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- -- Функции SQL для символьных типов данных (LOWER, UPPER, INITCAP, LENGTH, CHR, CONCAT, TRIM, TRANSLATE, REPLACE, INSTR, SUBSTR, TO_CHAR)
- -- https://youtu.be/myYvKpjquGw
- -------------------------------------------
- -- Примеры команд SQL в рамках урока #23
- SELECT LOWER('Обучение SQL') FROM DUAL;
- SELECT UPPER('Обучение SQL') FROM DUAL;
- SELECT INITCAP('обучение SQL') FROM DUAL;
- SELECT LENGTH('Обучение SQL') FROM DUAL;
- SELECT CHR(37) FROM DUAL;
- SELECT CHR(34) FROM DUAL;
- SELECT CHR(12) FROM DUAL;
- SELECT CONCAT('Значение 1', ' Значение 2') FROM dual;
- SELECT CONCAT(CONCAT('Значение 1 ', 'Значение 2'), ' Значение 3 ') FROM dual;
- SELECT 'Значение 1' || ' Значение 2' || ' Значение 3' FROM dual;
- SELECT TRIM('m' FROM 'mSQL') FROM DUAL;
- SELECT TRIM('П' FROM 'ПриветП') FROM DUAL;
- SELECT TRIM(' Обучение SQL ') FROM DUAL;
- SELECT TRANSLATE('123-SQL-123', '123', '456') FROM DUAL;
- SELECT REPLACE('Базовый курс/мастер-класс по SQL', 'мастер-класс', 'вебинар') FROM DUAL;
- SELECT INSTR('Обучение SQL с нуля до профи', 'SQL') FROM DUAL;
- SELECT SUBSTR('Обучение SQL с нуля', 10, 3) FROM DUAL;
- SELECT TO_CHAR(1234.567, '9999.9') FROM DUAL;
- SELECT TO_CHAR(1234.567, '9,999.99') FROM DUAL;
- SELECT TO_CHAR(1234.567, '000099') FROM DUAL;
- SELECT SYSDATE FROM DUAL;
- SELECT TO_CHAR(SYSDATE, 'dd.mm.yyyy') FROM DUAL;
- SELECT TO_CHAR(SYSDATE, 'yyyy.mm.dd') FROM DUAL;
- SELECT TO_CHAR(SYSDATE, 'FMMonth DD, YYYY') FROM DUAL;
- SELECT TO_CHAR(SYSDATE, 'YYYY') FROM DUAL;
- SELECT TO_CHAR(SYSDATE, 'Q') FROM DUAL;
- SELECT TO_CHAR(SYSDATE, 'DAY') FROM DUAL;
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