drop table ’·Ч’»»’µЎ’НС’ём;
ERROR:  Relation '’·Ч’»»’µЎ’НС’ём' does not exist
create table ’·Ч’»»’µЎ’НС’ём (’НС’ём text, ’К¬’Оа’Ґі’Ўј’ҐЙ varchar, ’Ич’№Н1A’¤А’¤и char(16));
create index ’·Ч’»»’µЎ’НС’ёмindex1 on ’·Ч’»»’µЎ’НС’ём using btree (’НС’ём);
create index ’·Ч’»»’µЎ’НС’ёмindex2 on ’·Ч’»»’µЎ’НС’ём using hash (’К¬’Оа’Ґі’Ўј’ҐЙ);
insert into ’·Ч’»»’µЎ’НС’ём values('’Ґі’Ґу’ҐФ’Ґе’Ўј’Ґї’ҐЗ’ҐЈ’Ґ№’ҐЧ’Ґм’Ґ¤','’µЎA01’ѕе');
insert into ’·Ч’»»’µЎ’НС’ём values('’Ґі’Ґу’ҐФ’Ґе’Ўј’Ґї’Ґ°’Ґй’ҐХ’ҐЈ’ҐГ’ҐЇ’Ґ№','’К¬B10’Гж');
insert into ’·Ч’»»’µЎ’НС’ём values('’Ґі’Ґу’ҐФ’Ґе’Ўј’Ґї’ҐЧ’Ґн’Ґ°’Ґй’ҐЮ’Ўј','’їНZ01’Іј');
vacuum ’·Ч’»»’µЎ’НС’ём;
select * from ’·Ч’»»’µЎ’НС’ём;
                 ’НС’ём                  | ’К¬’Оа’Ґі’Ўј’ҐЙ | ’Ич’№Н1a’¤А’¤и 
-----------------------------------------+-----------------+----------------
 ’Ґі’Ґу’ҐФ’Ґе’Ўј’Ґї’ҐЗ’ҐЈ’Ґ№’ҐЧ’Ґм’Ґ¤    | ’µЎA01’ѕе       | 
 ’Ґі’Ґу’ҐФ’Ґе’Ўј’Ґї’Ґ°’Ґй’ҐХ’ҐЈ’ҐГ’ҐЇ’Ґ№ | ’К¬B10’Гж       | 
 ’Ґі’Ґу’ҐФ’Ґе’Ўј’Ґї’ҐЧ’Ґн’Ґ°’Ґй’ҐЮ’Ўј    | ’їНZ01’Іј       | 
(3 rows)

select * from ’·Ч’»»’µЎ’НС’ём where ’К¬’Оа’Ґі’Ўј’ҐЙ = '’їНZ01’Іј';
                ’НС’ём                | ’К¬’Оа’Ґі’Ўј’ҐЙ | ’Ич’№Н1a’¤А’¤и 
--------------------------------------+-----------------+----------------
 ’Ґі’Ґу’ҐФ’Ґе’Ўј’Ґї’ҐЧ’Ґн’Ґ°’Ґй’ҐЮ’Ўј | ’їНZ01’Іј       | 
(1 row)

select * from ’·Ч’»»’µЎ’НС’ём where ’К¬’Оа’Ґі’Ўј’ҐЙ ~* '’їНz01’Іј';
                ’НС’ём                | ’К¬’Оа’Ґі’Ўј’ҐЙ | ’Ич’№Н1a’¤А’¤и 
--------------------------------------+-----------------+----------------
 ’Ґі’Ґу’ҐФ’Ґе’Ўј’Ґї’ҐЧ’Ґн’Ґ°’Ґй’ҐЮ’Ўј | ’їНZ01’Іј       | 
(1 row)

select * from ’·Ч’»»’µЎ’НС’ём where ’К¬’Оа’Ґі’Ўј’ҐЙ like '_Z01_';
                ’НС’ём                | ’К¬’Оа’Ґі’Ўј’ҐЙ | ’Ич’№Н1a’¤А’¤и 
--------------------------------------+-----------------+----------------
 ’Ґі’Ґу’ҐФ’Ґе’Ўј’Ґї’ҐЧ’Ґн’Ґ°’Ґй’ҐЮ’Ўј | ’їНZ01’Іј       | 
(1 row)

