = tokens[1].eval( builder )
tokens = tokens[2:]
if op == '|':
eval_1 = sqla.union(eval_1, eval_2)
elif op == '&':
eval_1 = sqla.intersect(eval_1, eval_2)
elif op == ':':
eval_1 = sqla.except_(
dbh.session().query(dbh.Sample.id).filter(
dbh.Sample.id.in_( sqla.union(eval_1, eval_2)) ),
dbh.session().query(dbh.Sample.id).filter(
dbh.Sample.iid.n_( sqla.intersect(eval_1, eval_2)) )
)
q = dbh.session().query(dbh.Sample.id).filter( dbh.Sample.id.in_( eval_1 ) )
return q
def test_sqlalchemy(self):
engine = create_engine('sqlite:///:memory:')
Base = declarative_base()
Session = sessionmaker(engine)
class Table(Base):
__tablename__ = 'table'
id = Column(Integer, primary_key=True)
Base.metadata.create_all(engine)
with Session() as s:
q1 = select(Table).filter(Table.id == 1)
q2 = select(Table).filter(Table.id == 2)
q3 = union(q1, q2).subquery()
with Session() as s:
q1 = select(Table).filter(Table.id == 1)
q2 = select(Table).filter(Table.id == 2)
cte = union(q1, q2).cte()
q3 = select(Table).filter(Table.id.in_(cte))
q4 = select(Table).filter(Table.id.in_(cte))
q5 = union(q3, q4).subquery()
log.debug(q5)
def test_intersect_unions_2(self):
u = intersect(
union(select([t1.c.col3, t1.c.col4]), select([t3.c.col3, t3.c.col4])).alias().select(),
union(select([t2.c.col3, t2.c.col4]), select([t3.c.col3, t3.c.col4])).alias().select(),
)
wanted = [("aaa", "ccc"), ("bbb", "aaa"), ("ccc", "bbb")]
found = self._fetchall_sorted(u.execute())
eq_(found, wanted)
def test_intersect_unions_2(self):
u = intersect(
union(
select([t1.c.col3, t1.c.col4]),
select([t3.c.col3, t3.c.col4]),
).alias().select(),
union(
select([t2.c.col3, t2.c.col4]),
select([t3.c.col3, t3.c.col4]),
).alias().select())
wanted = [('aaa', 'ccc'), ('bbb', 'aaa'), ('ccc', 'bbb')]
found = self._fetchall_sorted(u.execute())
eq_(found, wanted)
def test_intersect_unions_2(self):
u = intersect(
union(
select([t1.c.col3, t1.c.col4]),
select([t3.c.col3, t3.c.col4]),
).alias().select(),
union(
select([t2.c.col3, t2.c.col4]),
select([t3.c.col3, t3.c.col4]),
).alias().select()
)
wanted = [('aaa', 'ccc'), ('bbb', 'aaa'), ('ccc', 'bbb')]
found = self._fetchall_sorted(u.execute())
eq_(found, wanted)
def timeseries_all(cls, table_names, agg_unit, start, end, geom=None):
# For each table in table_names, generate a query to be unioned
selects = []
for name in table_names:
table = cls.get_by_dataset_name(name)
ts_select = table.timeseries(agg_unit, start, end, geom)
selects.append(ts_select)
# Union the time series selects to get a panel
panel_query = sa.union(*selects)\
.order_by('dataset_name')\
.order_by('time_bucket')
panel_vals = session.execute(panel_query)
panel = []
for dataset_name, ts in groupby(panel_vals,
lambda row: row.dataset_name):
# ts gets closed after it's been iterated over once,
# so we need to store the rows somewhere to iterate over them twice.
rows = [row for row in ts]
# If no records were found, don't include this dataset
if all([row.count == 0 for row in rows]):
continue
ts_dict = {'dataset_name': dataset_name, 'items': []}
for row in rows:
ts_dict['items'].append({
'datetime': row.time_bucket.date(), # UTC time
'count': row.count
})
panel.append(ts_dict)
return panel
def test_union(self):
t1 = table(
't1', column('col1'), column('col2'),
column('col3'), column('col4'))
t2 = table(
't2', column('col1'), column('col2'),
column('col3'), column('col4'))
s1, s2 = select(
[t1.c.col3.label('col3'), t1.c.col4.label('col4')],
t1.c.col2.in_(['t1col2r1', 't1col2r2'])), \
select([t2.c.col3.label('col3'), t2.c.col4.label('col4')],
t2.c.col2.in_(['t2col2r2', 't2col2r3']))
u = union(s1, s2, order_by=['col3', 'col4'])
self.assert_compile(u,
'SELECT t1.col3 AS col3, t1.col4 AS col4 '
'FROM t1 WHERE t1.col2 IN (:col2_1, '
':col2_2) UNION SELECT t2.col3 AS col3, '
't2.col4 AS col4 FROM t2 WHERE t2.col2 IN '
'(:col2_3, :col2_4) ORDER BY col3, col4')
self.assert_compile(u.alias('bar').select(),
'SELECT bar.col3, bar.col4 FROM (SELECT '
't1.col3 AS col3, t1.col4 AS col4 FROM t1 '
'WHERE t1.col2 IN (:col2_1, :col2_2) UNION '
'SELECT t2.col3 AS col3, t2.col4 AS col4 '
'FROM t2 WHERE t2.col2 IN (:col2_3, '
':col2_4)) AS bar')
def main():
db = define.connect()
all_media = sa.union(
sa.select([orm.UserMediaLink.mediaid]),
sa.select([orm.SubmissionMediaLink.mediaid]),
sa.select([orm.MediaMediaLink.describee_id]),
sa.select([orm.MediaMediaLink.described_with_id]),
).alias('all_media')
q = (
db.query(orm.MediaItem)
.with_polymorphic([orm.DiskMediaItem])
.outerjoin(all_media)
.filter(all_media.c.mediaid == None))
count = q.count()
for e, media_item in enumerate(q, start=1):
sys.stdout.write('\r%d/%d' % (e, count))
sys.stdout.flush()
db.delete(media_item)
try:
os.unlink(media_item.full_file_path)
