For example, the following definesinsert_many_vendors()function that inserts multiple rows into thevendorstable: definsert_many_vendors(vendor_list):""" Insert multiple vendors into the vendors table """sql="INSERT INTO vendors(vendor_name) VALUES(%s) RETURNING *"config=load_config()try:withpsy...
SELECT*FROMbilling_headders;Code language:SQL (Structured Query Language)(sql) It worked as expected. Inserting multiple rows into the table If you want to insert multiple rows into a table once, you can use theCursor.executemany()method. TheCursor.executemany()is more efficient than calling th...
Inserting multiple rows into a PostgreSQL table example def insert_vendor_list(vendor_list): """ insert multiple vendors into the vendors table """ sql = "INSERT INTO vendors(vendor_name) VALUES(%s)" conn = None try: # read database configuration params = config() # connect to the Postg...
) dbh= MySQLdb.connect (host="localhost" , user ="root" , passwd="test" , db="test") print("connection successed") cur =dbh.cursor() query="insert into test values (%s,%s)" for id in rows: cur.execute(query,i) dbh.commit() dbh.close() 3、一次接收返回的多条数据 #!/usr/bin...
# Fastest way to INSERT multiple rows. MyModel.insert_many(data_source).execute() 1. 2. 3. 4. 5. 6. 7. 8. insert_many()方法还接收多行元组,同时需要提供一个对应的字段。 # We can INSERT tuples as well... data = [('val1-1', 'val1-2'), ...
{SQL Server};SERVER='+server+';DATABASE='+database+';UID='+username+';PWD='+ password) cursor = cnxn.cursor()# select 26 rows from SQL table to insert in dataframe.query ="SELECT [CountryRegionCode], [Name] FROM Person.CountryRegion;"df = pd.read_sql(query, cnxn) print(df.head...
customer_data = pd.read_sql(input_query, conn_str) 现在显示数据帧的开头,验证其是否正确。 Python复制 print("Data frame:", customer_data.head(n=5)) results复制 Rows Read: 37336, Total Rows Processed: 37336, Total Chunk Time: 0.172 seconds ...
importsqlite3# 连接到SQLite数据库conn=sqlite3.connect('example.db')c=conn.cursor()# 执行更新操作c.execute("UPDATE users SET age = 30 WHERE name = 'Alice'")# 提交更改conn.commit()# 获取受影响的行数rows_affected=c.rowcountprint(f"受影响的行数:{rows_affected}")# 关闭数据库连接conn.clos...
Basic SQL Commands Create a table Insert information Select information Update information Delete information 1.2 SELECT statement 1.Retrieving rows from a table SELECT statement: A Data Manipulation Language(DML)statement used to read and modify data ...
rows = [ (1, "First" ), (2, "Second" ), (3, "Third" ), (4, "Fourth" ), (5, "Fifth" ), (6, "Sixth" ), (7, "Seventh" ) ] cur = con.cursor() cur.bindarraysize = 7 cur.setinputsizes(int, 20) cur.executemany("insert into mytab(id, data) values (:1, :2)",...