select * from ’·Ч’»»’µЎ’НС’ём where ’К¬’Оа’Ґі’Ўј’ҐЙ like '_Z%';
                ’НС’ём                | ’К¬’Оа’Ґі’Ўј’ҐЙ | ’Ич’№Н1a’¤А’¤и 
--------------------------------------+-----------------+----------------
 ’Ґі’Ґу’ҐФ’Ґе’Ўј’Ґї’ҐЧ’Ґн’Ґ°’Ґй’ҐЮ’Ўј | ’їНZ01’Іј       | 
(1 row)

select * from ’·Ч’»»’µЎ’НС’ём where ’НС’ём ~ '’Ґі’Ґу’ҐФ’Ґе’Ўј’Ґї[’ҐЗ’Ґ°]';
                 ’НС’ём                  | ’К¬’Оа’Ґі’Ўј’ҐЙ | ’Ич’№Н1a’¤А’¤и 
-----------------------------------------+-----------------+----------------
 ’Ґі’Ґу’ҐФ’Ґе’Ўј’Ґї’ҐЗ’ҐЈ’Ґ№’ҐЧ’Ґм’Ґ¤    | ’µЎA01’ѕе       | 
 ’Ґі’Ґу’ҐФ’Ґе’Ўј’Ґї’Ґ°’Ґй’ҐХ’ҐЈ’ҐГ’ҐЇ’Ґ№ | ’К¬B10’Гж       | 
(2 rows)

select * from ’·Ч’»»’µЎ’НС’ём where ’НС’ём ~* '’Ґі’Ґу’ҐФ’Ґе’Ўј’Ґї[’ҐЗ’Ґ°]';
                 ’НС’ём                  | ’К¬’Оа’Ґі’Ўј’ҐЙ | ’Ич’№Н1a’¤А’¤и 
-----------------------------------------+-----------------+----------------
 ’Ґі’Ґу’ҐФ’Ґе’Ўј’Ґї’ҐЗ’ҐЈ’Ґ№’ҐЧ’Ґм’Ґ¤    | ’µЎA01’ѕе       | 
 ’Ґі’Ґу’ҐФ’Ґе’Ўј’Ґї’Ґ°’Ґй’ҐХ’ҐЈ’ҐГ’ҐЇ’Ґ№ | ’К¬B10’Гж       | 
(2 rows)

select *,character_length(’НС’ём) from ’·Ч’»»’µЎ’НС’ём;
                 ’НС’ём                  | ’К¬’Оа’Ґі’Ўј’ҐЙ | ’Ич’№Н1a’¤А’¤и | char_length 
-----------------------------------------+-----------------+----------------+-------------
 ’Ґі’Ґу’ҐФ’Ґе’Ўј’Ґї’ҐЗ’ҐЈ’Ґ№’ҐЧ’Ґм’Ґ¤    | ’µЎA01’ѕе       |                |          12
 ’Ґі’Ґу’ҐФ’Ґе’Ўј’Ґї’Ґ°’Ґй’ҐХ’ҐЈ’ҐГ’ҐЇ’Ґ№ | ’К¬B10’Гж       |                |          13
 ’Ґі’Ґу’ҐФ’Ґе’Ўј’Ґї’ҐЧ’Ґн’Ґ°’Ґй’ҐЮ’Ўј    | ’їНZ01’Іј       |                |          12
(3 rows)

select *,octet_length(’НС’ём) from ’·Ч’»»’µЎ’НС’ём;
                 ’НС’ём                  | ’К¬’Оа’Ґі’Ўј’ҐЙ | ’Ич’№Н1a’¤А’¤и | octet_length 
-----------------------------------------+-----------------+----------------+--------------
 ’Ґі’Ґу’ҐФ’Ґе’Ўј’Ґї’ҐЗ’ҐЈ’Ґ№’ҐЧ’Ґм’Ґ¤    | ’µЎA01’ѕе       |                |           36
 ’Ґі’Ґу’ҐФ’Ґе’Ўј’Ґї’Ґ°’Ґй’ҐХ’ҐЈ’ҐГ’ҐЇ’Ґ№ | ’К¬B10’Гж       |                |           39
 ’Ґі’Ґу’ҐФ’Ґе’Ўј’Ґї’ҐЧ’Ґн’Ґ°’Ґй’ҐЮ’Ўј    | ’їНZ01’Іј       |                |           36
(3 rows)