except OSError as e:
if e.errno == errno.ENOENT:
continue
raise
db.flush()
print
def getTokenUserFunds(request, token):
"""Get the sum of a token for all users
Arguments:
request {[type]} -- [description]
token {[type]} -- [description]
Returns:
[type] -- [description]
"""
users_r = request.dbsession.query(
Funds.user_id.label('user_id'),
func.sum(Funds.value).label("total")).filter(
Funds.token == token).group_by(Funds.user_id)
users_s = request.dbsession.query(
Funds.sender_id.label('user_id'),
func.sum(-Funds.value).label("total")).filter(
Funds.sender_id.isnot(None)).filter(Funds.token == token).group_by(
Funds.sender_id)
users_u = union(users_r, users_s).alias('total')
return request.dbsession.query(
users_u.columns.user_id,
func.sum(users_u.columns.total).label('total')).group_by(
users_u.columns.user_id)
def query(cls):
def select_1():
stmt = sqlalchemy.text("select * from pytis_view_user_menu()")
u = stmt.columns(sqlalchemy.Column(
'menuid', sqlalchemy.Integer()), ).alias('u')
h = sql.t.EvPytisHelp.alias('h')
return sqlalchemy.select(
sql.reorder_columns(cls._exclude(h), [
'help_id', 'menuid', 'fullname', 'title', 'description',
'menu_help', 'spec_name', 'spec_description', 'spec_help',
'page_id', 'parent', 'ord', 'content', 'position',
'position_nsub', 'changed', 'removed'
]),
from_obj=[h.join(u, h.c.menuid == u.c.menuid)])
def select_2():
h = sql.t.EvPytisHelp.alias('h')
return sqlalchemy.select(
sql.reorder_columns(cls._exclude(h), [
'help_id', 'menuid', 'fullname', 'title', 'description',
'menu_help', 'spec_name', 'spec_description', 'spec_help',
'page_id', 'parent', 'ord', 'content', 'position',
'position_nsub', 'changed', 'removed'
]),
from_obj=[h],
whereclause=h.c.menuid.is_(None),
)
return sqlalchemy.union(select_1(), select_2())
def test_union_label(self):
s1 = select([func.foo("hoho").label('x')])
s2 = select([func.foo("Bar").label('y')])
stmt = union(s1, s2).order_by("x")
self.assert_compile(
stmt,
"SELECT foo(:foo_1) AS x UNION SELECT foo(:foo_2) AS y ORDER BY x")
def update(self, engine):
with engine.begin() as conn:
# delete removed relations
conn.execute(self.delete(self.rels.select_delete()))
# collect all changed relations in a temporary table
# 1. relations added or modified
sels = [sa.select([self.rels.cc.id])]
# 2. relations with modified geometries
w = self.ways
sels.append(
sa.select([saf.func.unnest(w.c.rels).label('id')],
distinct=True).where(
w.c.id.in_(w.select_add_modify())))
conn.execute(
'DROP TABLE IF EXISTS __tmp_osgende_routes_updaterels')
conn.execute(
CreateTableAs('__tmp_osgende_routes_updaterels',
sa.union(*sels),
temporary=False))
tmp_rels = sa.Table('__tmp_osgende_routes_updaterels',
sa.MetaData(),
autoload_with=conn)
# 3. parent relation of all of them
conn.execute(tmp_rels.insert().from_select(
tmp_rels.c,
sa.select([self.rtree.c.parent], distinct=True).where(
self.rtree.c.child.in_(sa.select([tmp_rels.c.id])))))
# and insert/update all
self._insert_objects(conn, self.rels.c.id.in_(tmp_rels.select()))
tmp_rels.drop(conn)
def get_published_briefs(self):
team_brief_query = (db.session.query(
TeamBrief.brief_id.label('brief_id'),
func.array_agg(func.substring(
User.email_address,
'@(.*)')).label('domain')).join(Team).join(User).filter(
Team.status == 'completed').group_by(TeamBrief.brief_id))
brief_user_query = (db.session.query(
BriefUser.brief_id.label('brief_id'),
func.array_agg(
func.substring(User.email_address,
'@(.*)')).label('domain')).join(User).group_by(
BriefUser.brief_id))
subquery = union(team_brief_query, brief_user_query).alias('result')
result = (db.session.query(
Brief.id, Brief.data['organisation'].astext.label('organisation'),
Brief.published_at, Brief.withdrawn_at,
Brief.data['title'].astext.label('title'),
Brief.data['sellerSelector'].astext.label('openTo'),
Brief.data['areaOfExpertise'].astext.label('brief_category'),
Lot.name.label('brief_type'),
subquery.columns.domain[1].label('publisher_domain')).join(
subquery,
Brief.id == subquery.columns.brief_id).join(Lot).filter(
Brief.published_at.isnot(None)).order_by(Brief.id).all())
return [r._asdict() for r in result]
def determine_fetches(db_session, cred):
for thread in db_session.query(Thread).filter_by(closed=False):
update_thread_status(thread, cred)
db_session.flush()
incomplete_page_ids = (
sa.select([ThreadPost.page_id])
.group_by(ThreadPost.page_id)
.having(sa.func.count(ThreadPost.id) < 40)
.as_scalar()
)
incomplete_pages = sa.select(
[ThreadPage.thread_id, ThreadPage.page_num], from_obj=sa.join(ThreadPage, Thread)
).where(sa.and_(ThreadPage.id.in_(incomplete_page_ids), Thread.closed == sa.false()))
fetch_status = (
sa.select(
[ThreadPage.thread_id.label("thread_id"), sa.func.max(ThreadPage.page_num).label("last_fetched_page")]
