数据库|mysql教程
Python,进行数据库表变更和查询,Python,MySQL的基础操作
数据库-mysql教程Python连接MySQL，进行数据库表变更和查询：
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python mysql insert delete query：
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#!/usr/bin/python import MySQLdb def doInsert(cursor,db): #insert # Prepare SQL query to INSERT a record into the database. sql = "UPDATE EMPLOYEE SET AGE = AGE+1 WHERE SEX = \%c\" %(M) try:cursor.execute(sql)mit() except:db.rollback() def do_query(cursor,db): sql = "SELECT * FROM EMPLOYEE \WHERE INCOME > \%d\" % (1000) try:# Execute the SQL commandcursor.execute(sql)# Fetch all the rows in a list of lists.results = cursor.fetchall()print esuts,cursor.rowcountfor row in results: fname = row[0] lname = row[1] age = row[2] sex = row[3] income = row[4] # Now print fetched result print "fname=%s,lname=%s,age=%d,sex=%s,income=%d" % \ (fname, lname, age, sex, income ) except:print "Error: unable to fecth data" def do_delete(cursor,db): sql = DELETE FROM EMPLOYEE WHERE AGE > {}.format(20) try:cursor.execute(sql)mit() except:db.rollback() def do_insert(cursor,db,firstname,lastname,age,sex,income): sql = "INSERT INTO EMPLOYEE(FIRST_NAME, \LAST_NAME, AGE, SEX, INCOME) \VALUES (\%s, \%s, \%d, \%c, \%d )" % \(firstname,lastname,age,sex,income) try:cursor.execute(sql)mit() except:db.rollback() # Open database connection # change this to your mysql account #connect(server,username,password,db_name) db = MySQLdb.connect("localhost","root","root","pydb" ) # prepare a cursor object using cursor() method cursor = db.cursor() do_query(cursor,db) doInsert(cursor,db) do_query(cursor,db) do_delete(cursor,db) do_query(cursor,db) do_insert(cursor,db,hunter,xue,22,M,2000) do_insert(cursor,db,mary,yang,22,f,5555) do_insert(cursor,db,zhang,xue,32,M,5000) do_insert(cursor,db,hunter,xue,22,M,333) do_query(cursor,db) # disconnect from server db.close()
之后可以在此基础上根据需要进行封装。