select *,position('’ҐЗ' in ’НС’ём) from ’·Ч’»»’µЎ’НС’ём;
                 ’НС’ём                  | ’К¬’Оа’Ґі’Ўј’ҐЙ | ’Ич’№Н1a’¤А’¤и | strpos 
-----------------------------------------+-----------------+----------------+--------
 ’Ґі’Ґу’ҐФ’Ґе’Ўј’Ґї’ҐЗ’ҐЈ’Ґ№’ҐЧ’Ґм’Ґ¤    | ’µЎA01’ѕе       |                |      7
 ’Ґі’Ґу’ҐФ’Ґе’Ўј’Ґї’Ґ°’Ґй’ҐХ’ҐЈ’ҐГ’ҐЇ’Ґ№ | ’К¬B10’Гж       |                |      0
 ’Ґі’Ґу’ҐФ’Ґе’Ўј’Ґї’ҐЧ’Ґн’Ґ°’Ґй’ҐЮ’Ўј    | ’їНZ01’Іј       |                |      0
(3 rows)

select *,substring(’НС’ём from 10 for 4) from ’·Ч’»»’µЎ’НС’ём;
                 ’НС’ём                  | ’К¬’Оа’Ґі’Ўј’ҐЙ | ’Ич’№Н1a’¤А’¤и |    substr    
-----------------------------------------+-----------------+----------------+--------------
 ’Ґі’Ґу’ҐФ’Ґе’Ўј’Ґї’ҐЗ’ҐЈ’Ґ№’ҐЧ’Ґм’Ґ¤    | ’µЎA01’ѕе       |                | ’ҐЧ’Ґм’Ґ¤
 ’Ґі’Ґу’ҐФ’Ґе’Ўј’Ґї’Ґ°’Ґй’ҐХ’ҐЈ’ҐГ’ҐЇ’Ґ№ | ’К¬B10’Гж       |                | ’ҐЈ’ҐГ’ҐЇ’Ґ№
 ’Ґі’Ґу’ҐФ’Ґе’Ўј’Ґї’ҐЧ’Ґн’Ґ°’Ґй’ҐЮ’Ўј    | ’їНZ01’Іј       |                | ’Ґй’ҐЮ’Ўј
(3 rows)

drop table ‘јЖ‘Лг‘»ъ‘Кх‘Уп;
ERROR:  Relation '‘јЖ‘Лг‘»ъ‘Кх‘Уп' does not exist
create table ‘јЖ‘Лг‘»ъ‘Кх‘Уп(‘Кх‘Уп text, ‘·Ц‘Аа‘єЕ varchar, ‘±ё‘Чў1A char(16));
create index ‘јЖ‘Лг‘»ъ‘Кх‘Упindex1 on ‘јЖ‘Лг‘»ъ‘Кх‘Уп using btree(‘Кх‘Уп);
create index ‘јЖ‘Лг‘»ъ‘Кх‘Упindex2 on ‘јЖ‘Лг‘»ъ‘Кх‘Уп using btree(‘·Ц‘Аа‘єЕ);
insert into ‘јЖ‘Лг‘»ъ‘Кх‘Уп values('‘µз‘ДФ‘ПФ‘Кѕ‘ЖБ','‘»ъA01‘ЙП');
insert into ‘јЖ‘Лг‘»ъ‘Кх‘Уп values('‘µз‘ДФ‘Нј‘РО','‘·ЦB01‘ЦР');
insert into ‘јЖ‘Лг‘»ъ‘Кх‘Уп values('‘µз‘ДФ‘іМ‘Рт‘Ф±','‘ИЛZ01‘ПВ');
vacuum ‘јЖ‘Лг‘»ъ‘Кх‘Уп;
select * from ‘јЖ‘Лг‘»ъ‘Кх‘Уп;
     ‘Кх‘Уп      | ‘·Ц‘Аа‘єЕ | ‘±ё‘Чў1a 
-----------------+-----------+----------
 ‘µз‘ДФ‘ПФ‘Кѕ‘ЖБ | ‘»ъA01‘ЙП | 
 ‘µз‘ДФ‘Нј‘РО    | ‘·ЦB01‘ЦР | 
 ‘µз‘ДФ‘іМ‘Рт‘Ф± | ‘ИЛZ01‘ПВ | 
(3 rows)