)
.group_by(ThreadPage.thread_id)
.alias("fetch_status")
)
unfetched_pages = sa.select(
[
Thread.id.label("thread_id"),
sa.func.generate_series(fetch_status.c.last_fetched_page + 1, Thread.page_count).label("page_num"),
],
from_obj=sa.join(Thread, fetch_status, Thread.id == fetch_status.c.thread_id),
)
fetched_first_pages = sa.select([ThreadPage.thread_id]).where(ThreadPage.page_num == 1).as_scalar()
unfetched_first_pages = sa.select(
[Thread.id.label("thread_id"), sa.literal(1, sa.Integer).label("page_num")], from_obj=Thread
).where(Thread.id.notin_(fetched_first_pages))
q = sa.union(incomplete_pages, unfetched_pages, unfetched_first_pages)
q = q.order_by(q.c.thread_id.asc(), q.c.page_num.asc())
return db_session.execute(q).fetchall()
def query(cls):
def select_1():
h = sql.t.EvPytisHelp.alias("h")
u = sqlalchemy.select(["*"], from_obj=["pytis_view_user_menu()"]).alias("u")
return sqlalchemy.select(
sql.reorder_columns(
cls._exclude(h),
[
"help_id",
"menuid",
"fullname",
"title",
"description",
"menu_help",
"spec_name",
"spec_description",
"spec_help",
"page_id",
"parent",
"ord",
"content",
"position",
"position_nsub",
"changed",
"removed",
],
),
from_obj=[h.join(u, sql.gR("h.menuid = u.menuid"))],
)
def select_2():
h = sql.t.EvPytisHelp.alias("h")
return sqlalchemy.select(
sql.reorder_columns(
cls._exclude(h),
[
"help_id",
"menuid",
"fullname",
"title",
"description",
"menu_help",
"spec_name",
"spec_description",
"spec_help",
"page_id",
"parent",
"ord",
"content",
"position",
"position_nsub",
"changed",
"removed",
],
),
from_obj=[h],
whereclause="h.menuid is null",
)
return sqlalchemy.union(select_1(), select_2())
def top_10_fields_by_prob():
a = LocalizationTile
b = FieldTile
a_lo = a.nested_lo.label('a_lo')
a_hi = a.nested_hi.label('a_hi')
b_lo = b.nested_lo.label('b_lo')
b_hi = b.nested_hi.label('b_hi')
query1 = db.session.query(
a_lo, a_hi, b_lo, b_hi, FieldTile.field_id.label('field_id'),
LocalizationTile.localization_id.label('localization_id'),
LocalizationTile.probdensity.label('probdensity'))
query2 = union(
query1.join(b, a_lo.between(b_lo, b_hi)),
query1.join(b, b_lo.between(a_lo, a_hi)),
).cte()
lo = func.greatest(query2.c.a_lo, query2.c.b_lo)
hi = func.least(query2.c.a_hi, query2.c.b_hi)
area = (hi - lo + 1) * healpix.PIXEL_AREA
prob = func.sum(query2.c.probdensity * area).label('probability')
query = db.session.query(query2.c.localization_id, query2.c.field_id,
prob).group_by(query2.c.localization_id,
query2.c.field_id).order_by(
prob.desc()).limit(10)
return query.all()
def get_unclassified(self, all_snapshots, on_time_grads, late_grads,
dropouts, unconfirmed_high_gpa, unconfirmed_low_gpa):
student_lookup = all_snapshots.c.student_lookup
grade = all_snapshots.c.grade
on_time_lookups = sql.select([on_time_grads.c.student_lookup])
late_lookups = sql.select([late_grads.c.student_lookup])
dropout_lookups = sql.select([dropouts.c.student_lookup])
unconfirmed_high_lookups = sql.select(
[unconfirmed_high_gpa.c.student_lookup])
unconfirmed_low_lookups = sql.select(
[unconfirmed_low_gpa.c.student_lookup])
u = sql.union(on_time_lookups, late_lookups, dropout_lookups,
unconfirmed_high_lookups, unconfirmed_low_lookups)
return\
sql.select([
sql.distinct(student_lookup).label('student_lookup'),
sql.literal(original_labels_config.unclassified).label('label')
]).\
where(
db_expr.and_(
student_lookup.notin_(u),
grade >= 12
)
)
def get_supplier_contacts_union(self):
authorised_representative = select([Supplier.code, Supplier.data['email'].astext.label('email_address')])
business_contact = select([Supplier.code, Supplier.data['contact_email'].astext.label('email_address')])
user_email_addresses = (select([User.supplier_code.label('code'), User.email_address])
.where(User.active))
return union(authorised_representative, business_contact, user_email_addresses).alias('email_addresses')
def test_select_from_plain_union(self):
table = self.tables.some_table
s1 = select([table]).where(table.c.id == 2)
s2 = select([table]).where(table.c.id == 3)
u1 = union(s1, s2).alias().select()
self._assert_result(u1.order_by(u1.c.id), [(2, 2, 3), (3, 3, 4)])
def timeseries_all(cls, table_names, agg_unit, start, end, geom=None):
# For each table in table_names, generate a query to be unioned
selects = []
for name in table_names:
table = cls.get_by_dataset_name(name)
ts_select = table.timeseries(agg_unit, start, end, geom)
selects.append(ts_select)
# Union the time series selects to get a panel
panel_query = sa.union(*selects)\
.order_by('dataset_name')\
.order_by('time_bucket')
panel_vals = session.execute(panel_query)
panel = []
for dataset_name, ts in groupby(panel_vals, lambda row: row.dataset_name):
