---
id: python-mysql-delete
title: "Python MySQL Delete"
category: "Programming_Language"
status: "draft"
verification_status: "conceptual"
canonical_id: ""
aliases: ["파이썬 MySQL 삭제"]
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: ["python", "mysql", "w3schools", "delete", "commit"]
raw_sources: ["https://www.w3schools.com/python/python_mysql_delete.asp"]
applied_in: []
github_commit: ""
---

# [[Python MySQL Delete]]

## 🎯 한 줄 통찰 (One-line insight)
Just like INSERT, a DELETE needs `mydb.commit()` to actually take effect, and omitting the WHERE clause deletes every row — the same two warnings from raw SQL DELETE apply identically through the Python connector. [S1]

## 🧠 핵심 개념 (Core concepts)
- **`DELETE FROM ... WHERE ...`** — deletes matching records. [S1]
- **`mydb.commit()`** — required for the delete to persist. [S1]
- **Missing WHERE = delete everything** — same risk as raw SQL DELETE. [S1]
- **`mycursor.rowcount`** — number of rows deleted. [S1]
- **SQL injection prevention** — use `%s` placeholders for user-provided delete criteria. [S1]

## 📖 세부 내용 (Details)
- Basic delete: `sql = "DELETE FROM customers WHERE address = 'Mountain 21'"; mycursor.execute(sql); mydb.commit(); print(mycursor.rowcount, "record(s) deleted")`. [S1]
- Parameterized delete: `sql = "DELETE FROM customers WHERE address = %s"; adr = ("Yellow Garden 2",); mycursor.execute(sql, adr); mydb.commit()`. [S1]

## ⚖️ 모순 및 업데이트 (Contradictions & updates)
소스에서 모순되는 정보는 발견되지 않음. WHERE 누락 시 전체 삭제된다는 경고가 SQL Delete 챕터와 동일하게 반복됨. [S1]

## 🛠️ 적용 사례 (Applied in summary)
현재 발견된 실제 적용 사례가 없습니다 — SQL Delete 챕터의 규칙(WHERE 필수, commit 필요)이 mysql.connector API로 그대로 이어진다. [S1]

## 💻 코드 패턴 (Code patterns)
Parameterized delete with commit (Python):
```python
sql = "DELETE FROM customers WHERE address = %s"
adr = ("Yellow Garden 2", )
mycursor.execute(sql, adr)
mydb.commit()
print(mycursor.rowcount, "record(s) deleted")
```

## ✅ 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:** [[Python Tutorial]]
- **관련 개념:** [[SQL Delete]], [[Python MySQL Insert]], [[Python MySQL Update]]
- **참조 맥락:** SQL Delete의 위험성(WHERE 누락)이 mysql.connector에서도 동일하게 적용된다.

## 📚 출처 (Sources)
- [S1] W3Schools — Python MySQL Delete From By — https://www.w3schools.com/python/python_mysql_delete.asp

## 📝 변경 이력 (Change history)
- 2026-07-04: Initial draft synthesized from the W3Schools "Python MySQL Delete" page (Astra wiki-curation, P-Reinforce v3.1 format).