select * from ‘јЖ‘Лг‘»ъ‘Кх‘Уп where ‘·Ц‘Аа‘єЕ = '‘ИЛZ01‘ПВ';
     ‘Кх‘Уп      | ‘·Ц‘Аа‘єЕ | ‘±ё‘Чў1a 
-----------------+-----------+----------
 ‘µз‘ДФ‘іМ‘Рт‘Ф± | ‘ИЛZ01‘ПВ | 
(1 row)

select * from ‘јЖ‘Лг‘»ъ‘Кх‘Уп where ‘·Ц‘Аа‘єЕ ~* '‘ИЛz01‘ПВ';
     ‘Кх‘Уп      | ‘·Ц‘Аа‘єЕ | ‘±ё‘Чў1a 
-----------------+-----------+----------
 ‘µз‘ДФ‘іМ‘Рт‘Ф± | ‘ИЛZ01‘ПВ | 
(1 row)

select * from ‘јЖ‘Лг‘»ъ‘Кх‘Уп where ‘·Ц‘Аа‘єЕ like '_Z01_';
     ‘Кх‘Уп      | ‘·Ц‘Аа‘єЕ | ‘±ё‘Чў1a 
-----------------+-----------+----------
 ‘µз‘ДФ‘іМ‘Рт‘Ф± | ‘ИЛZ01‘ПВ | 
(1 row)

select * from ‘јЖ‘Лг‘»ъ‘Кх‘Уп where ‘·Ц‘Аа‘єЕ like '_Z%';
     ‘Кх‘Уп      | ‘·Ц‘Аа‘єЕ | ‘±ё‘Чў1a 
-----------------+-----------+----------
 ‘µз‘ДФ‘іМ‘Рт‘Ф± | ‘ИЛZ01‘ПВ | 
(1 row)

select * from ‘јЖ‘Лг‘»ъ‘Кх‘Уп where ‘Кх‘Уп ~ '‘µз‘ДФ[‘ПФ‘Нј]';
     ‘Кх‘Уп      | ‘·Ц‘Аа‘єЕ | ‘±ё‘Чў1a 
-----------------+-----------+----------
 ‘µз‘ДФ‘ПФ‘Кѕ‘ЖБ | ‘»ъA01‘ЙП | 
 ‘µз‘ДФ‘Нј‘РО    | ‘·ЦB01‘ЦР | 
(2 rows)

select * from ‘јЖ‘Лг‘»ъ‘Кх‘Уп where ‘Кх‘Уп ~* '‘µз‘ДФ[‘ПФ‘Нј]';
     ‘Кх‘Уп      | ‘·Ц‘Аа‘єЕ | ‘±ё‘Чў1a 
-----------------+-----------+----------
 ‘µз‘ДФ‘ПФ‘Кѕ‘ЖБ | ‘»ъA01‘ЙП | 
 ‘µз‘ДФ‘Нј‘РО    | ‘·ЦB01‘ЦР | 
(2 rows)

select *,character_length(‘Кх‘Уп) from ‘јЖ‘Лг‘»ъ‘Кх‘Уп;
     ‘Кх‘Уп      | ‘·Ц‘Аа‘єЕ | ‘±ё‘Чў1a | char_length 
-----------------+-----------+----------+-------------
 ‘µз‘ДФ‘ПФ‘Кѕ‘ЖБ | ‘»ъA01‘ЙП |          |           5
 ‘µз‘ДФ‘Нј‘РО    | ‘·ЦB01‘ЦР |          |           4
 ‘µз‘ДФ‘іМ‘Рт‘Ф± | ‘ИЛZ01‘ПВ |          |           5
(3 rows)