# ts gets closed after it's been iterated over once,
# so we need to store the rows somewhere to iterate over them twice.
rows = [row for row in ts]
# If no records were found, don't include this dataset
if all([row.count == 0 for row in rows]):
continue
ts_dict = {'dataset_name': dataset_name,
'items': []}
for row in rows:
ts_dict['items'].append({
'datetime': row.time_bucket.date(), # UTC time
'count': row.count
})
panel.append(ts_dict)
return panel
def test_distinct_selectable_in_unions(faux_conn):
table = some_table(faux_conn)
s1 = select([table]).where(table.c.id == 2).distinct()
s2 = select([table]).where(table.c.id == 3).distinct()
u1 = union(s1, s2).limit(2)
assert_result(faux_conn, u1.order_by(u1.c.id), [(2, 2, 3), (3, 3, 4)])
def fetch_submissions(hdlr_name=None):
"""
:param hdlr_name: Name of the handler that requests subsmissions.
:return:
Return submissions with 'pid' greater than the milestones added by the
handler with 'handler_name' and sorted by 'pid', which is equivalent to
sorted by 'submit_time'.
If hdlr_name is not specified or there are not any milestones under
the name of a handler, all submissions are returned.
An empty list is returned if there are no available submissions.
:rtype: [Submission]
:caller: Handler
"""
mlst = select([t_milestone.c.submission_pid, t_milestone.c.handler_name]) \
.where(t_milestone.c.handler_name == hdlr_name) \
.order_by(t_milestone.c.submission_pid.desc()).limit(1)
mlst = union(select([mlst]), select([None, None]).where(~exists(mlst)))
s = select([t.c.oj,
t.c.problem_id,
t.c.problem_title,
t.c.problem_url,
t.c.submit_time,
t.c.timezone,
t.c.pid]) \
.where((mlst.c.submission_pid == None) |
(t.c.pid > mlst.c.submission_pid) & (mlst.c.handler_name == hdlr_name)) \
.order_by(t.c.pid)
with engine.connect() as conn:
return [Submission(*d) for d in conn.execute(s)]
def test_union(self):
t1 = table(
't1', column('col1'), column('col2'),
column('col3'), column('col4'))
t2 = table(
't2', column('col1'), column('col2'),
column('col3'), column('col4'))
s1, s2 = select(
[t1.c.col3.label('col3'), t1.c.col4.label('col4')],
t1.c.col2.in_(['t1col2r1', 't1col2r2'])), \
select([t2.c.col3.label('col3'), t2.c.col4.label('col4')],
t2.c.col2.in_(['t2col2r2', 't2col2r3']))
u = union(s1, s2, order_by=['col3', 'col4'])
self.assert_compile(u,
'SELECT t1.col3 AS col3, t1.col4 AS col4 '
'FROM t1 WHERE t1.col2 IN (:col2_1, '
':col2_2) UNION SELECT t2.col3 AS col3, '
't2.col4 AS col4 FROM t2 WHERE t2.col2 IN '
'(:col2_3, :col2_4) ORDER BY col3, col4')
self.assert_compile(u.alias('bar').select(),
'SELECT bar.col3, bar.col4 FROM (SELECT '
't1.col3 AS col3, t1.col4 AS col4 FROM t1 '
'WHERE t1.col2 IN (:col2_1, :col2_2) UNION '
'SELECT t2.col3 AS col3, t2.col4 AS col4 '
'FROM t2 WHERE t2.col2 IN (:col2_3, '
':col2_4)) AS bar')
def test_compare_col_identity(self):
stmt1 = (
select([table_a.c.a, table_b.c.b])
.where(table_a.c.a == table_b.c.b)
.alias()
)
stmt1_c = (
select([table_a.c.a, table_b.c.b])
.where(table_a.c.a == table_b.c.b)
.alias()
)
stmt2 = union(select([table_a]), select([table_b]))
equivalents = {table_a.c.a: [table_b.c.a]}
is_false(
stmt1.compare(stmt2, use_proxies=True, equivalents=equivalents)
)
is_true(
stmt1.compare(stmt1_c, use_proxies=True, equivalents=equivalents)
)
is_true(
(table_a.c.a == table_b.c.b).compare(
stmt1.c.a == stmt1.c.b,
use_proxies=True,
equivalents=equivalents,
)
)
def moveNode(self, id_, moveTo):
# update t_data
upd = update(
self.t_data).where(self.t_data.c.node == 5).values(parent=3)
self.connection.execute(upd)
# update t_path
subtree = select([self.t_path.c.node
]).where(self.t_path.c.ancestor == 5)
path = select([self.t_path.c.ancestor]).where(self.t_path.c.node == 5)
# deletion
cond = and_(
or_(self.t_path.c.node == 5, self.t_path.c.node.in_(subtree)),
self.t_path.c.ancestor.in_(path))
delet = self.t_path.delete().where(cond)
self.connection.execute(delet)
# insertion
subtree = select([self.t_path.c.node
]).where(self.t_path.c.ancestor == 5)
path = select([self.t_path.c.ancestor]).where(self.t_path.c.node == 5)
path_y = select([self.t_path.c.ancestor
]).where(self.t_path.c.node == 3)
subset = select([column('node'), column('ancestor')]).select_from(
union(
select([
literal_column('1').label('sortir'),
literal_column('5').label('node'),
literal_column('3').label('ancestor')
]), select([2, 5, path_y]), select([3, subtree, 3]),
select([4, subtree, path_y])).order_by('sortir'))
addToPath = self.t_path.insert().from_select(['node', 'ancestor'],
subset)
self.connection.execute(addToPath)
def _do_get_provider_count_and_objs(self, **kw):
'''Custom getter function respecting lesson
Returns the result count from the database and a query object
'''
