SQL

1.[SQL] 정렬(ORDER BY)

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2.[SQL] 조건문(AND, OR)

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3.[SQL] 기초 함수

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4.[SQL] COALESCE

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5.[SQL] 이상치, 결측치 다루기

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6.[SQL] 컬럼 내 고유값 추출

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7.[SQL] GROUP BY

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8.[SQL] 시간 다루기

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9.[SQL] 기본구문

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10.[SQL] SELECT문 작성 순서

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11.[SQL] JOIN

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12.[SQL] Sub-query-1

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13.[SQL] Sub-query-2

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14.[SQL] view

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