select *,octet_length(‘Кх‘Уп) from ‘јЖ‘Лг‘»ъ‘Кх‘Уп;
     ‘Кх‘Уп      | ‘·Ц‘Аа‘єЕ | ‘±ё‘Чў1a | octet_length 
-----------------+-----------+----------+--------------
 ‘µз‘ДФ‘ПФ‘Кѕ‘ЖБ | ‘»ъA01‘ЙП |          |           15
 ‘µз‘ДФ‘Нј‘РО    | ‘·ЦB01‘ЦР |          |           12
 ‘µз‘ДФ‘іМ‘Рт‘Ф± | ‘ИЛZ01‘ПВ |          |           15
(3 rows)

select *,position('‘ПФ' in ‘Кх‘Уп) from ‘јЖ‘Лг‘»ъ‘Кх‘Уп;
     ‘Кх‘Уп      | ‘·Ц‘Аа‘єЕ | ‘±ё‘Чў1a | strpos 
-----------------+-----------+----------+--------
 ‘µз‘ДФ‘ПФ‘Кѕ‘ЖБ | ‘»ъA01‘ЙП |          |      3
 ‘µз‘ДФ‘Нј‘РО    | ‘·ЦB01‘ЦР |          |      0
 ‘µз‘ДФ‘іМ‘Рт‘Ф± | ‘ИЛZ01‘ПВ |          |      0
(3 rows)

select *,substring(‘Кх‘Уп from 3 for 4) from ‘јЖ‘Лг‘»ъ‘Кх‘Уп;
     ‘Кх‘Уп      | ‘·Ц‘Аа‘єЕ | ‘±ё‘Чў1a |  substr   
-----------------+-----------+----------+-----------
 ‘µз‘ДФ‘ПФ‘Кѕ‘ЖБ | ‘»ъA01‘ЙП |          | ‘ПФ‘Кѕ‘ЖБ
 ‘µз‘ДФ‘Нј‘РО    | ‘·ЦB01‘ЦР |          | ‘Нј‘РО
 ‘µз‘ДФ‘іМ‘Рт‘Ф± | ‘ИЛZ01‘ПВ |          | ‘іМ‘Рт‘Ф±
(3 rows)

drop table “НЄ“Я©“С¦“їл“ѕо;
ERROR:  Relation '“НЄ“Я©“С¦“їл“ѕо' does not exist
create table “НЄ“Я©“С¦“їл“ѕо (“їл“ѕо text, “ЭВ“Чѕ“ДЪ“µе varchar, “єс“°н1A“¶у“±ё char(16));
create index “НЄ“Я©“С¦“їл“ѕоindex1 on “НЄ“Я©“С¦“їл“ѕо using btree (“їл“ѕо);
create index “НЄ“Я©“С¦“їл“ѕоindex2 on “НЄ“Я©“С¦“їл“ѕо using hash (“ЭВ“Чѕ“ДЪ“µе);
insert into “НЄ“Я©“С¦“їл“ѕо values('“ДД“З»“ЕН“µр“Ѕє“ЗГ“·№“АМ', '“С¦A01“Яѕ');
insert into “НЄ“Я©“С¦“їл“ѕо values('“ДД“З»“ЕН“±Ч“·Ў“ЗИ“Ѕє', '“ЭВB10“сй');
insert into “НЄ“Я©“С¦“їл“ѕо values('“ДД“З»“ЕН“ЗБ“·О“±Ч“·Ў“ёУ', '“мСZ01“щ»');
vacuum “НЄ“Я©“С¦“їл“ѕо;
select * from “НЄ“Я©“С¦“їл“ѕо;
          “їл“ѕо          | “ЭВ“Чѕ“ДЪ“µе | “єс“°н1a“¶у“±ё 
--------------------------+--------------+----------------
 “ДД“З»“ЕН“µр“Ѕє“ЗГ“·№“АМ | “С¦A01“Яѕ    | 
 “ДД“З»“ЕН“±Ч“·Ў“ЗИ“Ѕє    | “ЭВB10“сй    | 
 “ДД“З»“ЕН“ЗБ“·О“±Ч“·Ў“ёУ | “мСZ01“щ»    | 
(3 rows)