# TODO: Code duplication with CRC?!
qry = Submission.query
# Process lesson filter
if self.lesson:
q1 = (qry.join(Submission.user).join(lesson_members).join(Lesson)
.filter(Lesson.id == self.lesson.id).order_by(None))
q2 = (qry.join(Submission.user).join(team_members).join(Team)
.filter(Team.lesson_id == self.lesson.id).order_by(None))
qry = qry.select_from(union(q1, q2)).order_by(Submission.id)
filters = kw.pop('filters', dict())
for filter in filters:
if isinstance(filters[filter], (list, tuple, set)):
qry = qry.filter(getattr(Submission, filter).in_(filters[filter]))
else:
qry = qry.filter(getattr(Submission, filter) == filters[filter])
# Process filters from url
kwfilters = kw
exc = False
try:
kwfilters = self.__provider__._modify_params_for_dates(self.__model__, kwfilters)
except ValueError as e:
log.info('Could not parse date filters', exc_info=True)
flash('Could not parse date filters: "%s".' % e.message, 'error')
exc = True
try:
kwfilters = self.__provider__._modify_params_for_relationships(self.__model__, kwfilters)
except (ValueError, AttributeError) as e:
log.info('Could not parse relationship filters', exc_info=True)
flash('Could not parse relationship filters: "%s". '
'You can only filter by the IDs of relationships, not by their names.' % e.message, 'error')
exc = True
if exc:
# Since non-parsed kwfilters are bad, we just have to ignore them now
kwfilters = {}
for field_name, value in kwfilters.iteritems():
field = getattr(self.__model__, field_name)
try:
if self.__provider__.is_relation(self.__model__, field_name) and isinstance(value, list): # pragma: no cover
value = value[0]
qry = qry.filter(field.contains(value))
else:
qry = qry.filter(field == value)
except:
log.warn('Could not create filter on query', exc_info=True)
# Get total count
count = qry.count()
return count, qry
def test_distinct_selectable_in_unions(self):
table = self.tables.some_table
s1 = select([table]).where(table.c.id == 2).distinct()
s2 = select([table]).where(table.c.id == 3).distinct()
u1 = union(s1, s2).limit(2)
self._assert_result(u1.order_by(u1.c.id), [(2, 2, 3), (3, 3, 4)])
def test_compare_col_identity(self):
stmt1 = (
select([table_a.c.a, table_b.c.b])
.where(table_a.c.a == table_b.c.b)
.alias()
)
stmt1_c = (
select([table_a.c.a, table_b.c.b])
.where(table_a.c.a == table_b.c.b)
.alias()
)
stmt2 = union(select([table_a]), select([table_b]))
stmt3 = select([table_b])
equivalents = {table_a.c.a: [table_b.c.a]}
is_false(
stmt1.compare(stmt2, use_proxies=True, equivalents=equivalents)
)
is_true(
stmt1.compare(stmt1_c, use_proxies=True, equivalents=equivalents)
)
is_true(
(table_a.c.a == table_b.c.b).compare(
stmt1.c.a == stmt1.c.b,
use_proxies=True,
equivalents=equivalents,
)
)
def _lookup(self, assignment_id, *args):
try:
assignment_id = int(assignment_id)
# TODO: Use SQLAlchemy magic on model to make queries on assignment easier
q1 = (Assignment.query.filter(Assignment.id == assignment_id).join(
Assignment._lti).order_by(None))
q2 = (Assignment.query.filter(
Assignment.id == assignment_id).join(Sheet).join(Event).join(
Event.lti).order_by(None))
assignment = Assignment.query.select_from(union(q1, q2)).one()
except ValueError:
flash('Invalid LTI Assignment id: %s' % assignment_id, 'error')
abort(400)
except NoResultFound:
flash('LTI Assignment %d not found' % assignment_id, 'error')
abort(404)
except MultipleResultsFound: # pragma: no cover
log.error('Database inconsistency: LTI Assignment %d',
assignment_id,
exc_info=True)
flash(
'An error occurred while accessing LTI Assignment %d' %
assignment_id, 'error')
abort(500)
controller = LTIAssignmentController(assignment)
return controller, args
def _lookup(self, assignment_id, *args):
try:
assignment_id = int(assignment_id)
# TODO: Use SQLAlchemy magic on model to make queries on assignment easier
q1 = Assignment.query.filter(Assignment.id == assignment_id).join(Assignment._lti).order_by(None)
q2 = (
Assignment.query.filter(Assignment.id == assignment_id)
.join(Sheet)
.join(Event)
.join(Event.lti)
.order_by(None)
)
assignment = Assignment.query.select_from(union(q1, q2)).one()
except ValueError:
flash("Invalid LTI Assignment id: %s" % assignment_id, "error")
abort(400)
except NoResultFound:
flash("LTI Assignment %d not found" % assignment_id, "error")
abort(404)
except MultipleResultsFound: # pragma: no cover
log.error("Database inconsistency: LTI Assignment %d", assignment_id, exc_info=True)
flash("An error occurred while accessing LTI Assignment %d" % assignment_id, "error")
abort(500)
controller = LTIAssignmentController(assignment)
return controller, args
def list_worksheets(self, owner_id=None):
'''
Return a list of row dicts, one per worksheet. These dicts do NOT contain
ALL worksheet items; this method is meant to make it easy for a user to see
the currently existing worksheets. Included worksheet items are those that
define metadata that one will likely want to see in a list view (e.g. title).
