docs(10_Wiki): 위키 구조 정리 — 언어 튜토리얼 카테고리 폴더 제거 + 신규 자산 동기화

Topic_CSS/Topic_HTML/Topic_JavaScript/Topic_Prompt/Topic_Comfyui 등 기존 카테고리 폴더를 정리하고, Topic_Graphic/Dev 등 신규 산출물과 Topics 내부 세션/메모리 기록을 동기화.
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+---
+id: sql-insert-into-select
+title: "SQL Insert Into Select"
+category: "Database"
+status: "draft"
+verification_status: "conceptual"
+canonical_id: ""
+aliases: ["SQL INSERT INTO SELECT Statement", "INSERT INTO SELECT"]
+duplicate_of: ""
+source_trust_level: "B"
+confidence_score: 0.88
+created_at: 2026-07-04
+updated_at: 2026-07-04
+review_reason: ""
+merge_history: []
+tags: ["sql", "database", "w3schools", "insertintoselect"]
+raw_sources: ["https://www.w3schools.com/sql/sql_insert_into_select.asp"]
+applied_in: []
+github_commit: ""
+---
+
+# [[SQL Insert Into Select]]
+
+## 🎯 한 줄 통찰 (One-line insight)
+INSERT INTO SELECT copies rows from one existing table into another EXISTING table, leaving the target's current rows untouched — unlike SELECT INTO, which creates a brand-new table. [S1]
+
+## 🧠 핵심 개념 (Core concepts)
+- **INSERT INTO SELECT statement** — copies data from an existing table and inserts it into another existing table. [S1]
+- **Data type matching required** — source and target table column data types must match. [S1]
+- **Target rows preserved** — existing records in the target table are unaffected by the insert. [S1]
+- **Syntax (all columns)** — `INSERT INTO target_table SELECT * FROM source_table WHERE condition;` — requires column count/order to match exactly if names are omitted. [S1]
+- **Syntax (specific columns)** — `INSERT INTO target_table (column1, column2, ...) SELECT column1, column2, ... FROM source_table WHERE condition;`. [S1]
+
+## 🧩 추출된 패턴 (Extracted patterns)
+- **Partial-column copy leaves NULLs** — copying only some target columns (e.g. `CustomerName, City, Country`) leaves the unmapped target columns as NULL for the inserted rows. [S1]
+- **Filtered source-to-target copy** — a WHERE clause on the source SELECT restricts which rows get copied (e.g. only German suppliers). [S1]
+
+## 📖 세부 내용 (Details)
+- Copy specific columns from Suppliers into Customers: `INSERT INTO Customers (CustomerName, City, Country) SELECT SupplierName, City, Country FROM Suppliers;`. [S1]
+- Copy all columns (requires matching schema): `INSERT INTO Customers SELECT * FROM Suppliers;`. [S1]
+- Copy a filtered subset: `INSERT INTO Customers (CustomerName, City, Country) SELECT SupplierName, City, Country FROM Suppliers WHERE Country='Germany';`. [S1]
+
+## ⚖️ 모순 및 업데이트 (Contradictions & updates)
+소스에서 모순되는 정보는 발견되지 않음.
+
+## 🛠️ 적용 사례 (Applied in summary)
+현재 발견된 실제 적용 사례가 없습니다 — SELECT INTO(새 테이블 생성)와 대비되는, 기존 테이블 간 데이터 이관에 쓰이는 문서다. [S1]
+
+## 💻 코드 패턴 (Code patterns)
+Copy filtered rows between existing tables (SQL):
+```sql
+INSERT INTO Customers (CustomerName, City, Country)
+SELECT SupplierName, City, Country FROM Suppliers
+WHERE Country='Germany';
+```
+
+## ✅ 검증 상태 및 신뢰도
+- **상태:** draft
+- **검증 단계:** conceptual
+- **출처 신뢰도:** B (W3Schools — widely used educational reference, not a primary standards body)
+- **신뢰 점수:** 0.88
+- **중복 검사 결과:** 신규 생성 (New discovery)
+
+## 🔗 지식 그래프 (Knowledge Graph)
+- **상위/루트:** [[SQL Tutorial]]
+- **관련 개념:** [[SQL Select Into]], [[SQL Insert Into]], [[SQL Where]]
+- **참조 맥락:** 기존 테이블 간 데이터 이관 시 사용 — 새 테이블을 만들어야 한다면 대신 SELECT INTO를 사용.
+
+## 📚 출처 (Sources)
+- [S1] W3Schools — SQL INSERT INTO SELECT Statement — https://www.w3schools.com/sql/sql_insert_into_select.asp
+
+## 📝 변경 이력 (Change history)
+- 2026-07-04: Initial draft synthesized from the W3Schools "SQL INSERT INTO SELECT Statement" page (Astra wiki-curation, P-Reinforce v3.1 format).