HackerRank/SQL
hackerrank Draw The Triangle 2
챠오위
2021. 2. 18. 23:55
1) SET
1-1)
SET @row := 0;
2) * 반복
2-1)
REPEAT( "* ", @row := @row + 1 )
3) INFORMATION_SCHEMA.tables
3-1)
SET @row :=0;
SELECT REPEAT("* ", @row := @row + 1 )
FROM INFORMATION_SCHEMA.tables
4) where절
4-1)
SET @row := 0;
SELECT REPEAT("* ", @row := @row + 1 )
FROM INFORMATION_SCHEMA.tables
WHERE @row < 20;
4-1) 결과
이하 20줄까지 출력된다.
SUCCESS!!