'''
cols_to_select = [cl_worksheet.c.id,
cl_worksheet.c.uuid,
cl_worksheet.c.name,
cl_worksheet.c.owner_id,
cl_group_object_permission.c.permission]
if owner_id is None:
# query for public worksheets
stmt = select(cols_to_select).\
where(cl_worksheet.c.uuid == cl_group_object_permission.c.object_uuid).\
where(cl_group_object_permission.c.group_uuid == self.public_group_uuid)
else:
# query for worksheets owned by owner_id
cols1 = cols_to_select[:4]
cols1.extend([literal(GROUP_OBJECT_PERMISSION_ALL).label('permission')])
stmt1 = select(cols1).where(cl_worksheet.c.owner_id == owner_id)
# query for worksheets visible to owner_id or co-owned by owner_id
stmt2_groups = select([cl_user_group.c.group_uuid]).\
where(cl_user_group.c.user_id == owner_id)
stmt2 = select(cols_to_select).\
where(cl_worksheet.c.uuid == cl_group_object_permission.c.object_uuid).\
where(or_(
cl_group_object_permission.c.group_uuid.in_(stmt2_groups),
cl_group_object_permission.c.group_uuid == self.public_group_uuid)).\
where(cl_worksheet.c.owner_id != owner_id)
stmt = union(stmt1, stmt2)
with self.engine.begin() as connection:
rows = connection.execute(stmt).fetchall()
if not rows:
return []
uuids = set(row.uuid for row in rows)
item_rows = connection.execute(
cl_worksheet_item.select().\
where(cl_worksheet_item.c.worksheet_uuid.in_(uuids)).\
where(or_(
cl_worksheet_item.c.type == 'title',
cl_worksheet_item.c.type == 'description'))
).fetchall()
row_dicts = [dict(row) for row in sorted(rows, key=lambda item: item['id'])]
uuid_index_map = {}
for i in range(0, len(row_dicts)):
row_dict = row_dicts[i]
row_dict.update({'items': []})
uuid_index_map[row_dict['uuid']] = i
for item_row in item_rows:
idx = uuid_index_map.get(item_row.worksheet_uuid, -1)
if idx < 0:
raise IntegrityError('Got item %s without worksheet' % (item_row,))
row_dicts[idx]['items'].append(dict(item_row))
return row_dicts
def test_union_limit_offset(self):
emp, dep, conn = self._emp_d_fixture()
s1 = select([emp.c.name])
s2 = select([dep.c.name])
u1 = union(s1, s2).order_by(emp.c.name).limit(3).offset(2)
r = self._exec_stmt(conn, u1)
eq_(r.fetchall(), [('Sales', ), ('ed', ), ('jack', )])
def query(class_):
return sqlalchemy.union(
sqlalchemy.select([sql.c.Foo.id, sql.c.Bar.description],
from_obj=[sql.t.Foo.join(sql.t.Bar)]),
sqlalchemy.select([
sql.c.Foo2.id,
sqlalchemy.literal_column("'xxx'", sqlalchemy.String)
]))
def test_union_label(self):
s1 = select([func.foo("hoho").label("x")])
s2 = select([func.foo("Bar").label("y")])
stmt = union(s1, s2).order_by("x")
self.assert_compile(
stmt,
"SELECT foo(:foo_1) AS x UNION SELECT foo(:foo_2) AS y ORDER BY x",
)
def members_query(self, qry=None):
if not qry:
qry = User.query
qry = qry.select_from(union(
qry.join(lesson_members).filter_by(lesson_id=self.id).order_by(None),
qry.join(team_members).join(Team).filter_by(lesson_id=self.id).order_by(None),
)).order_by(User.id)
return qry
def test_union_column(self):
s1 = select([table1])
s2 = select([table1])
stmt = union(s1, s2).order_by("name")
self.assert_compile(
stmt,
"SELECT mytable.myid, mytable.name, mytable.description FROM "
"mytable UNION SELECT mytable.myid, mytable.name, "
"mytable.description FROM mytable ORDER BY name")
def _list_by_category(self, balance_uid, expenses = True, incomes = True):
model = request.environ['sqlalchemy.model']
db = request.environ['sqlalchemy.session']
try:
user_uid = h.authenticated_user().uid
except:
return { "failure": Messages.pemissionDenied() }
if not Operations(db, model).can_see_balance(user_uid, balance_uid):
return { "failure": Messages.permissionDenied() }
now = date.today()
select_expenses = select(
[model.ExpenseCategory.c.uid.label('uid'), model.ExpenseCategory.c.name.label('name'), func.sum(model.BalanceChange.c.amount).label('summary')],
and_(model.BalanceChange.is_income==False,
model.ExpenseCategory.uid==model.BalanceChange.expense_category_uid,
model.BalanceChange.balance_uid==balance_uid,
model.BalanceChange.occurred_on >= date(now.year, now.month, 1)),
from_obj=[model.expense_categories_table, model.balance_changes_table],
group_by=[model.ExpenseCategory.c.uid, model.ExpenseCategory.c.name])
select_incomes = select(
[model.IncomeCategory.c.uid.label('uid'), model.IncomeCategory.c.name.label('name'), func.sum(model.BalanceChange.c.amount).label('summary')],
and_(model.BalanceChange.is_income==True,
model.IncomeCategory.uid==model.BalanceChange.income_category_uid,
model.BalanceChange.balance_uid==balance_uid,
model.BalanceChange.occurred_on >= date(now.year, now.month, 1)),
from_obj=[model.income_categories_table, model.balance_changes_table],
group_by=[model.IncomeCategory.c.uid, model.IncomeCategory.c.name])
if expenses and incomes:
query = union(select_expenses, select_incomes)
else:
query = expenses and select_expenses or select_incomes
balance_changes = db.execute(query.order_by('name')).fetchall()
total = len(balance_changes)
try:
page_nr = request.params['page_nr']
except:
page_nr = 1
try:
items_per_page = int(request.params['items_per_page'])
except:
items_per_page = 15
subset = Page(balance_changes, item_count=total, current_page=page_nr, items_per_page=items_per_page)
return {
"totalItems" : total,
"itemsFound" : len(subset),
"items" : [{
"uid" : item.uid,
"name" : item.name,
