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2017-08-29 19:21:29 有 1,585 人看過有 11 人喜歡

เทคนิคการเขียนชุดคำสั่ง SELECT ที่ให้ผู้ใช้ผ่านพารามิเตอร์โดยใช้เครื่องหมายคำถาม เพื่อให้ผู้ใช้กำหนดเงื่อนไขในการค้นหาข้อมูล
การออกแบบฟังก์ชันเพื่อทำงานชุดคำสั่ง SQL ที่ส่งค่ากลับมาเป็น cursor
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สอนการใช้งาน Excel, VBA, Macro, Word, PowerPoint, SQL, การเขียนโปรแกรมด้วยภาษาต่าง ๆ Python, PHP, Java, C, C# พร้อมตัวอย่างการประยุกต์ การทำเหมืองข้อมูล Data mining, Machine learning การใช้โปรแกรม R, ggplot2 สื่อการสอนโดย รศ.ดร. ประเสริฐ คณาวัฒนไชย คณะพาณิชศาสตร์และการบัญชี จุฬาลงกรณ์มหาวิทยาลัย Assoc.Prof. Dr. Prasert Kanawattanachai Chulalongkorn Business School

pyodbc mysql 在 prasertcbs Youtube 的最讚貼文

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2017-08-28 19:57:58 有 1,495 人看過有 11 人喜歡

เนื้อหาในคลิปนี้จะสอนถึง
1) เทคนิคในการผ่านพารามิเตอร์ให้กับคำสั่ง INSERT, UPDATE, DELETE
2) เทคนิคการเพิ่มข้อมูลหลาย ๆ แถวพร้อม ๆ กัน
=== ดาวน์โหลดไฟล์ตัวอย่างได้ที่ https://goo.gl/sI3SY2

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► สอน Python https://www.youtube.com/playlist?list=PLoTScYm9O0GH4YQs9t4tf2RIYolHt_YwW
► สอน Python OOP https://www.youtube.com/playlist?list=PLoTScYm9O0GEIZzlTKPUiOqkewkWmwadW
► สอน Python GUI https://www.youtube.com/playlist?list=PLoTScYm9O0GFB1Y3cCmb9aPD5xRB1T11y
► สอน Microsoft SQL Server https://www.youtube.com/playlist?list=PLoTScYm9O0GH8gYuxpp-jqu5Blc7KbQVn
► สอน MySQL https://www.youtube.com/playlist?list=PLoTScYm9O0GFmJDsZipFCrY6L-0RrBYLT
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2017-08-27 20:28:34 有 12,895 人看過有 116 人喜歡

เนื้อหาในตอนนี้เริ่มต้นจาก
1) การติดตั้งและใช้ pyodbc package เพื่อใช้ในการติดต่อกับฐานข้อมูลผ่าน ODBC (pip install pyodbc)
2) การติดตั้ง MySQL ODBC driver for Windows (ดาวน์โหลดได้ที่ https://dev.mysql.com/downloads/connector/odbc/)
3) ขั้นตอนการสร้าง connection string เพื่อเชื่อมต่อกับฐานข้อมูล MySQL
4) การสร้างตารางในฐานข้อมูล (CREATE TABLE)
5) การเพิ่มข้อมูลเข้าไปในตาราง (INSERT)
6) การเรียกใช้ข้อมูล (SELECT)

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► สอน Python https://www.youtube.com/playlist?list=PLoTScYm9O0GH4YQs9t4tf2RIYolHt_YwW
► สอน Python OOP https://www.youtube.com/playlist?list=PLoTScYm9O0GEIZzlTKPUiOqkewkWmwadW
► สอน Python GUI https://www.youtube.com/playlist?list=PLoTScYm9O0GFB1Y3cCmb9aPD5xRB1T11y
► สอน Microsoft SQL Server https://www.youtube.com/playlist?list=PLoTScYm9O0GH8gYuxpp-jqu5Blc7KbQVn
► สอน MySQL https://www.youtube.com/playlist?list=PLoTScYm9O0GFmJDsZipFCrY6L-0RrBYLT
► สอน PostgreSQL https://www.youtube.com/playlist?list=PLoTScYm9O0GGi_NqmIu43B-PsxA0wtnyH
► สอน SQLite https://www.youtube.com/playlist?list=PLoTScYm9O0GHjYJA4pfG38M5BcrWKf5s2
► การเชื่อมต่อกับฐานข้อมูล (SQL Server, MySQL, PostgreSQL, SQLite) ด้วย Python ► https://www.youtube.com/playlist?list=PLoTScYm9O0GEdZtHwU3t9k3dBAlxYoq59
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pyodbc mysql 在 [問題] 從資料庫讀取中文亂碼及空值如何進資料庫- 看板Python 的推薦與評價