select * from “НЄ“Я©“С¦“їл“ѕо where “ЭВ“Чѕ“ДЪ“µе = '“мСZ01“щ»';
          “їл“ѕо          | “ЭВ“Чѕ“ДЪ“µе | “єс“°н1a“¶у“±ё 
--------------------------+--------------+----------------
 “ДД“З»“ЕН“ЗБ“·О“±Ч“·Ў“ёУ | “мСZ01“щ»    | 
(1 row)

select * from “НЄ“Я©“С¦“їл“ѕо where “ЭВ“Чѕ“ДЪ“µе ~* '“мСz01“щ»';
          “їл“ѕо          | “ЭВ“Чѕ“ДЪ“µе | “єс“°н1a“¶у“±ё 
--------------------------+--------------+----------------
 “ДД“З»“ЕН“ЗБ“·О“±Ч“·Ў“ёУ | “мСZ01“щ»    | 
(1 row)

select * from “НЄ“Я©“С¦“їл“ѕо where “ЭВ“Чѕ“ДЪ“µе like '_Z01_';
          “їл“ѕо          | “ЭВ“Чѕ“ДЪ“µе | “єс“°н1a“¶у“±ё 
--------------------------+--------------+----------------
 “ДД“З»“ЕН“ЗБ“·О“±Ч“·Ў“ёУ | “мСZ01“щ»    | 
(1 row)

select * from “НЄ“Я©“С¦“їл“ѕо where “ЭВ“Чѕ“ДЪ“µе like '_Z%';
          “їл“ѕо          | “ЭВ“Чѕ“ДЪ“µе | “єс“°н1a“¶у“±ё 
--------------------------+--------------+----------------
 “ДД“З»“ЕН“ЗБ“·О“±Ч“·Ў“ёУ | “мСZ01“щ»    | 
(1 row)

select * from “НЄ“Я©“С¦“їл“ѕо where “їл“ѕо ~ '“ДД“З»“ЕН[“µр“±Ч]';
          “їл“ѕо          | “ЭВ“Чѕ“ДЪ“µе | “єс“°н1a“¶у“±ё 
--------------------------+--------------+----------------
 “ДД“З»“ЕН“µр“Ѕє“ЗГ“·№“АМ | “С¦A01“Яѕ    | 
 “ДД“З»“ЕН“±Ч“·Ў“ЗИ“Ѕє    | “ЭВB10“сй    | 
(2 rows)

select * from “НЄ“Я©“С¦“їл“ѕо where “їл“ѕо ~* '“ДД“З»“ЕН[“µр“±Ч]';
          “їл“ѕо          | “ЭВ“Чѕ“ДЪ“µе | “єс“°н1a“¶у“±ё 
--------------------------+--------------+----------------
 “ДД“З»“ЕН“µр“Ѕє“ЗГ“·№“АМ | “С¦A01“Яѕ    | 
 “ДД“З»“ЕН“±Ч“·Ў“ЗИ“Ѕє    | “ЭВB10“сй    | 
(2 rows)

select *,character_length(“їл“ѕо) from “НЄ“Я©“С¦“їл“ѕо;
          “їл“ѕо          | “ЭВ“Чѕ“ДЪ“µе | “єс“°н1a“¶у“±ё | char_length 
--------------------------+--------------+----------------+-------------
 “ДД“З»“ЕН“µр“Ѕє“ЗГ“·№“АМ | “С¦A01“Яѕ    |                |           8
 “ДД“З»“ЕН“±Ч“·Ў“ЗИ“Ѕє    | “ЭВB10“сй    |                |           7
 “ДД“З»“ЕН“ЗБ“·О“±Ч“·Ў“ёУ | “мСZ01“щ»    |                |           8
(3 rows)

select *,octet_length(“їл“ѕо) from “НЄ“Я©“С¦“їл“ѕо;
          “їл“ѕо          | “ЭВ“Чѕ“ДЪ“µе | “єс“°н1a“¶у“±ё | octet_length 
--------------------------+--------------+----------------+--------------
 “ДД“З»“ЕН“µр“Ѕє“ЗГ“·№“АМ | “С¦A01“Яѕ    |                |           24
 “ДД“З»“ЕН“±Ч“·Ў“ЗИ“Ѕє    | “ЭВB10“сй    |                |           21
 “ДД“З»“ЕН“ЗБ“·О“±Ч“·Ў“ёУ | “мСZ01“щ»    |                |           24
(3 rows)