"summary" : h.format_decimal(Decimal(item.summary))} for item in subset ]
}
def test_compound(self):
t1 = table('t1', column('c1'), column('c2'), column('c3'))
t2 = table('t2', column('c1'), column('c2'), column('c3'))
self.assert_compile(union(t1.select(), t2.select()),
'SELECT t1.c1, t1.c2, t1.c3 FROM t1 UNION '
'SELECT t2.c1, t2.c2, t2.c3 FROM t2')
self.assert_compile(except_(t1.select(), t2.select()),
'SELECT t1.c1, t1.c2, t1.c3 FROM t1 MINUS '
'SELECT t2.c1, t2.c2, t2.c3 FROM t2')
def test_union_heterogeneous_columns(self):
emp, dep, conn = self._emp_d_fixture()
s1 = select([emp.c.name])
s2 = select([dep.c.name])
u1 = union(s1, s2)
r = self._exec_stmt(conn, u1)
eq_(r.fetchall(), [('ed', ), ('wendy', ), ('jack', ),
('Engineering', ), ('Accounting', ), ('Sales', )])
def test_union_all(self):
e = union_all(select([t1.c.col3]), union(select([t1.c.col3]), select([t1.c.col3])))
wanted = [("aaa",), ("aaa",), ("bbb",), ("bbb",), ("ccc",), ("ccc",)]
found1 = self._fetchall_sorted(e.execute())
eq_(found1, wanted)
found2 = self._fetchall_sorted(e.alias("foo").select().execute())
eq_(found2, wanted)
def test_union_ordered_alias(self):
(s1, s2) = (
select([t1.c.col3.label("col3"), t1.c.col4.label("col4")], t1.c.col2.in_(["t1col2r1", "t1col2r2"])),
select([t2.c.col3.label("col3"), t2.c.col4.label("col4")], t2.c.col2.in_(["t2col2r2", "t2col2r3"])),
)
u = union(s1, s2, order_by=["col3", "col4"])
wanted = [("aaa", "aaa"), ("bbb", "bbb"), ("bbb", "ccc"), ("ccc", "aaa")]
eq_(u.alias("bar").select().execute().fetchall(), wanted)
def test_union_homogeneous(self):
emp, dep, conn = self._emp_d_fixture()
s1 = select([emp.c.name]).where(emp.c.name == "wendy")
s2 = select([emp.c.name
]).where(or_(emp.c.name == 'wendy', emp.c.name == 'jack'))
u1 = union(s1, s2)
r = self._exec_stmt(conn, u1)
eq_(r.fetchall(), [('wendy', ), ('jack', )])
def test_limit_render_multiple_times(self, connection):
table = self.tables.some_table
stmt = select(table.c.id).order_by(table.c.id).limit(1).scalar_subquery()
u = sqlalchemy.union(select(stmt), select(stmt)).subquery().select()
self._assert_result(
connection, u, [(1,)],
)
def test_compound(self):
t1 = table('t1', column('c1'), column('c2'), column('c3'))
t2 = table('t2', column('c1'), column('c2'), column('c3'))
self.assert_compile(union(t1.select(), t2.select()),
'SELECT t1.c1, t1.c2, t1.c3 FROM t1 UNION '
'SELECT t2.c1, t2.c2, t2.c3 FROM t2')
self.assert_compile(except_(t1.select(), t2.select()),
'SELECT t1.c1, t1.c2, t1.c3 FROM t1 MINUS '
'SELECT t2.c1, t2.c2, t2.c3 FROM t2')
def __select_all__(cls):
two_values = sqlalchemy.orm.Query(
sqlalchemy.union(
sqlalchemy.select([1]),
sqlalchemy.select([2]),
)).subquery()
return super(Label, cls).__select_all__() \
.join(two_values, sqlalchemy.literal(True))
def test_limit_offset_aliased_selectable_in_unions(self):
table = self.tables.some_table
s1 = select([table]).where(table.c.id == 2).\
limit(1).order_by(table.c.id).alias().select()
s2 = select([table]).where(table.c.id == 3).\
limit(1).order_by(table.c.id).alias().select()
u1 = union(s1, s2).limit(2)
self._assert_result(u1.order_by(u1.c.id), [(2, 2, 3), (3, 3, 4)])
def test_union_heterogeneous_types(self):
emp, dep, conn = self._emp_d_fixture()
s1 = select([emp.c.name, emp.c.fullname]).where(emp.c.name == 'jack')
s2 = select([dep.c.dep_id, dep.c.name])
u1 = union(s1, s2)
r = self._exec_stmt(conn, u1)
eq_(r.fetchall(), [('jack', 'Jack Smith'), (1, 'Engineering'),
(2, 'Accounting'), (3, 'Sales')])
def test_limit_offset_aliased_selectable_in_unions(faux_conn):
table = some_table(faux_conn)
s1 = (select([table]).where(table.c.id == 2).limit(1).order_by(
table.c.id).alias().select())
s2 = (select([table]).where(table.c.id == 3).limit(1).order_by(
table.c.id).alias().select())
u1 = union(s1, s2).limit(2)
assert_result(faux_conn, u1.order_by(u1.c.id), [(2, 2, 3), (3, 3, 4)])
def test_date(session):
dates = (
date(2016, 1, 1),
date(2016, 1, 2),
)
selects = tuple(sa.select((MakeADate(d),)) for d in dates)
data = sa.alias(sa.union(*selects, use_labels=True), 'dates')
stmt = sa.select((data,))
result = session.execute(stmt).fetchall()
assert tuple(chain.from_iterable(result)) == dates
def test_union_column(self):
s1 = select([table1])
s2 = select([table1])
stmt = union(s1, s2).order_by("name")
self.assert_compile(
stmt,
"SELECT mytable.myid, mytable.name, mytable.description FROM "
"mytable UNION SELECT mytable.myid, mytable.name, "
"mytable.description FROM mytable ORDER BY name",
)
def test_except_style1(self):
e = except_(
union(select([t1.c.col3, t1.c.col4]), select([t2.c.col3, t2.c.col4]), select([t3.c.col3, t3.c.col4])),
select([t2.c.col3, t2.c.col4]),
)
wanted = [("aaa", "aaa"), ("aaa", "ccc"), ("bbb", "aaa"), ("bbb", "bbb"), ("ccc", "bbb"), ("ccc", "ccc")]
found = self._fetchall_sorted(e.alias().select().execute())
eq_(found, wanted)
def test_select_from_plain_union(self):
table = self.tables.some_table
s1 = select([table]).where(table.c.id == 2)
s2 = select([table]).where(table.c.id == 3)
u1 = union(s1, s2).alias().select()
self._assert_result(
u1.order_by(u1.c.id),
[(2, 2, 3), (3, 3, 4)]
)
def list_worksheets(self, user_id=None):
'''
Return a list of row dicts, one per worksheet. These dicts do NOT contain
ALL worksheet items; this method is meant to make it easy for a user to see
their existing worksheets.
