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Added/Updated tests\functional\table\alter\test_06.py: Removed SHOW command for check result because its output often changes. It is enough for this test to obtain similar data from RDB tables. Created view and stored function to obtain type name by rdb$fields.rdb$field_type and .rdb$field_sub_type.
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pavel-zotov
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@ -2,31 +2,129 @@
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"""
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ID: table.alter-06
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TITLE: ALTER TABLE - ALTER - TYPE
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TITLE: ALTER TABLE. Alter type of some column.
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DESCRIPTION:
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FBTEST: functional.table.alter.06
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NOTES:
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[06.10.2023] pzotov
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Removed SHOW command for check result because its output often changes.
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It is enough for this test to obtain similar data from RDB tables.
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Created view and stored function to obtain type name by rdb$fields.rdb$field_type and .rdb$field_sub_type.
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"""
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import pytest
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from firebird.qa import *
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init_script = """CREATE TABLE test( id INTEGER NOT NULL);
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commit;
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"""
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db = db_factory(charset = 'utf8')
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db = db_factory(init=init_script)
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test_script = """
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set bail on;
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set list on;
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test_script = """ALTER TABLE test ALTER id TYPE VARCHAR(32);
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SHOW TABLE test;
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alter character set win1252 set default collation pxw_swedfin;
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commit;
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set term ^;
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create or alter function fn_get_type_name(a_type smallint, a_subtype smallint) returns varchar(2048) as
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declare ftype varchar(2048);
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begin
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ftype =
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decode( a_type
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, 7, decode(coalesce(a_subtype,0), 0, 'smallint', 1, 'numeric', 'unknown') -- 1 => small numerics [-327.68..327.67] (i.e. with mantissa that can be fit in -32768 ... 32767)
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, 8, decode(coalesce(a_subtype,0), 0, 'integer', 1, 'numeric', 2, 'decimal', 'unknown') -- 1: for numeric with mantissa >= 32768 and up to 9 digits, 2: for decimals up to 9 digits
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, 10, 'float'
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, 12, 'date'
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, 13, 'time without time zone'
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, 14, decode(coalesce(a_subtype,0), 0, 'char', 1, 'binary', 'unknown')
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, 16, decode(coalesce(a_subtype,0), 0, 'bigint', 1, 'numeric', 2, 'decimal', 'unknown')
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, 23, 'boolean'
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, 24, 'decfloat(16)'
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, 25, 'decfloat(34)'
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, 26, 'int128'
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, 27, 'double precision' -- also for numeric and decimal, both with size >= 10, if sql_dialect = 1
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, 28, 'time with time zone'
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, 29, 'timestamp with time zone'
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, 35, 'timestamp without time zone'
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, 37, decode(coalesce(a_subtype,0), 0, 'varchar', 1, 'varbinary', 'unknown')
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,261, decode(coalesce(a_subtype,0), 0, 'blob sub_type binary', 1, 'blob sub_type text', 'unknown')
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);
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if (ftype = 'unknown') then
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ftype = ftype || '__type_' || coalesce(a_type, '[null]') || '__subtype_' || coalesce(a_subtype, '[null]');
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return ftype;
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end
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^
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set term ;^
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commit;
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create view v_fields_info as
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select
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rf.rdb$field_name as field_name
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,upper(fn_get_type_name(f.rdb$field_type, f.rdb$field_sub_type)) as field_type
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-- ,rf.rdb$field_source
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-- ,rf.rdb$field_position
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,f.rdb$character_length as field_char_len
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,f.rdb$character_set_id as field_cset_id
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,f.rdb$collation_id as field_coll_id
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,c.rdb$character_set_name as cset_name
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--,c.rdb$default_collate_name
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--,k.rdb$base_collation_name
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,k.rdb$collation_name as field_collation
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--,k.rdb$collation_id
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from rdb$relation_fields rf
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join rdb$fields f on rf.rdb$field_source = f.rdb$field_name
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left join rdb$character_sets c on f.rdb$character_set_id = c.rdb$character_set_id
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left join rdb$collations k on c.rdb$character_set_id = k.rdb$character_set_id and f.rdb$collation_id = k.rdb$collation_id
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where rf.rdb$relation_name = upper('TEST')
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order by
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field_name
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,field_cset_id
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,field_coll_id
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;
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commit;
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create table test(id timestamp);
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commit;
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select v.* from v_fields_info v;
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commit;
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alter table test alter column id type varchar(50);
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commit;
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select v.* from v_fields_info v;
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-- this must FAIL:
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-- Statement failed, SQLSTATE = 42000
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-- unsuccessful metadata update
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-- -ALTER TABLE TEST failed
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-- -Cannot change datatype for column ID. Changing datatype is not supported for BLOB or ARRAY columns.
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alter table test alter column id type blob;
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"""
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act = isql_act('db', test_script)
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expected_stdout = """ID VARCHAR(32) Not Null
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expected_stdout = """
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FIELD_NAME ID
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FIELD_TYPE TIMESTAMP WITHOUT TIME ZONE
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FIELD_CHAR_LEN <null>
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FIELD_CSET_ID <null>
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FIELD_COLL_ID <null>
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CSET_NAME <null>
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FIELD_COLLATION <null>
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FIELD_NAME ID
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FIELD_TYPE VARCHAR
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FIELD_CHAR_LEN 50
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FIELD_CSET_ID 0
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FIELD_COLL_ID 0
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CSET_NAME NONE
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FIELD_COLLATION NONE
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Statement failed, SQLSTATE = 42000
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unsuccessful metadata update
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-ALTER TABLE TEST failed
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-Cannot change datatype for column ID. Changing datatype is not supported for BLOB or ARRAY columns.
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"""
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@pytest.mark.version('>=3.0')
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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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act.execute(combine_output = True)
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assert act.clean_stdout == act.clean_expected_stdout
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