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126 lines
5.6 KiB
Python
126 lines
5.6 KiB
Python
#coding:utf-8
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"""
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ID: issue-5733
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ISSUE: 5733
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TITLE: Support GENERATED ALWAYS identity columns and OVERRIDE clause
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DESCRIPTION:
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JIRA: CORE-5463
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FBTEST: bugs.core_5463
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NOTES:
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[18.07.2023] pzotov
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Adjusted STDERR text after changes related to fixed gh-7638
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("OVERRIDING USER VALUE should be allowed for GENERATED ALWAYS AS IDENTITY."), see:
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https://github.com/FirebirdSQL/firebird/commit/844631b0ee473fd94dab61558f146a8268c0967b
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https://github.com/FirebirdSQL/firebird/commit/43c5426b48b2647c795143fcaa4a8e20c57fc9c8
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Old text:
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"OVERRIDING SYSTEM VALUE should be used to override the value of an identity column defined as 'GENERATED ALWAYS' in table/view ..."
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New text (after #7638 was fixed):
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"OVERRIDING clause should be used when an identity column defined as 'GENERATED ALWAYS' is present in the INSERT's field list for table table/view ..."
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"""
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import pytest
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from firebird.qa import *
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db = db_factory()
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test_script = """
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set list on;
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recreate table test_always(
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id_always int generated ALWAYS as identity (start with 11 increment 22) unique
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);
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recreate table test_default(
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id_default int generated BY DEFAULT as identity (start with -11 increment -22) unique
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);
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insert into test_default default values returning id_default; -- expected: -33
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insert into test_always default values returning id_always; -- expected: 33
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-- Comments taken from doc\\sql.extensions\\README.identity_columns.txt
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-- ==================================================================
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-- ........................................
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-- Identity columns are implicitly NOT NULL
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-- ........................................
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-- Statement failed, SQLSTATE = 42000
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-- ::: NB ::: Error text was changed for following statement.
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-- 1. For FB 5.x - since 28-JUN-2023 (old text was up to build 5.0.0.1088, new appeared since 5.0.0.1093)
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-- 2. For FB 4.x - since 08-JUL-2023 (old text was up to build 4.0.3.2958, new appeared since 4.0.3.2963)
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-- OLD TEXT: OVERRIDING SYSTEM VALUE should be used to override the value of an identity column defined as 'GENERATED ALWAYS' in table/view TEST_ALWAYS
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-- NEW TEXT: OVERRIDING clause should be used when an identity column defined as 'GENERATED ALWAYS' is present in the INSERT's field list for table table/view TEST_ALWAYS
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insert into test_always(id_always) values(null);
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-- Statement failed, SQLSTATE = 23000
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-- validation error for column "TEST"."id_default", value "*** null ***"
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insert into test_default(id_default) values(null);
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-- ........................................................................
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-- BY DEFAULT identity columns can be overriden in INSERT statements
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-- just specifying the value in the values list
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-- ........................................................................
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insert into test_default(id_default) values(-7654321) returning id_default;
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-- insert into test_default default values returning id_default; ==> -99 !
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-- ........................................................................
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-- However, for ALWAYS identity columns that is not allowed.
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-- To use the value passed in the INSERT statement for an ALWAYS column, you should pass
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-- OVERRIDING SYSTEM VALUE:
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-- ........................................................................
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-- 1) check that OVERRIDING SYSTEM VALUE clause does not affect on NOT_NULL constraint:
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-- Statement failed, SQLSTATE = 23000
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-- validation error for column "test_always"."ID_ALWAYS", value "*** null ***"
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insert into test_always(id_always) overriding system value values (null) returning id_always;
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-- 2) check ability to override system value by providing our own:
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insert into test_always(id_always) overriding system value values (7654321) returning id_always;
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-- .........................................................................
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-- OVERRIDING also supports a subclause to be used with BY DEFAULT columns,
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-- to ignore the value passed in INSERT and use the defined sequence:
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-- .........................................................................
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-- 1) check that attempt to pass NULL into VALUES list has no effect:
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insert into test_default(id_default) overriding user value values(null) returning id_default; -- expected: -99
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-- 2) check ability to pass allowed value but it also must be overriden by default one:
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insert into test_default(id_default) overriding user value values(-7654322) returning id_default; -- expected: -121
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"""
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act = isql_act('db', test_script)
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expected_stdout = """
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ID_DEFAULT -11
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ID_ALWAYS 11
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ID_DEFAULT -7654321
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ID_ALWAYS 7654321
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ID_DEFAULT -33
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ID_DEFAULT -55
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"""
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expected_stderr = """
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Statement failed, SQLSTATE = 42000
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OVERRIDING clause should be used when an identity column defined as 'GENERATED ALWAYS' is present in the INSERT's field list for table table/view TEST_ALWAYS
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Statement failed, SQLSTATE = 23000
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validation error for column "TEST_DEFAULT"."ID_DEFAULT", value "*** null ***"
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Statement failed, SQLSTATE = 23000
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validation error for column "TEST_ALWAYS"."ID_ALWAYS", value "*** null ***"
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"""
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@pytest.mark.version('>=4.0')
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def test_1(act: Action):
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act.expected_stdout = expected_stdout
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act.expected_stderr = expected_stderr
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act.execute()
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assert (act.clean_stderr == act.clean_expected_stderr and
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act.clean_stdout == act.clean_expected_stdout)
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