作者wanget ()

看板Python

標題[問題] 從資料庫讀取中文亂碼及空值如何進資料庫

時間Sat May 12 01:36:14 2018

最近想要把csv檔或是網路上的檔案連結直接寫進資料庫，感覺終於到了最後一步卻翻遍
了google都解決不了問題

環境是pythob 3.6.1 ,anaconda 4.4.0
我在jupyter notebook下執行，使用pyodbc連接MySQL
資料來源是網址或是csv檔，我比較習慣用pandas來處理資料

這是我連接資料庫的方法
cn = pyodbc.connect("DRIVER={MySQL ODBC 8.0 ANSI Driver}; SERVER=localhost;
PORT=3306;DATABASE=db; UID=root; PASSWORD=0000;OPTION=3;CHARSET=UTF8;")
cn.setencoding(encoding='utf-8') 這行也不需要了
[解決方法]:
DRIVER 需選擇 Unicode 的版本，從Python連接資料庫取出資料才不會變成亂碼

我不太確定在.connect下放CHARSET=UTF8; 和設定.setencoding(encoding='utf-8')有什
麼不一樣，但是只要少放一個，在insert into時如果有中文，jupyter notebook就會卡
住，都要shutdown kernel再重開才能繼續

現在有個問題就是我可以順利的新增含有中文的資料到資料庫了，而且在MySQL中select
出來是中文，但是到了python就會變成亂碼，請問我該怎麼解決?

還有個問題就是，我的資料裡面有空值，我寫了個迴圈配合 .format，讓他逐行新增資
料，但是空值讀出來是nan，沒辦法新增

如果是數字欄位的話，我可以把nan轉成NULL，新增進MySQL就可以是空的，但是如果是文
字的欄位，新增的時候會變成'NULL'而不是空值了

因為我用這樣的形式新增資料
for i in df1.index:
cursor.execute("insert into taichung_201711 values('{}', {});" \
.format(df1.loc[i][6], df1.loc[i][7]))

如果是字串的欄位，一開始就給他''了，要是把NaN改成NULL，就會變成'NULL'進資料庫
有方法可以直接把空值存進MySQL嗎?
這裡我還是把空值都轉成 'NULL'進資料庫，之後調資料出來再轉回nan，
目前都用DataFrame處理資料還沒發生問題

懇請各位大大指教了

--

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→ uranusjr: 聽起來你 MySQL 本身的編碼就沒設對 05/12 09:36

→ wanget: MySQL編碼是 utf8md4 應該沒有問題 05/12 13:54

→ wanget:

05/12 13:54

→ wanget: 還是要改成utf8呢? 05/12 13:55

→ wanget: 今天發現了新問題，MySQL中只是看起來是中文，但要查詢時 05/13 15:52

→ wanget: 卻查不出來 05/13 15:52

→ wanget: 又來更新問題: MySQL可以正常查詢我之前搞錯了 05/13 21:26

→ uranusjr: 實在不太熟 ODBC 不確定問題在哪, 不過直覺還是覺得和資 05/13 22:10

→ uranusjr: 料庫設定有關, 可能要確定你的 table 真的是用 UTF-8 建 05/13 22:10

→ uranusjr: 不過 utf8md4 是正確的沒錯, 千萬不要用 utf8 05/13 22:10

→ wanget: 再次附上查出來的編碼和測試

05/13 23:00

→ wanget: 開頭都是utf8但後面不太一樣，可是不管哪種在python都是 05/13 23:02

→ wanget: 亂碼，我這次是在MySQL中建表順便設定collation 05/13 23:02

→ uranusjr: 你查的是資料庫的預設編碼, 和表的不見得一樣, 不過聽你 05/14 16:25

→ uranusjr: 的測試法應該是有建新表, 那麼應該是用這些沒錯 (希望) 05/14 16:25

→ uranusjr: 這樣最可能的兩個問題就是 1. 進去的編碼不對 2. 讀出來 05/14 16:27

→ uranusjr: 後印到螢幕上的結果不對; 你需要想辦法用 binary 把資料 05/14 16:27

→ uranusjr: 庫裡的值印出來, 比對它是不是真的是正確的編碼結果 05/14 16:28

→ wanget:

show table status;查出來的 05/15 16:52

→ wanget: 應該是表的編碼嗎? 從MySQL新增資料查詢都沒問題，到了py 05/15 16:53

→ wanget: thon才有問題，問題會是出在連線嗎? 我換個套件測試看看 05/15 16:54

→ wanget: 進去的編碼不對，和用binary把值印出來我google還是不會 05/15 16:55

→ wanget: 解決。不過還是謝謝uranusjr大大的回覆 05/15 16:55

→ wanget: 我把中文欄位拿出來.encode('utf8') 發現他是bytes的形式 05/15 20:53

→ wanget: 我改用pymysql連接資料庫後，可以正常的顯示中文了！我 05/16 00:01

→ wanget: 想可能是pyodbc的問題 05/16 00:01

※ 編輯: wanget (111.242.1.76), 05/23/2018 16:04:24

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PostgreSQL; MySQL; Oracle; Microsoft SQL Server; SQLite; Others ... pyodbc engine = create_engine("mssql+pyodbc://scott:tiger@mydsn") # pymssql engine ...

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If you want to avoid dependencies, use MySQL Connector/Python or PyMySQL. For SQL Server: with Django use django-mssql-backend, and with SQLAlchemy use pyodbc, ...

#35. python中使用sql select如何抓取資料同時抓取欄位名稱

python中使用sql select如何抓取資料同時抓取欄位名稱. python. sql. mysql. qwqw0330. 4 年前‧ 17832 瀏覽. 檢舉. 0. 再寫python時使用sql. SELECT * FROM TABLE_NAME

#36. How to use the pyodbc.connect function in pyodbc - Snyk

def test_odbc(self): try: import pyodbc except ImportError: return conn = pyodbc.connect( 'Driver={MySQL};Server=127.0.0.1;Port=3306 ...

#37. Python Extension Packages for Windows - Christoph Gohlke

... pendulum; openbabel; ode; obspy; lp_solve; pyodbc; backports.zoneinfo; blist; aspell-python ... delny; mysql-python; htseq; pyusb-ftdi ...

#38. pyodbc - ConnectionStrings.wiki - Google Code

Pass the socket path in the connection string: cnxn = pyodbc.connect('DRIVER={MySQL};DATABASE=test;SOCKET=/var/lib/mysql/mysql.sock') ...

#39. [問題] 從資料庫讀取中文亂碼及空值如何進資料庫- 看板Python

... 是pythob 3.6.1 ,anaconda 4.4.0 我在jupyter notebook下執行，使用pyodbc連接MySQL 資料來源是網址或是csv檔，我比較習慣用pandas來處理資料.

#40. How to Convert MySQL Table to Pandas DataFrame / Python ...

pyodbc in order to connect to MySQL database, read table and convert it to DataFrame or Python dict.

#41. pyodbc怎么连接数据库mysql - 百度知道

Java要连接数据库，那么首先你必须安装mysql数据库。安装好mysql之后，安装JDK了。安装好JDK之后，就是安装Eclipse了，要支持JDK版本，Eclipse安装的时候会自动去 ...

#42. pyodbc 操作SQL Server資料庫 - 每日頭條

pyodbc 是Python包，使用ODBC驅動器來連接SQL Server資料庫，pyodbc的基本 ... 追尋介紹mysqldb是python操作mysql資料庫的一個庫．mysql的幾乎所有的 ...

