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
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
|
# -*- coding: utf-8 -*-
#
# Copyright (c) 2015-2020, Cédric Krier
# Copyright (c) 2015-2020, B2CK
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# * Neither the name of the <organization> nor the
# names of its contributors may be used to endorse or promote products
# derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
import unittest
from sql import Table, Lateral, From
from sql.functions import Function
class TestLateral(unittest.TestCase):
def test_lateral_select(self):
t1 = Table('t1')
t2 = Table('t2')
lateral = Lateral(t2.select(where=t2.id == t1.t2))
query = From([t1, lateral]).select()
self.assertEqual(str(query),
'SELECT * FROM "t1" AS "a", LATERAL '
'(SELECT * FROM "t2" AS "c" WHERE ("c"."id" = "a"."t2")) AS "b"')
self.assertEqual(tuple(query.params), ())
def test_lateral_function(self):
class Func(Function):
_function = 'FUNC'
t = Table('t')
lateral = Lateral(Func(t.a))
query = From([t, lateral]).select()
self.assertEqual(str(query),
'SELECT * FROM "t" AS "a", LATERAL FUNC("a"."a") AS "b"')
self.assertEqual(tuple(query.params), ())
|
