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O que é CRUD + DELETE com e sem WHERE no SQLite3 do Python

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This commit is contained in:
Luiz Otávio
2023-04-02 08:48:32 -03:00
parent f8eb69afad
commit b0f78cff48
1 changed files with 5 additions and 1 deletions
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6
aula205/main.py
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@@ -9,10 +9,15 @@ TABLE_NAME = 'customers'
connection = sqlite3.connect(DB_FILE) connection = sqlite3.connect(DB_FILE)
cursor = connection.cursor() cursor = connection.cursor()
# CRUD - Create Read Update Delete
# SQL - INSERT SELECT UPDATE DELETE
# CUIDADO: fazendo delete sem where # CUIDADO: fazendo delete sem where
cursor.execute( cursor.execute(
f'DELETE FROM {TABLE_NAME}' f'DELETE FROM {TABLE_NAME}'
) )
# DELETE mais cuidadoso
cursor.execute( cursor.execute(
f'DELETE FROM sqlite_sequence WHERE name="{TABLE_NAME}"' f'DELETE FROM sqlite_sequence WHERE name="{TABLE_NAME}"'
) )
@@ -51,7 +56,6 @@ cursor.executemany(sql, (
{'nome': 'Joana', 'peso': 5}, {'nome': 'Joana', 'peso': 5},
)) ))
connection.commit() connection.commit()
cursor.close() cursor.close()
connection.close() connection.close()