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DATABASE #1

Open YUL0426 opened 3 years ago

YUL0426 commented 3 years ago

SELECT ~ FROM (CASE ~ END) ORDER BY ASC/DESC LIMIT

YUL0426 commented 3 years ago

SUBSTRING : 문자열의 일부를 추출하는 함수 ex) SELECT DISTINCT(SUBSTRING(address, 1, 2)) FROM member;