'''
cols_to_select = [cl_worksheet.c.id,
cl_worksheet.c.uuid,
cl_worksheet.c.name,
cl_worksheet.c.owner_id,
cl_group_object_permission.c.permission]
cols1 = cols_to_select[:4]
cols1.extend([literal(GROUP_OBJECT_PERMISSION_ALL).label('permission')])
if user_id == self.root_user_id:
# query all worksheets
stmt = select(cols1)
elif user_id is None:
# query for public worksheets (only used by the webserver when user is not logged in)
stmt = select(cols_to_select).\
where(cl_worksheet.c.uuid == cl_group_object_permission.c.object_uuid).\
where(cl_group_object_permission.c.group_uuid == self.public_group_uuid)
else:
# 1) Worksheets owned by owner_id
stmt1 = select(cols1).where(cl_worksheet.c.owner_id == user_id)
# 2) Worksheets visible to owner_id or co-owned by owner_id
stmt2_groups = select([cl_user_group.c.group_uuid]).\
where(cl_user_group.c.user_id == user_id)
# List worksheets where one of our groups has permission.
stmt2 = select(cols_to_select).\
where(cl_worksheet.c.uuid == cl_group_object_permission.c.object_uuid).\
where(or_(
cl_group_object_permission.c.group_uuid.in_(stmt2_groups),
cl_group_object_permission.c.group_uuid == self.public_group_uuid)).\
where(cl_worksheet.c.owner_id != user_id) # Avoid duplicates
stmt = union(stmt1, stmt2)
with self.engine.begin() as connection:
rows = connection.execute(stmt).fetchall()
if not rows:
return []
# Get permissions of the worksheets
worksheet_uuids = [row.uuid for row in rows]
uuid_group_permissions = dict(zip(worksheet_uuids, self.batch_get_group_permissions(worksheet_uuids)))
# Put the permissions into the worksheets
row_dicts = []
for row in sorted(rows, key=lambda item: item['id']):
row = dict(row)
row['group_permissions'] = uuid_group_permissions[row['uuid']]
row_dicts.append(row)
return row_dicts
def test_composite_alias(self):
ua = intersect(
select([t2.c.col3, t2.c.col4]),
union(select([t1.c.col3, t1.c.col4]), select([t2.c.col3, t2.c.col4]), select([t3.c.col3, t3.c.col4]))
.alias()
.select(),
).alias()
wanted = [("aaa", "bbb"), ("bbb", "ccc"), ("ccc", "aaa")]
found = self._fetchall_sorted(ua.select().execute())
eq_(found, wanted)
def test_except_style1(self):
e = except_(union(
select([t1.c.col3, t1.c.col4]),
select([t2.c.col3, t2.c.col4]),
select([t3.c.col3, t3.c.col4]),
), select([t2.c.col3, t2.c.col4]))
wanted = [('aaa', 'aaa'), ('aaa', 'ccc'), ('bbb', 'aaa'),
('bbb', 'bbb'), ('ccc', 'bbb'), ('ccc', 'ccc')]
found = self._fetchall_sorted(e.alias().select().execute())
eq_(found, wanted)
def test_limit_offset_aliased_selectable_in_unions(self):
table = self.tables.some_table
s1 = select([table]).where(table.c.id == 2).\
limit(1).order_by(table.c.id).alias().select()
s2 = select([table]).where(table.c.id == 3).\
limit(1).order_by(table.c.id).alias().select()
u1 = union(s1, s2).limit(2)
self._assert_result(
u1.order_by(u1.c.id),
[(2, 2, 3), (3, 3, 4)]
)
def test_distinct_selectable_in_unions(self):
table = self.tables.some_table
s1 = select([table]).where(table.c.id == 2).\
distinct()
s2 = select([table]).where(table.c.id == 3).\
distinct()
u1 = union(s1, s2).limit(2)
self._assert_result(
u1.order_by(u1.c.id),
[(2, 2, 3), (3, 3, 4)]
)
def test_b_ab1_union_b_ab2(self):
j1 = a.join(b1)
j2 = a.join(b2)
b_j1 = b.join(j1)
b_j2 = b.join(j2)
s = union(
select([b_j1], use_labels=True), select([b_j2], use_labels=True)
).select(use_labels=True)
self._test(s, self._b_ab1_union_c_ab2)