#43. Data Source Connection Strings - GitHub Pages

More examples of connection strings are available in pyodbc documentation. ... Microsoft SQL Server; MySQL; Oracle; PostgreSQL; Snowflake; SQLite; Teradata ...

#44. MySQL Connector/Python 和pyodbc - andy_0212 - 博客园

import pyodbc conn_mysql = pyodbc.connect('DRIVER={MySQL ODBC 8.0 Unicode Driver};SERVER=' + server_mysql + ';DATABASE='+database_mysql + ' ...

#45. python连接mysql，teradata，DB2数据库 - 知乎专栏

python连接mysql; python连接teradata; python连接DB2; 使用pyodbc. 本篇文章适用于Windows系统离线安装参考，有网的情况下线直接`pip install xxx`。

#46. Python使用pyodbc访问数据库操作方法详解 - 脚本之家

这篇文章主要介绍了Python使用pyodbc访问数据库操作方法,结合实例形式详细 ... 更多关于Python相关内容感兴趣的读者可查看本站专题：《Python+MySQL ...

#47. How to Export SQL Server Table to CSV using Python

Step 1: Install the Pyodbc Package. If you haven't already done so, install the pyodbc package using the command below (under Windows): pip install pyodbc. You ...

#48. python实用模块之pyodbc - 博客

pyodbc 是一个非盈利性的组织开发的python模块，这使得python能够具有访问 ... 需要安装mysql odbc：http://dev.mysql.com/downloads/connector/odbc/

#49. 通过ODBC连接MySQL数据库（odbc连接mysql）

接下来，我们就可以使用ODBC连接MySQL数据库了。下面我们以Python语言为例，使用MySQLdb包进行ODBC连接：. “`python. # 导入pyodbc包. import pyodbc.

#50. Access & Use SQL Database with pyodbc in Python

These DBMS (Database management Systems) are compliant with ODBC. MySQL; MS Access; IBM Db2; Oracle; MS SQL Server. I am presently working on MS ...

#51. MySQL - Powering Research @ Wharton - Research-IT

MySQL is a flexible, widely used database server. ... You'll need to install the pyodbc package. ... import pyodbc #create a mySQL connection cnx ...

#52. Connecting to Databases in Python with Pyodbc and Pypyodbc

Pyodbc works with different databases such as Microsoft SQL Server, Oracle, PostgreSQL, MySQL, and others. Pyodbc uses ODBC drivers to connect to different ...

#53. how to use pyODBC to connect to MySql ,please give me a ...

configuring the host, database name, etc.) {If you aren't on Windows, you should normally be able to bypass the MySQL ODBC connector and go directly to the ...

#54. Python to MariaDB Connector

We previously blogged about using Python to connect to MariaDB servers using the MySQL Python package. In June 2020, MariaDB made the first ...

#55. MySQL - 《SQLAlchemy 1.3 Documentation》 - 书栈网

pyodbc. DBAPI; Connecting ... SQLAlchemy supports MySQL starting with version 4.1 through modern releases.However, no heroic measures are ...

#56. Convert A SQL Query Result To A List In Python | MySQL

Python Environment Connect to MySQL. You should be familiar with creating and connecting to a MySQL database. Here is some quick sample code to ...

#57. Get the id after INSERT into MySQL database using Python

Thus, it generates a connection between the programming language and MySQL Server. INSERT Clause in SQL. As the name suggests, it inserts data ...

#58. Python SQL Server Integration using Pyodbc : 5 easy steps

Read 5 easy steps to connect Python to SQL Server using Pyodbc. ... integrations with any platforms such as MS Access, MySQL, IBM Db2, etc.

#59. "Fossies" - the Fresh Open Source Software Archive

Member "mysql-workbench-community-8.0.33-src/plugins/migration/frontend/ ... You need pyodbc 2.1.8 or newer for migrations from RDBMSes other than MySQL.

