Python sql.text函数代码示例

def upgrade():
    op.drop_constraint("queues_pkey", "queues")
    op.execute(CreateSequence(Sequence("queues_id_seq")))
    op.add_column("queues", Column("id", Integer, server_default=text("nextval('queues_id_seq'::regclass)")))
    op.create_primary_key("queues_pkey", "queues", ["id"])

    Email.__table__.create(bind=engine)
    op.create_table(
        "queue_notifications",
        Column("queue_id", Integer, ForeignKey("queues.id")),
        Column("email_id", Integer, ForeignKey("emails.id")),
    )
    op.add_column("users", Column("email_id", Integer, ForeignKey("emails.id")))

    conn = op.get_bind()
    s = select([text("users.email")]).select_from(text("users"))
    users = conn.execute(s)
    table_user = User.__table__
    for row in users:
        ins = Email.__table__.insert().values(address=row["email"])
        result_insert_email = conn.execute(ins)
        upd = (
            table_user.update()
            .values(email_id=result_insert_email.inserted_primary_key[0])
            .where(text("users.email = :email"))
        )
        conn.execute(upd, email=row["email"])

    op.drop_column("users", "email")

def update_view_count_to_db(url):
    try:
        return
        original_url = url
        count = redis_views.get(url)
        
        url = url.replace('http://d35wlof4jnjr70.cloudfront.net/', 'https://s3.amazonaws.com/franklymestorage/')
        types = ['_ultralow', '_low', '_medium', '_opt', '_promo']
        for suffix in types:
            url = url.replace(suffix, '')
        
        if count:
            db.session.execute(text("""UPDATE users 
                                        SET view_count=view_count+:count, total_view_count=total_view_count+:count
                                        WHERE profile_video=:url
                                    """),
                                params = {"url":url, "count":int(count)}
                            )
            db.session.execute(text("""UPDATE posts 
                                        SET view_count=view_count+:count 
                                        WHERE media_url=:url
                                    """),
                                params = {"url":url, "count":int(count)}
                            )
            db.session.commit()

        redis_views.delete(original_url)
    except:
        db.session.rollback()

def get_candidate_tasks(app_id, user_id=None, user_ip=None, n_answers=30, offset=0):
    """Gets all available tasks for a given project and user"""
    rows = None
    if user_id and not user_ip:
        query = text('''
                     SELECT id FROM task WHERE NOT EXISTS
                     (SELECT task_id FROM task_run WHERE
                     app_id=:app_id AND user_id=:user_id AND task_id=task.id)
                     AND app_id=:app_id AND state !='completed'
                     ORDER BY priority_0 DESC, id ASC LIMIT 10''')
        rows = session.execute(query, dict(app_id=app_id, user_id=user_id))
    else:
        if not user_ip:
            user_ip = '127.0.0.1'
        query = text('''
                     SELECT id FROM task WHERE NOT EXISTS
                     (SELECT task_id FROM task_run WHERE
                     app_id=:app_id AND user_ip=:user_ip AND task_id=task.id)
                     AND app_id=:app_id AND state !='completed'
                     ORDER BY priority_0 DESC, id ASC LIMIT 10''')
        rows = session.execute(query, dict(app_id=app_id, user_ip=user_ip))

    tasks = []
    for t in rows:
        tasks.append(session.query(Task).get(t.id))
    return tasks

def downgrade():
    conn = op.get_bind()
    conn.execute(
        text(
            "ALTER TABLE contact"
            " ADD CONSTRAINT contact_ibfk_1 FOREIGN KEY"
            " (namespace_id) REFERENCES namespace(id)"
        )
    )

    conn.execute(
        text(
            "ALTER TABLE phonenumber"
            " ADD CONSTRAINT phonenumber_ibfk_1 FOREIGN KEY"
            " (contact_id) REFERENCES contact(id)"
        )
    )

    conn.execute(
        text(
            "ALTER TABLE messagecontactassociation"
            " ADD CONSTRAINT messagecontactassociation_ibfk_1"
            " FOREIGN KEY (contact_id) REFERENCES contact(id)"
        )
    )

def upgrade():
    # ### commands auto generated by Alembic - please adjust! ###
    op.add_column('product', sa.Column('create_date', sa.DateTime(), nullable=True))

    results = op.get_bind().execute(text("""
    select prd.id, min(po.order_date) from purchase_order po, product prd, purchase_order_line pol
    where pol.product_id = prd.id and po.id = pol.purchase_order_id
    group by prd.id
    """)).fetchall()
    for r in results:
        sup_id = r[0]
        po_date = r[1]
        sql = "update product set create_date = '{0}' where id={1}".format(po_date, sup_id)
        op.get_bind().execute(text(sql))

