[TIL] MySQL Practice Problems Part 3
Practice Problems - Programmers Lv.3
Change string format by using CONCAT()
select
u.user_id,
u.nickname,
concat(u.city, ' ', u.street_address1, ' ', u.street_address2) as 전체주소,
concat(substring(tlno, 1, 3), '-', substring(tlno, 4...
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