select *,position('“µр' in “їл“ѕо) from “НЄ“Я©“С¦“їл“ѕо;
          “їл“ѕо          | “ЭВ“Чѕ“ДЪ“µе | “єс“°н1a“¶у“±ё | strpos 
--------------------------+--------------+----------------+--------
 “ДД“З»“ЕН“µр“Ѕє“ЗГ“·№“АМ | “С¦A01“Яѕ    |                |      4
 “ДД“З»“ЕН“±Ч“·Ў“ЗИ“Ѕє    | “ЭВB10“сй    |                |      0
 “ДД“З»“ЕН“ЗБ“·О“±Ч“·Ў“ёУ | “мСZ01“щ»    |                |      0
(3 rows)

select *,substring(“їл“ѕо from 3 for 4) from “НЄ“Я©“С¦“їл“ѕо;
          “їл“ѕо          | “ЭВ“Чѕ“ДЪ“µе | “єс“°н1a“¶у“±ё |    substr    
--------------------------+--------------+----------------+--------------
 “ДД“З»“ЕН“µр“Ѕє“ЗГ“·№“АМ | “С¦A01“Яѕ    |                | “ЕН“µр“Ѕє“ЗГ
 “ДД“З»“ЕН“±Ч“·Ў“ЗИ“Ѕє    | “ЭВB10“сй    |                | “ЕН“±Ч“·Ў“ЗИ
 “ДД“З»“ЕН“ЗБ“·О“±Ч“·Ў“ёУ | “мСZ01“щ»    |                | “ЕН“ЗБ“·О“±Ч
(3 rows)

drop table test;
ERROR:  Relation 'test' does not exist
create table test (t text);
insert into test values('ENGLISH');
insert into test values('FRANЃЗAIS');
insert into test values('ESPAЃСOL');
insert into test values('ЃНSLENSKA');
insert into test values('ENGLISH FRANЃЗAIS ESPAЃСOL ЃНSLENSKA');
vacuum test;
select * from test;
                  t                   
--------------------------------------
 ENGLISH
 FRANЃЗAIS
 ESPAЃСOL
 ЃНSLENSKA
 ENGLISH FRANЃЗAIS ESPAЃСOL ЃНSLENSKA
(5 rows)

select * from test where t = 'ESPAЃСOL';
    t     
----------
 ESPAЃСOL
(1 row)

select * from test where t ~* 'espaЃСol';
                  t                   
--------------------------------------
 ESPAЃСOL
 ENGLISH FRANЃЗAIS ESPAЃСOL ЃНSLENSKA
(2 rows)

select *,character_length(t) from test;
                  t                   | char_length 
--------------------------------------+-------------
 ENGLISH                              |           7
 FRANЃЗAIS                            |           8
 ESPAЃСOL                             |           7
 ЃНSLENSKA                            |           8
 ENGLISH FRANЃЗAIS ESPAЃСOL ЃНSLENSKA |          33
(5 rows)

select *,octet_length(t) from test;
                  t                   | octet_length 
--------------------------------------+--------------
 ENGLISH                              |            7
 FRANЃЗAIS                            |            9
 ESPAЃСOL                             |            8
 ЃНSLENSKA                            |            9
 ENGLISH FRANЃЗAIS ESPAЃСOL ЃНSLENSKA |           36
(5 rows)

select *,position('L' in t) from test;
                  t                   | strpos 
--------------------------------------+--------
 ENGLISH                              |      4
 FRANЃЗAIS                            |      0
 ESPAЃСOL                             |      7
 ЃНSLENSKA                            |      3
 ENGLISH FRANЃЗAIS ESPAЃСOL ЃНSLENSKA |      4
(5 rows)

select *,substring(t from 3 for 4) from test;
                  t                   | substr 
--------------------------------------+--------
 ENGLISH                              | GLIS
 FRANЃЗAIS                            | ANЃЗA
 ESPAЃСOL                             | PAЃСO
 ЃНSLENSKA                            | LENS
 ENGLISH FRANЃЗAIS ESPAЃСOL ЃНSLENSKA | GLIS
(5 rows)