    results = op.get_bind().execute(text("""
    select p.id, min(so.order_date) from sales_order so, sales_order_line sol,
    product p where so.id = sol.sales_order_id and
    sol.product_id = p.id group by p.id;
    """)).fetchall()
    for r in results:
        sup_id = r[0]
        so_date = r[1]
        sql = "update product set create_date = '{0}' where id={1} and create_date is null".format(so_date, sup_id)
        op.get_bind().execute(text(sql))

    op.get_bind().execute(text("update product set create_date = '{0}' where create_date is null".format(datetime.now())))
    op.alter_column('product', 'create_date', existing_type=sa.DateTime(), nullable=False)

 def get_table_names(self, connection, schema=None, **kw):
     if schema is None:
         schema = self.default_schema_name
     if schema is None:
         result = connection.execute(
             text("SELECT TABLE_NAME FROM DB..TABLES"))
         return [r[0] for r in result]
     if '.' not in schema:
         schema += '.'
     catalog, schema = schema.split('.', 1)
     if catalog:
         if schema:
             result = connection.execute(
                 text("SELECT TABLE_NAME FROM DB..TABLES WHERE"
                      "TABLE_CATALOG=:catalog AND TABLE_SCHEMA = :schema"),
                 catalog=catalog, schema=schema)
         else:
             result = connection.execute(
                 text("SELECT TABLE_NAME FROM DB..TABLES WHERE"
                      "TABLE_CATALOG=:catalog"), catalog=catalog)
     else:
         result = connection.execute(
             text("SELECT TABLE_NAME FROM DB..TABLES WHERE"
                  "TABLE_SCHEMA=:schema"), schema=schema)
     return [r[0] for r in result]

    def test_filtered_counting( self ):
        user2 = self.user_manager.create( **user2_data )
        history = self.history_manager.create( name='history', user=user2 )
        contents = []
        contents.extend([ self.add_hda_to_history( history, name=( 'hda-' + str( x ) ) ) for x in xrange( 3 ) ])
        contents.append( self.add_list_collection_to_history( history, contents[:3] ) )
        contents.extend([ self.add_hda_to_history( history, name=( 'hda-' + str( x ) ) ) for x in xrange( 4, 6 ) ])
        contents.append( self.add_list_collection_to_history( history, contents[4:6] ) )

        self.log( "should show correct count with filters" )
        self.hda_manager.delete( contents[1] )
        self.hda_manager.delete( contents[4] )
        contents[6].deleted = True
        self.app.model.context.flush()

        contents[2].visible = False
        contents[5].visible = False
        contents[6].visible = False
        self.app.model.context.flush()

        HDA = self.hda_manager.model_class
        self.assertEqual( self.contents_manager.contents_count( history, filters=[ HDA.deleted == true() ] ), 3 )
        filters = [ text( 'visible = 0' ) ]
        self.assertEqual( self.contents_manager.contents_count( history, filters=filters ), 3 )

        filters = [ text( 'deleted = 1' ), text( 'visible = 0' ) ]
        self.assertEqual( self.contents_manager.contents_count( history, filters=filters ), 1 )

    def test_mysql_innodb(self):
        """Test that table creation on mysql only builds InnoDB tables."""
        with mock.patch('manila.db.sqlalchemy.api.get_engine',
                        return_value=self.engine):
            self._walk_versions(snake_walk=False, downgrade=False)

        # sanity check
        sanity_check = """SELECT count(*)
                          FROM information_schema.tables
                          WHERE table_schema = :database;"""
        total = self.engine.execute(
            text(sanity_check),
            database=self.engine.url.database)

        self.assertTrue(total.scalar() > 0, "No tables found. Wrong schema?")

        noninnodb_query = """
            SELECT count(*)
            FROM information_schema.TABLES
            WHERE table_schema = :database
                AND engine != 'InnoDB'
                AND table_name != 'alembic_version';"""

        count = self.engine.execute(
            text(noninnodb_query),
            database=self.engine.url.database
        ).scalar()
        self.assertEqual(count, 0, "%d non InnoDB tables created" % count)

