如何使用Python更新、插入和删除Redshift数据库？

import psycopg2

# 建立与Redshift数据库的连接
conn = psycopg2.connect(host='redshift_host', port=5439, database='database_name', user='user', password='password')

# 创建游标对象
cur = conn.cursor()

# 执行更新操作的SQL语句
update_sql = "UPDATE table_name SET column1 = value1 WHERE condition"
cur.execute(update_sql)

# 提交事务
conn.commit()

# 关闭游标和连接
cur.close()
conn.close()

import psycopg2

# 建立与Redshift数据库的连接
conn = psycopg2.connect(host='redshift_host', port=5439, database='database_name', user='user', password='password')

# 创建游标对象
cur = conn.cursor()

# 执行插入操作的SQL语句
insert_sql = "INSERT INTO table_name (column1, column2) VALUES (value1, value2)"
cur.execute(insert_sql)

# 提交事务
conn.commit()

# 关闭游标和连接
cur.close()
conn.close()

import psycopg2

# 建立与Redshift数据库的连接
conn = psycopg2.connect(host='redshift_host', port=5439, database='database_name', user='user', password='password')

# 创建游标对象
cur = conn.cursor()

# 执行删除操作的SQL语句
delete_sql = "DELETE FROM table_name WHERE condition"
cur.execute(delete_sql)

# 提交事务
conn.commit()

# 关闭游标和连接
cur.close()
conn.close()