python: read mysql

sql:

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create database geovindu;   use geovindu;   drop table BookKindList; #书目录 create table BookKindList (     BookKindID INT NOT NULL AUTO_INCREMENT, #自动增加     BookKindName nvarchar(500) not null,     BookKindParent int null,    PRIMARY KEY(BookKindID)  #主键 );   insert into BookKindList(BookKindName,BookKindParent) values("六福书目录",0);     #删除 DELIMITER $$ DROP PROCEDURE IF EXISTS `geovindu`.`DeleteBookKind` $$ CREATE PROCEDURE `geovindu`.`DeleteBookKind` (IN param1 INT) BEGIN          Delete From bookkindlist WHERE BookKindID = param1; END $$ DELIMITER ;    delete from bookkindlist WHERE BookKindID =10;       SELECT * FROM bookkindlist;        execute DeleteBookKind(10)；             #查询所有 DELIMITER $$ DROP PROCEDURE IF EXISTS `geovindu`.`proc_Select_BookKindListAll` $$ CREATE PROCEDURE `geovindu`.`proc_Select_BookKindListAll` () BEGIN     SELECT * FROM bookkindlist; END $$ DELIMITER ;      DROP PROCEDURE proc_Select_BookKindListAll;             select * from  `geovindu`.`bookkindlist`; SELECT * FROM bookkindlist;     #统计 DELIMITER $$ DROP PROCEDURE IF EXISTS `geovindu`.`BookKindCount` $$ CREATE PROCEDURE `geovindu`.`BookKindCount` (OUT param1ID INT) BEGIN         select COUNT(*) into param1ID  From bookkindlist; END $$ DELIMITER ;     #更新 DELIMITER $$ DROP PROCEDURE IF EXISTS `geovindu`.`proc_Update_BookKindList` $$ CREATE PROCEDURE `geovindu`.`proc_Update_BookKindList` (IN param1ID Int,IN param1Name NVarChar(1000),IN param1Parent Int) BEGIN IF NOT EXISTS (SELECT * FROM BookKindList WHERE BookKindName=param1Name) then #如果存在相同的记录，不更新名称 UPDATE BookKindList     SET         BookKindName=param1Name ,         BookKindParent=param1Parent     where         BookKindID=param1ID; ELSE     UPDATE BookKindList     SET BookKindParent=param1Parent     where         BookKindID=param1ID; END IF; END $$ DELIMITER ;         #查询一条 DELIMITER $$ DROP PROCEDURE IF EXISTS `geovindu`.`proc_Select_BookKindList` $$ CREATE PROCEDURE `geovindu`.`proc_Select_BookKindList` (IN param1 INT) BEGIN         SELECT * FROM BookKindList WHERE BookKindID = param1; END $$ DELIMITER ;     #插入一条 DELIMITER $$ DROP PROCEDURE IF EXISTS `geovindu`.`proc_Insert_BookKindList` $$ CREATE PROCEDURE `geovindu`.`proc_Insert_BookKindList` (IN param1Name NVarChar(1000),IN param1Parent Int) BEGIN         insert into BookKindList(BookKindName,BookKindParent) values(param1Name,param1Parent); END $$ DELIMITER ;     #插入一条返回值 DELIMITER $$ DROP PROCEDURE IF EXISTS `geovindu`.`proc_Insert_BookKindOut` $$ CREATE PROCEDURE `geovindu`.`proc_Insert_BookKindOut` (IN param1Name NVarChar(1000),IN param1Parent Int,OUT ID INT) BEGIN      IF NOT EXISTS (SELECT * FROM BookKindList WHERE BookKindName=param1Name) then   #如果存在相同的记录，不添加         INSERT INTO BookKindList (BookKindName,BookKindParent)VALUES(param1Name ,param1Parent);         #set ID=Last_insert_id()         SELECT LAST_INSERT_ID() into ID;       end if; END $$ DELIMITER ;

　　

 

