blob: 90164850d4cb8a60915a75dae413fa3f4bfdf881 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
|
.. _functions_toplevel:
.. _generic_functions:
=========================
SQL and Generic Functions
=========================
.. module:: sqlalchemy.sql.expression
SQL functions which are known to SQLAlchemy with regards to database-specific
rendering, return types and argument behavior. Generic functions are invoked
like all SQL functions, using the :attr:`func` attribute::
select([func.count()]).select_from(sometable)
Note that any name not known to :attr:`func` generates the function name as is
- there is no restriction on what SQL functions can be called, known or
unknown to SQLAlchemy, built-in or user defined. The section here only
describes those functions where SQLAlchemy already knows what argument and
return types are in use.
.. automodule:: sqlalchemy.sql.functions
:members:
:undoc-members:
:exclude-members: func
|
