#coding:utf-8

"""
ID:          issue-6873
ISSUE:       6873
TITLE:       SIMILAR TO does not use index when pattern starts with non-wildcard character (in contrary to LIKE)
DESCRIPTION:
FBTEST:      bugs.gh_6873
"""

import pytest
from firebird.qa import *

db = db_factory()

test_script = """
	create collation name_coll_ci for utf8 from unicode case insensitive;
	create collation name_coll_ci_ai for utf8 from unicode case insensitive accent insensitive;

	create domain dm_name_ci as varchar(10) character set utf8 collate name_coll_ci;
	create domain dm_name_ci_ai as varchar(10) character set utf8 collate name_coll_ci_ai;

	recreate table test(
		 id int generated by default as identity constraint test_pk primary key
		,x1 varchar(10)
		,y1 varchar(10)
		,x2 dm_name_ci
		,y2 dm_name_ci
		,x3 dm_name_ci_ai
		,y3 dm_name_ci_ai
	);

	insert into test(x1, x2, x3) values('',    '',   ''   );
	insert into test(x1, x2, x3) values('a',   'Ⱥ',  'Ă'  );
	insert into test(x1, x2, x3) values(' a',  ' Ⱥ', ' Ă' );
	insert into test(x1, x2, x3) values('aa',  'ȺȺ', 'ĂĂ' );
	update test set y1 = x1, y2 = x2, y3 = x3;
	commit;

	create index test_x1_asc on test(x1);
	create descending index test_y1_dec on test(y1);
	create index test_x2_asc on test(x2);
	create descending index test_y2_dec on test(y2);
	create index test_x3_asc on test(x3);
	create descending index test_y3_dec on test(y3);
	commit;

	set list on;
	set plan on;

	-- All following statements must use apropriate INDEXES:
	--set echo on;

	select id from test where x1 similar to 'a%';

	select id from test where x1 similar to 'a_';

	select id from test where x1 similar to 'a';



	select id from test where y1 similar to 'a%';

	select id from test where y1 similar to 'a_';

	select id from test where y1 similar to 'a';



	select id from test where x2 similar to 'ⱥ%';

	select id from test where x2 similar to 'ⱥ_';

	select id from test where x2 similar to 'ⱥ';




	select id from test where y2 similar to 'ⱥ%';

	select id from test where y2 similar to 'ⱥ_';

	select id from test where y2 similar to 'ⱥ';




	select id from test where x3 similar to 'Â%';

	select id from test where x3 similar to 'Â_';

	select id from test where x3 similar to 'Â';




	select id from test where y3 similar to 'Â%';

	select id from test where y3 similar to 'Â_';

	select id from test where y3 similar to 'Â';

"""

act = isql_act('db', test_script)

expected_stdout = """
	PLAN (TEST INDEX (TEST_X1_ASC))
	ID                              2
	ID                              4

	PLAN (TEST INDEX (TEST_X1_ASC))
	ID                              4

	PLAN (TEST INDEX (TEST_X1_ASC))
	ID                              2

	PLAN (TEST INDEX (TEST_Y1_DEC))
	ID                              2
	ID                              4

	PLAN (TEST INDEX (TEST_Y1_DEC))
	ID                              4

	PLAN (TEST INDEX (TEST_Y1_DEC))
	ID                              2

	PLAN (TEST INDEX (TEST_X2_ASC))
	ID                              2
	ID                              4

	PLAN (TEST INDEX (TEST_X2_ASC))
	ID                              4

	PLAN (TEST INDEX (TEST_X2_ASC))
	ID                              2

	PLAN (TEST INDEX (TEST_Y2_DEC))
	ID                              2
	ID                              4

	PLAN (TEST INDEX (TEST_Y2_DEC))
	ID                              4

	PLAN (TEST INDEX (TEST_Y2_DEC))
	ID                              2

	PLAN (TEST INDEX (TEST_X3_ASC))
	ID                              2
	ID                              4

	PLAN (TEST INDEX (TEST_X3_ASC))
	ID                              4

	PLAN (TEST INDEX (TEST_X3_ASC))
	ID                              2

	PLAN (TEST INDEX (TEST_Y3_DEC))
	ID                              2
	ID                              4

	PLAN (TEST INDEX (TEST_Y3_DEC))
	ID                              4

	PLAN (TEST INDEX (TEST_Y3_DEC))
	ID                              2
"""

@pytest.mark.version('>=5.0')
def test_1(act: Action):
    act.expected_stdout = expected_stdout
    act.execute()
    assert act.clean_stdout == act.clean_expected_stdout