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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.
3.4 KiB
3.4 KiB
id, title, category, status, verification_status, canonical_id, aliases, duplicate_of, source_trust_level, confidence_score, created_at, updated_at, review_reason, merge_history, tags, raw_sources, applied_in, github_commit
| id | title | category | status | verification_status | canonical_id | aliases | duplicate_of | source_trust_level | confidence_score | created_at | updated_at | review_reason | merge_history | tags | raw_sources | applied_in | github_commit | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| sql-create-table | SQL Create Table | Database | draft | conceptual |
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B | 0.9 | 2026-07-04 | 2026-07-04 |
|
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SQL Create Table
🎯 한 줄 통찰 (One-line insight)
CREATE TABLE defines a new table's columns, data types, and constraints, and a variant lets a new table be created directly from another table's SELECT result. [S1]
🧠 핵심 개념 (Core concepts)
- CREATE TABLE statement — creates a new table in a database. [S1]
- Syntax —
CREATE TABLE table_name (column1 datatype constraint, column2 datatype constraint, ...);. [S1] - Constraint parameter — optional; specifies data-integrity rules like PRIMARY KEY or NOT NULL. [S1]
- CREATE TABLE ... AS SELECT — creates a new table populated from an existing table's query result. [S1]
🧩 추출된 패턴 (Extracted patterns)
- Column defaults to nullable — columns without an explicit
NOT NULLallow NULL values by default. [S1] - Filtered table clone —
CREATE TABLE new_table AS SELECT ... FROM existing_table WHERE ...;both creates the schema and populates it from a filtered subset in one step. [S1]
📖 세부 내용 (Details)
- Basic table with a primary key and a required column: [S1]
CREATE TABLE Persons (
PersonID int PRIMARY KEY,
LastName varchar(255) NOT NULL,
FirstName varchar(255),
Address varchar(255),
City varchar(255)
);
- Create-and-populate from an existing table:
CREATE TABLE GermanCustomers AS SELECT * FROM Customers 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 — 생성 직후 INSERT INTO로 데이터를 채우는 것이 자연스러운 다음 단계로 안내된다. [S1]
💻 코드 패턴 (Code patterns)
Basic table definition (SQL):
CREATE TABLE Persons (
PersonID int PRIMARY KEY,
LastName varchar(255) NOT NULL,
FirstName varchar(255),
Address varchar(255),
City varchar(255)
);
✅ 검증 상태 및 신뢰도
- 상태: draft
- 검증 단계: conceptual
- 출처 신뢰도: B (W3Schools — widely used educational reference, not a primary standards body)
- 신뢰 점수: 0.90
- 중복 검사 결과: 신규 생성 (New discovery)
🔗 지식 그래프 (Knowledge Graph)
- 상위/루트: SQL Tutorial
- 관련 개념: SQL Constraints, SQL Insert Into, SQL Data Types, SQL Drop Table
- 참조 맥락: 테이블 생성의 기본 문법 — Constraints/Data Types 챕터와 함께 이해해야 완전해진다.
📚 출처 (Sources)
- [S1] W3Schools — SQL CREATE TABLE Statement — https://www.w3schools.com/sql/sql_create_table.asp
📝 변경 이력 (Change history)
- 2026-07-04: Initial draft synthesized from the W3Schools "SQL CREATE TABLE Statement" page (Astra wiki-curation, P-Reinforce v3.1 format).