#60. Need to migrate SQL Server to MySQL - DBA Stack Exchange

from etlalchemy import ETLAlchemySource, ETLAlchemyTarget mssql_db_source = ETLAlchemySource("mssql+pyodbc://username:password@DSN") mysql_db_target ...

#61. How setup a DSN for pyodbc. - cPanel Forums

I would like to install ODBC driver from Oracle MySql page (MySQL :: Download Connector/ODBC) but I don't know if cPanel or WHM can help me. Any ...

#62. pandas.DataFrame.to_sql — pandas 2.0.3 documentation

Write records stored in a DataFrame to a SQL database. Databases supported by SQLAlchemy [1] are supported. Tables can be newly created, appended to, or ...

#63. Python MySQL Execute Parameterized Query using Prepared ...

This article demonstrates how to use a Python Parameterized query or Prepared Statement to perform MySQL database operations.

#64. How to close an SQL connection in Python - Quora

import pyodbc. conn = pyodbc.connect('DRIVER=MySQL ODBC 5.1 driver;SERVER=localhost;DATABASE=spt;UID=who;PWD=testest'). csr = conn.cursor(). csr.close().

#65. Preventing SQL Injection Attacks With Python

... but the results can be reproduced in other database management systems (such as SQLite, MySQL, Microsoft SQL Server, Oracle, and so on).

#66. MYSQL database or SQL Server database - Online Service

Here's an example in Python using the pyodbc library to access a SQL Server database. First, you'll need to install the pyodbc library by running pip install ...

#67. Guide to accessing MS SQL Server and MySQL server on Mac ...

I will outline the instructions for setting up MySQL and freeTDS (MS-SQL) drivers for use with RODBC and pyodbc through iODBC.

#68. How to Use SQL in Python | Built In

The next module, Pyodbc, can be used for remote connections, allowing you to connect to MS-SQL, Oracle and MySQL databases.

#69. PythonでODBC接続を行えるpyodbcをインストールする

またpyodbcはSQL Server以外のデータソースへもODBCドライバを用意し設定 ... the unixODBC package [MySQL] Description = ODBC for MySQL Driver ...

#70. Connecting to and querying SQL Server with Python - Blog - Hex

Installing the pyodbc library to connect to SQL Server ... you can also use it with MySQL, PostgreSQL, and a ton of other databases.

#71. SQL Insert Tutorial — Inserting Records into a Database

Master the art of the SQL Insert to add and update data in SQL and MySQL databases using SQL queries, as well as from within Python and ...

#72. pyodbc module - Raspberry Pi Forums

But I also see a `python-pyodbc` package in aptitude‽ ... has anybody a test routine for raspberry pi to test a pyodbc connection to mysql?

#73. API Quirks: SQLAlchemy, MSSQL, and plus sign encoding

... connections to things like MySQL, MSSQL, PostgreSQL, and others. ... Here is the proper, working code to generate a mssql+pyodbc ...

#74. How to insert date object in MySQL using Python - Tutorialspoint

To insert a date in a MySQL database, you need to have a column of Type date or datetime in your table. Once you have that, you'll need to ...

#75. Python SQL Server Connection - eduCBA

The python application connects to the MySQL database using the MySQL ... to the python SQL server, we first need to install pyodbc, python, ...

#76. Shiny for Python: How to Work With MySQL and Postgres ...

Learn how to access MySQL and Postgres in this Shiny for Python ... Oracle uses Python's cx-Oracle package, and Microsoft uses pyodbc .

#77. How to Connect to Cloud SQL using Python … the easy way!

... a Python package that makes connecting to Cloud SQL both easy and secure for all three supported database engines (Postgres, MySQL, ...

#78. Optimizacion de Insecion de Datos a una Base SQL con Python

MySQL -python : está escrito en C - mysql-connector-python : está ... pyodbc es un módulo de Python de código abierto que simplifica el ...

#79. [newbie] MySQL : How to check if no row returned?

Jane> I browsed through the archives of this site, but I didn't see how > Jane> to check if a SELECT through the MySql module returns an ...

