---
id: sql-create-table
title: "SQL Create Table"
category: "Database"
status: "draft"
verification_status: "conceptual"
canonical_id: ""
aliases: ["SQL CREATE TABLE Statement", "CREATE TABLE", "SQL 테이블 생성"]
duplicate_of: ""
source_trust_level: "B"
confidence_score: 0.9
created_at: 2026-07-04
updated_at: 2026-07-04
review_reason: ""
merge_history: []
tags: ["sql", "database", "w3schools", "createtable"]
raw_sources: ["https://www.w3schools.com/sql/sql_create_table.asp"]
applied_in: []
github_commit: ""
---

# [[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 NULL` allow 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]
```sql
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):
```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).