如何使用 Python 从 SQLite 表中删除特定行？
原文:https://www . geeksforgeeks . org/如何使用 python 从 sqlite 表中删除特定行/
在本文中，我们将讨论如何使用 Python 从 SQLite 表中删除特定行。
为了从 SQL 中的表中删除特定的行，我们使用 delete 查询，SQL 中的 DELETE 语句用于从表中删除现有的记录。根据我们在 WHERE 子句中指定的条件，我们可以删除一条记录或多条记录。
语法:
从表名中删除
WHERE 条件；
我们将创建一个表，然后在其中执行删除操作。
Python 3
# importing sqlite module
import sqlite3
# create connection to the database
# my_database
connection = sqlite3.connect('my_database.db')
# create table named address of customers
# with 4 columns id,name age and address
connection.execute('''CREATE TABLE ship (ship_id INT, ship_name \
TEXT NOT NULL, ship_destination CHAR(50) NOT NULL); ''')
print("Ship table created successfully")
# close the connection
connection.close()
输出:
Ship table created successfully
例 1:
Python 程序插入数据和删除数据，其中 2 是发货 id。
Python 3
# import sqlite module database
import sqlite3
# create connection to the database
# my_database
connection = sqlite3.connect('my_database.db')
# insert query to insert values
connection.execute("INSERT INTO ship VALUES (1, 'tata-hitachi','noida' )")
connection.execute("INSERT INTO ship VALUES (2, 'tata-mumbai','mumbai' )")
connection.execute("INSERT INTO ship VALUES (3, 'tata-express','hyderabad' )")
# query to display all data in the table
cursor = connection.execute("SELECT * from ship")
print("Actual data")
# display row by row
for row in cursor:
print(row)
# query to delete all data where ship_id = 2
connection.execute("DELETE from ship where ship_id=2")
print("After deleting ship id = 2 row")
# display row by row
cursor = connection.execute("SELECT * from ship")
for row in cursor:
print(row)
# close the connection
connection.close()
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