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""" bookkind.py  书目录类 读取excel文件数据 date 2023-06-15 edit: Geovin Du,geovindu, 涂聚文 ide: PyCharm 2023.1 python 11   """   import sys import os   class BookKindList(object):       def __init__(self, BookKindID, BookKindName, BookKindParent):         """         书目录类  构造函数         :param  BookKindID:  自增ID         :param  BookKindName:  书目录名         :param  BookKindParent:  父ID         """         self.__BookKindID = BookKindID         self.__BookKindName = BookKindName         self.__BookKindParent = BookKindParent         def getBookKindID(self):         """         得到自增ID         :return:  返回自增ID         """         return self.__BookKindID         def setBookKindID(self, BookKindID):         """         自增ID         :param  BookKindID:  ID         :return:  none         """         self.__BookKindID = BookKindID         def getBookKindName(self):         """         获取书目录名         :return:  返回书类目名         """         return self.__BookKindName         def setBookKindName(self, BookKindName):         """         设置书目录名         :param  BookKindName:  书类名         :return:  none         """         self.__BookKindName = BookKindName         def getBookKindParent(self):         """         获取父ID         :return:  返回月份         """         return self.__BookKindParent         def setBookKindParent(self, BookKindParent):         """         设置父ID         :param  BookKindParent:  输入父ID         :return:  none         """         self.__BookKindParent = BookKindParent         def __str__(self):         return f"BookKindID:  {self.__BookKindID},  BookKindName:  {self.__BookKindName},  BookKindParent:  {self.__BookKindParent}"         """ MySQLDAL.py 读取MySQL数据 date 2023-06-15 edit: Geovin Du,geovindu, 涂聚文 ide: PyCharm 2023.1 python 11 参考： https://www.mssqltips.com/sqlservertip/6694/crud-operations-in-sql-server-using-python/ https://learn.microsoft.com/zh-cn/sql/connect/python/pymssql/step-3-proof-of-concept-connecting-to-sql-using-pymssql?view=sql-server-ver16 https://docs.sqlalchemy.org/en/20/tutorial/data_update.html https://datatofish.com/update-records-sql-server/ https://www.dev2qa.com/how-to-use-python-to-insert-delete-update-query-data-in-sqlite-db-table/ https://kontext.tech/article/893/call-sql-server-procedure-in-python https://learn.microsoft.com/en-us/sql/connect/python/pymssql/python-sql-driver-pymssql?view=sql-server-ver16 https://pythontic.com/database/mysql/stored_procedure https://github.com/pymssql/pymssql/blob/master/tests/test_connections.py https://pynative.com/python-mysql-execute-stored-procedure/   """   import sys import os import pymssql import pymysql import pyodbc import BookKind   class sqlDAL(object):       def mysqlconnect():         """         连接MySQL 检测其版本         """         # To connect MySQL database         conn = pymysql.connect(             host='localhost',             user='root',             password="geovindu",             db='geovindu',         )           cur = conn.cursor()         cur.execute("select @@version")         output = cur.fetchall()         print(output)           # To close the connection         cur.close()         conn.close()       def connectDB(self, host, user, psw, db_name, charset='utf8'):         self.db = pymysql.connect(host=host, user=user, password=psw, db=db_name, charset=charset)         def execSql(self, sql):         """         执行SQL语句         :param sql: SQL 语句         :return:         """         # sql is insert, delete or update statement         cursor = self.db.cursor()         try:             cursor.execute(sql)             # commit sql to mysql             self.db.commit()             cursor.close()             return True         except:             self.db.rollback()         return False         def select():         """         查询         """         # To connect MySQL database         conn = pymysql.connect(             host='localhost',             user='root',             password="geovindu",             db='geovindu',         )           cursor = conn.cursor()         cursor.callproc('proc_Select_BookKindListAll')         # print results         print("Printing laptop details")         #for result in cursor.stored_results():             #print(result.fetchall())         rows = cursor.fetchall()         for row in rows:             print(f'{row[0]} {row[1]} {row[2]}')         # To close the connection         cursor.close()         conn.close()         def selectdu():         """         查询         """         # To connect MySQL database         conn = pymysql.connect(             host='localhost',             user='root',             password="geovindu",             db='geovindu',         )           cursor = conn.cursor()         cursor.callproc('proc_Select_BookKindListAll')         # print results         print("Printing laptop details")         #for result in cursor.stored_results():         details =cursor.fetchall()#cursor.stored_results()#result.fetchall()         for det in details:             print(det)         # To close the connection         cursor.close()         conn.close()         def Add(objdu):         """         添加         :param objdu: 书目录类         :return:         """         # To connect MySQL database         conn = pymysql.connect(              host='localhost',              user='root',              password="geovindu",              db='geovindu',         )         #print(type(objdu.getBookKindName()),objdu.getBookKindParent())         cursor = conn.cursor() #prepared=True         args=(objdu.getBookKindName(), objdu.getBookKindParent())         cursor.callproc('proc_Insert_BookKindList', args)         conn.commit()         # print results         print("Printing laptop details")         #for result in cursor.stored_results():             #print(result.fetchall())             # To close the connection         cursor.close()         conn.close()       def Addstr(BookKindID, BookKindName, BookKindParent):         """         添加         :param BookKindName:         :param BookKindParent:         :return:         """         # To connect MySQL database         conn = pymysql.connect(              host='localhost',              user='root',              password="geovindu",              db='geovindu',         )           cursor = conn.cursor()#prepared=True         args = (BookKindName, BookKindParent)         cursor.callproc('proc_Insert_BookKindList', args)         conn.commit()         # print results         print("Printing laptop details")         #for result in cursor.stored_results():             #print(result.fetchall())             # To close the connection         cursor.close()         conn.close()

　　

 

调用：

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import MySQLDAL import BookKind     MySQLDAL.sqlDAL.mysqlconnect()     #MySQLDAL.sqlDAL.Addstr(0,"文学",1)     tu.append(BookKind.BookKindList(0,"科学",1))       MySQLDAL.sqlDAL.Add(BookKind.BookKindList(0,"科学",1))     MySQLDAL.sqlDAL.select()     MySQLDAL.sqlDAL.selectdu()

　　

 输出：

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(('8.0.32',),) <class 'str'> 1 Printing laptop details Printing laptop details 1 六福书目录 0 6 文学 1 7 科学 1 Printing laptop details (1, '六福书目录', 0) (6, '文学', 1) (7, '科学', 1)