mirror of
https://github.com/FirebirdSQL/firebird-qa.git
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77 lines
2.2 KiB
Python
77 lines
2.2 KiB
Python
#coding:utf-8
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"""
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ID: issue-1872
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ISSUE: 1872
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TITLE: ALTER mechanism for computed fields
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DESCRIPTION:
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Computed field had a lot of inconsistencies and problems
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It's possible to use a explicit type, but only together with a (new) computed expression.
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JIRA: CORE-1454
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FBTEST: bugs.core_1454
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"""
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import pytest
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from firebird.qa import *
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init_script = """
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recreate table t (
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f1 varchar(10),
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f2 varchar(10),
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cf computed by (f1 || ' - ' || f2)
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);
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insert into t (f1,f2) values ('0123456789','abcdefghij');
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commit;
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"""
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db = db_factory(init=init_script, charset='win1252')
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test_script = """
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set list on;
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set width fld_name 31;
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set width fld_expr 80;
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select f1,f2,cf from t;
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select b.rdb$field_name fld_name, cast(a.rdb$computed_source as varchar(80)) fld_expr, a.rdb$field_length fld_length
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from rdb$fields a
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join rdb$relation_fields b
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on a.rdb$field_name = b.rdb$field_source
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where b.rdb$field_name = upper('cf');
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alter table t alter cf type varchar(30) computed by (f1 || ' - ' || f2 || ' - more');
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commit;
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select f1,f2,cf from t;
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select b.rdb$field_name fld_name, cast(a.rdb$computed_source as varchar(80)) fld_expr, a.rdb$field_length fld_length
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from rdb$fields a
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join rdb$relation_fields b
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on a.rdb$field_name = b.rdb$field_source
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where b.rdb$field_name = upper('cf');
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"""
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act = isql_act('db', test_script)
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expected_stdout = """
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F1 0123456789
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F2 abcdefghij
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CF 0123456789 - abcdefghij
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FLD_NAME CF
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FLD_EXPR (f1 || ' - ' || f2)
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FLD_LENGTH 23
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F1 0123456789
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F2 abcdefghij
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CF 0123456789 - abcdefghij - more
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FLD_NAME CF
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FLD_EXPR (f1 || ' - ' || f2 || ' - more')
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FLD_LENGTH 30
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"""
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@pytest.mark.version('>=3')
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def test_1(act: Action):
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act.expected_stdout = expected_stdout
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act.execute()
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assert act.clean_stdout == act.clean_expected_stdout
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