 def has_table(self, connection, table_name, schema=None):
     # seems like case gets folded in pg_class...
     if schema is None:
         cursor = connection.execute(
             sql.text(
             "select relname from pg_class c join pg_namespace n on "
             "n.oid=c.relnamespace where n.nspname=current_schema() and "
             "lower(relname)=:name",
             bindparams=[
                     sql.bindparam('name', unicode(table_name.lower()),
                     type_=sqltypes.Unicode)]
             )
         )
     else:
         cursor = connection.execute(
             sql.text(
             "select relname from pg_class c join pg_namespace n on "
             "n.oid=c.relnamespace where n.nspname=:schema and "
             "lower(relname)=:name",
                 bindparams=[
                     sql.bindparam('name', 
                     unicode(table_name.lower()), type_=sqltypes.Unicode),
                     sql.bindparam('schema', 
                     unicode(schema), type_=sqltypes.Unicode)] 
             )
         )
     return bool(cursor.first())

def createServiceRequest():
	if request.method == 'POST':
		sql = text('''INSERT INTO service_request(client_username, address, title, description, tag)
						VALUES(:user, :address, :title, :description, :tag);''')
		db.engine.execute(sql, user=session["user"], address=request.form.get('address'), title=request.form.get('title'),\
							description=request.form.get('description'), tag=request.form.get('tag'))
		sql2 = text('''SELECT service_id FROM service_request WHERE client_username=:user AND address=:address AND
						title=:title AND description=:description;''')
		result = db.engine.execute(sql2, user=session["user"], address=request.form.get('address'), title=request.form.get('title'),\
							description=request.form.get('description'))
		idnum = result.fetchone()
		days = ['mo', 'tu', 'we', 'th', 'fr', 'sa', 'su']
		for day in days:
			times = request.form.getlist(day)
			for time in times:
				sql = text('''INSERT INTO service_schedule(service_id,day,hour) VALUES(:id,:day,:hour);''')
				db.engine.execute(sql, id=idnum[0], day=day, hour=time)
		flash('Service request created.')
		return redirect('/requests/'+str(idnum[0])+'/workers')
	if not session.get('user'):
		flash('Please login before creating requests.')
		return redirect('/')
	elif session['type'] == 'worker':
		flash('You must be a client to create service requests.')
		return redirect('/')
	else:
		sql = text('''SELECT tag FROM job_tag''')
		results = db.engine.execute(sql)
		tags = [res[0] for res in results]
		return render_template('createRequest.jade', tags=tags)

def getAltitudesChilds(connection, cd_ref):
    # construction du select  de la requete a partir des cles de la table
    sql = """
        SELECT label_altitude
        FROM atlas.bib_altitudes
        ORDER BY altitude_min
    """
    qalt = connection.execute(text(sql))
    alt = [k[0] for k in qalt]

    sumSelect = ', '.join(
        "SUM({}) AS {}".format(k, k) for k in alt
    )

    sql = """
        SELECT {sumSelect}
        FROM atlas.vm_altitudes alt
        WHERE
            alt.cd_ref IN (
                SELECT * FROM atlas.find_all_taxons_childs(:thiscdref)
            ) OR alt.cd_ref = :thiscdref
    """.format(sumSelect=sumSelect)
    mesAltitudes = connection.execute(text(sql), thiscdref=cd_ref)

    altiList = list()
    for a in mesAltitudes:
        for k in alt:
            temp = {"altitude": k.replace('_', '-')[1:], "value": getattr(a, k)}
            altiList.append(temp)

    return altiList

    def get_unique_constraints(self, connection, table_name, schema=None, **kw):
        # Same as get_indexes except only for "unique"=2
        table_id = self.get_table_id(connection, table_name, schema,
                                     info_cache=kw.get("info_cache"))

        # unique=2 -> unique constraint
        INDEX_SQL = text("""
          SELECT i.index_id as index_id, i.index_name AS name
          FROM sys.sysidx i join sys.systab t on i.table_id=t.table_id
          WHERE t.table_id = :table_id and i.index_category = 3 and i."unique"=2
        """)

        results = connection.execute(INDEX_SQL, table_id=table_id)
        indexes = []
        for r in results:
            INDEXCOL_SQL = text("""
             select tc.column_name as col
             FROM sys.sysidxcol ic
             join sys.systabcol tc on (ic.table_id=tc.table_id and ic.column_id=tc.column_id)
             WHERE ic.index_id = :index_id and ic.table_id = :table_id
             ORDER BY ic.sequence ASC
            """)
            idx_cols = connection.execute(INDEXCOL_SQL, index_id=r["index_id"],
                                          table_id=table_id)
            column_names = [ic["col"] for ic in idx_cols]
            index_info = {"name": r["name"],
                          "column_names": column_names}
            indexes.append(index_info)

        return indexes       

    def get_pk_constraint(self, connection, table_name, schema=None, **kw):
        table_id = self.get_table_id(connection, table_name, schema,
                                     info_cache=kw.get("info_cache"))

