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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
SQL CREATE TABLE Statement
CREATE TABLE
SQL 테이블 생성
B 0.9 2026-07-04 2026-07-04
sql
database
w3schools
createtable
https://www.w3schools.com/sql/sql_create_table.asp

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]
  • SyntaxCREATE 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 cloneCREATE 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)

📚 출처 (Sources)

📝 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).