#80. Python自动化测试实战 - Google 圖書結果

3.20.3 连接MySQL数据库设置(一)本小节演示Robot Framework使用Pyodbc驱动访问数据库的操作方法。 1.安装Pyodbc 安装Pyodbc包,推荐使用pip命令在线安装。

#81. MySQL + ODBC + Python - Code Refinery

How to connect Python programs to a MySQL database using ODBC on Ubuntu 10.04 LTS ... cn = pyodbc.connect('DRIVER={MySQL};SERVER=localhost ...

#82. pyodbc, DSN, mysql/connector needs Help! - CentOS Forums

pyodbc.connect('DRIVER={MySQL};SERVER=localhost;DATABASE=database_name;UID=admin;PWD=password;'). But this generate an error: pyodbc.

#83. 5 Key Database Modules added into ActivePython - ActiveState

... provides key Python database modules, including MySQL, Oracle and ... modules: mysql-python, psycopg2, cx_Oracle, pyodbc, and pymssql.

#84. How to Connect to SQL Server database using Python, pyodbc

The MySQL database is one of the well know database engine, which uses a client-server architecture. The server, mysqld is the program that ...

#85. The Absolute Beginner’s Guide to Learn Python GUI with MySQL ...

try: """ Connect to SQL SERVER Database""" db_config = read_db_configuration() conn = pyodbc.connect(**db_config) curr if conn is not None: = conn.cursor() ...

#86. Linux下通過python訪問MySQL、Oracle、SQL Server資料庫的 ...

... 和配置，用來實現在Linux平臺下通過python訪問MySQL、Oracle、SQL Server資料庫。其中包括以下幾個軟體的安裝及配置： unixODBC FreeTDS pyodbc

#87. Linux下通过python访问MySQL、Oracle、SQL Server数据库

... 和配置，用来实现在Linux平台下通过python访问MySQL、Oracle、SQL Server数据库。其中包括以下几个软件的安装及配置： unixODBC FreeTDS pyodbc

#88. [Python] pyodbc 連線Sql Server - Holey Blog

安裝對應版本之 pyodbc。 · 以下Code 將操作如何從以下參數中的Server 中取得資料 (1) Server IP Address = 192.168.0.1:1433 (2) Database Name = ...

#89. 使用Python 和Pyodbc 連線到Microsoft SQL Server - Delft Stack

Microsoft SQL Server 是一個關聯式資料庫管理系統或簡稱RDBMS。顧名思義，它是由微軟開發的，是用 C/C++ 編寫的。它是一種工具，可讓其使用者使用 ...

#90. ConnectionStrings.com - Forgot that connection string? Get it ...

All connection strings in one place. Find the syntax for your database connection using ADO.NET, ADO, ODBC, OLEDB, C#, VB, VB.NET, ASP.NET and more.

#91. SQLAlchemy - PyPI

Introduction. SQLAlchemy is the Python SQL toolkit and Object Relational Mapper that gives application developers the full power and flexibility of SQL.

#92. Python Data Persistence - Google 圖書結果

The pyodbc module enables access to any RDBMS for which the respective ODBC driver ... Most of the established relational database products (Oracle, MySQL, ...

#93. SQL Pocket Guide - Google 圖書結果

RDBMS Option Code SQL Server pip pip install pyodbc conda conda install -c ... conn = sqlite3.connect('my_new_db.db') MySQL import mysql.connector conn ...

#94. The Definitive Guide to Pylons - 第 134 頁 - Google 圖書結果

... psycopg2 MySQL http://mysql.org MySQLdb module packaged as mysql-python ... Microsoft SQL Server http://microsoft.com/sql/ pyodbc (recommended), ...

#95. Python网络编程从入门到精通 - Google 圖書結果

pypyodbc和pyodbc,二者没什么区别,pypyodbc是pyodbc 的纯Python实现,平台移植性更好。 ... cx_Oracle模块连接代码: 3.2 PyMySQL的安装及连接 MySQL是一个关系型数据库, ...

#96. Text Cleaning in Python: Effective Data Cleaning Tutorial

... How to Connect Python to SQL Server with Pyodbc · Python Switch ... MySQL Text Storage Sizes: Understanding the Differences Between TEXT ...

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