        # index_category=1 -> primary key
        PK_SQL = text("""
          SELECT t.table_name AS table_name, i.index_id as index_id,
                 i.index_name AS name
          FROM sys.sysidx i join sys.systab t on i.table_id=t.table_id
          WHERE t.table_id = :table_id and i.index_category = 1
        """)

        results = connection.execute(PK_SQL, table_id=table_id)
        pks = results.fetchone()
        results.close()

        if not pks:
            return {"constrained_columns": [],
                    "name": None}

        PKCOL_SQL = text("""
             select tc.column_name as col
             FROM sys.sysidxcol ic
             join sys.systabcol tc on (ic.table_id=tc.table_id and ic.column_id=tc.column_id)
             WHERE ic.index_id = :index_id and ic.table_id = :table_id
            """)
        pk_cols = connection.execute(PKCOL_SQL, index_id=pks["index_id"],
                                     table_id=table_id )
        column_names = [pkc["col"] for pkc in pk_cols]
        return {"constrained_columns": column_names,
                "name": pks["name"]}

    def get_indexes(self, connection, table_name, schema=None, **kw):
        table_id = self.get_table_id(connection, table_name, schema,
                                     info_cache=kw.get("info_cache"))

        # index_category=3 -> not primary key, not foreign key, not text index
        # unique=1 -> unique index, 2 -> unique constraint, 5->unique index with
        # nulls not distinct
        INDEX_SQL = text("""
          SELECT i.index_id as index_id, i.index_name AS name,
                 if i."unique" in (1,2,5) then 1 else 0 endif AS "unique"
          FROM sys.sysidx i join sys.systab t on i.table_id=t.table_id
          WHERE t.table_id = :table_id and i.index_category = 3
        """)

        results = connection.execute(INDEX_SQL, table_id=table_id)
        indexes = []
        for r in results:
            INDEXCOL_SQL = text("""
             select tc.column_name as col
             FROM sys.sysidxcol ic
             join sys.systabcol tc on (ic.table_id=tc.table_id and ic.column_id=tc.column_id)
             WHERE ic.index_id = :index_id and ic.table_id = :table_id
             ORDER BY ic.sequence ASC
            """)
            idx_cols = connection.execute(INDEXCOL_SQL, index_id=r["index_id"],
                                          table_id=table_id)
            column_names = [ic["col"] for ic in idx_cols]
            index_info = {"name": r["name"],
                          "unique": bool(r["unique"]),
                          "column_names": column_names}
            indexes.append(index_info)

        return indexes

def upgrade_6_0_to_6_1_plugins_cluster_attrs_use_ids_mapping(connection):
    """Convert plugin version mapping to plugin ids

    In Fuel 6.0 we had plugin version in cluster attributes
    to identify which plugin should be enabled or disabled.
    In 6.1 release we have plugins updates feature, it means
    that a single plugin can be updated/overwritten with newer
    version. For example 1.0.0 can be replaced with 1.0.1.
    As result we cannot rely on versions anymore, here we
    convert version mapping to plugin ids.

    See blueprint:
    https://blueprints.launchpad.net/fuel/+spec/plugins-security-fixes-delivery
    """
    select_attrs = text("""SELECT id, editable FROM attributes""")

    select_plugins = text(
        """SELECT id FROM plugins
        WHERE name = :plugin_name AND
        version = :plugin_version""")

    update_attrs = text(
        """UPDATE attributes
        SET editable = :editable
        WHERE id = :id""")

    attrs_list = connection.execute(select_attrs)
    for raw_attrs in attrs_list:
        attr_id = raw_attrs[0]
        attrs = jsonutils.loads(raw_attrs[1])

        for key, attr in six.iteritems(attrs):
            metadata = attr.get('metadata', {})
            plugin_version = metadata.get('plugin_version')
            if not plugin_version:
                continue

            plugin_name = key

            # If there is no plugin with such version
            # and name, it means that something was wrong
            # and somebody deleted the plugin from database
            # we must not fail migration in this case
            plugin_id = None

            plugins = list(connection.execute(
                select_plugins,
                plugin_name=plugin_name,
                plugin_version=plugin_version))

            if plugins:
                plugin_id = plugins[0][0]

            del attr['metadata']['plugin_version']
            attr['metadata']['plugin_id'] = plugin_id

        connection.execute(
            update_attrs,
            editable=jsonutils.dumps(attrs),
            id=attr_id)