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91 lines
2.7 KiB
Python
91 lines
2.7 KiB
Python
#coding:utf-8
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#
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# id: bugs.core_1454
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# title: ALTER mechanism for computed fields
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# decription: 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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# cf core-0847
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# tracker_id: CORE-1454
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# min_versions: ['2.5']
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# versions: 2.5.0
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# qmid: None
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import pytest
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from firebird.qa import db_factory, isql_act, Action
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# version: 2.5.0
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# resources: None
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substitutions_1 = []
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init_script_1 = """
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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_1 = db_factory(page_size=4096, sql_dialect=3, init=init_script_1)
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test_script_1 = """
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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_1 = isql_act('db_1', test_script_1, substitutions=substitutions_1)
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expected_stdout_1 = """
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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 92
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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 120
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"""
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@pytest.mark.version('>=2.5.0')
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def test_1(act_1: Action):
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act_1.expected_stdout = expected_stdout_1
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act_1.execute()
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assert act_1.clean_expected_stdout == act_1.clean_stdout
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