MySQL Python Connector

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MySQL Python Connector

Python Connector

MySQL Python connector enables Python programs to access MySQL databases, the connector uses an API which is compliant with the Python Database API Specification. The API is written in pure Python and does not have any dependencies except for the Python Standard Library. The connector provides full support for :

  • MySQL functionality
  • Connections using TCP/IP sockets and on Unix using Unix sockets.
  • Secure TCP/IP connections using SSL.
  • Self-contained driver. The connector does not require the MySQL client library or any Python modules outside the standard library.

Python Connector version details :

Python Connector
Version

MySQL Server
Versions

Python Versions

1.1 ( current development series.)

5.7, 5.6, 5.5 (5.1, 5.0, 4.1)

3.1 and later, 2.7, 2.6

1.0

5.7, 5.6, 5.5 (5.1, 5.0, 4.1)

3.1 and later, 2.7, 2.6 (2.5, 2.4)

Download Python Connector :
The python connector runs on any platform where Python is installed. Python comes preloaded on almost all Linux distribution or Unix-like systems such as Mac OS X and FreeBSD. You can download the latest version of Python Connector binaries and sources from the following website -
http://dev.MySQL.com/downloads/connector/python/.

Install Python Connector on Microsoft Windows

Before installing the Connector on Windows :

  • To complete the installation operation, root or administrator privileges may be required.
  • Before installing the Python distribution on your system, enable python.exe in Windows %PATH% setting ( path environment variable) or manually add it to, if it is not enabled.

Installing the Windows Connector/ODBC Driver :
Select and download the MSI installer packages from http://dev.MySQL.com/downloads/connector/python/ as per your requirement.

mysql python connector download

Next, we will install the "Windows (Architecture Independent), MSI Installer, Python 3.2 " connector in a preloaded Windows 7, MySQL 5.6 and Python 3.2.

Now follow the following steps :

Step -1 :
Double click the installer (here it is 'MySQL-connector-python-1.2.2-py3.2.msi')

mysql python install step1

Step -2 :
Click on 'Run' and complete the process.

mysql python installs step2

Connecting to MySQL using Python connector

The following example shows how to connect and handle errors to the MySQL server. The connect() constructor creates a connection to the MySQL server and returns a MySQL Connection object. Within the example code, it is stored in the variable 'db'.

#!/usr/bin/python

import MySQL.connector

from MySQL.connector import errorcode

try:

  db = MySQL.connector.connect(user='root', password='datasoft123',

                                host='127.0.0.1', database='sakila')

except MySQL.connector.Error as err:

  if err.errno == errorcode.ER_ACCESS_DENIED_ERROR:

    print("Acess denied/wrong  user name or password")

  elif err.errno == errorcode.ER_BAD_DB_ERROR:

    print("Database does not exists")

  else:

    print(err)

else:

  db.close()

Querying data using Python connector

We want to get the names (first_name, last_name), salary of the employees whose salary greater than the average salary of all department.

Structure of 'hr' database :

mysql data model

Sample table : employees

+-------------+-------------+-------------+----------+--------------------+------------+------------+----------+----------------+------------+---------------+
| EMPLOYEE_ID | FIRST_NAME  | LAST_NAME   | EMAIL    | PHONE_NUMBER       | HIRE_DATE  | JOB_ID     | SALARY   | COMMISSION_PCT | MANAGER_ID | DEPARTMENT_ID |
+-------------+-------------+-------------+----------+--------------------+------------+------------+----------+----------------+------------+---------------+
|         100 | Steven      | King        | SKING    | 515.123.4567       | 1987-06-17 | AD_PRES    | 24000.00 |           0.00 |          0 |   		  90 |
|         101 | Neena       | Kochhar     | NKOCHHAR | 515.123.4568       | 1987-06-18 | AD_VP      | 17000.00 |           0.00 |        100 |            90 |
|         102 | Lex         | De Haan     | LDEHAAN  | 515.123.4569       | 1987-06-19 | AD_VP      | 17000.00 |           0.00 |        100 |            90 |
|         103 | Alexander   | Hunold      | AHUNOLD  | 590.423.4567       | 1987-06-20 | IT_PROG    |  9000.00 |           0.00 |        102 |            60 |
|         104 | Bruce       | Ernst       | BERNST   | 590.423.4568       | 1987-06-21 | IT_PROG    |  6000.00 |           0.00 |        103 |            60 |
|         105 | David       | Austin      | DAUSTIN  | 590.423.4569       | 1987-06-22 | IT_PROG    |  4800.00 |           0.00 |        103 |            60 |
|         106 | Valli       | Pataballa   | VPATABAL | 590.423.4560       | 1987-06-23 | IT_PROG    |  4800.00 |           0.00 |        103 |            60 |
|         107 | Diana       | Lorentz     | DLORENTZ | 590.423.5567       | 1987-06-24 | IT_PROG    |  4200.00 |           0.00 |        103 |            60 |
|         108 | Nancy       | Greenberg   | NGREENBE | 515.124.4569       | 1987-06-25 | FI_MGR     | 12000.00 |           0.00 |        101 |           100 |
|         109 | Daniel      | Faviet      | DFAVIET  | 515.124.4169       | 1987-06-26 | FI_ACCOUNT |  9000.00 |           0.00 |        108 |           100 |
|         110 | John        | Chen        | JCHEN    | 515.124.4269       | 1987-06-27 | FI_ACCOUNT |  8200.00 |           0.00 |        108 |           100 |
|         111 | Ismael      | Sciarra     | ISCIARRA | 515.124.4369       | 1987-06-28 | FI_ACCOUNT |  7700.00 |           0.00 |        108 |           100 |
|         112 | Jose Manuel | Urman       | JMURMAN  | 515.124.4469       | 1987-06-29 | FI_ACCOUNT |  7800.00 |           0.00 |        108 |           100 |
|         113 | Luis        | Popp        | LPOPP    | 515.124.4567       | 1987-06-30 | FI_ACCOUNT |  6900.00 |           0.00 |        108 |           100 |
|         114 | Den         | Raphaely    | DRAPHEAL | 515.127.4561       | 1987-07-01 | PU_MAN     | 11000.00 |           0.00 |        100 |            30 |
|         115 | Alexander   | Khoo        | AKHOO    | 515.127.4562       | 1987-07-02 | PU_CLERK   |  3100.00 |           0.00 |        114 |            30 |
|         116 | Shelli      | Baida       | SBAIDA   | 515.127.4563       | 1987-07-03 | PU_CLERK   |  2900.00 |           0.00 |        114 |            30 |
|         117 | Sigal       | Tobias      | STOBIAS  | 515.127.4564       | 1987-07-04 | PU_CLERK   |  2800.00 |           0.00 |        114 |            30 |
|         118 | Guy         | Himuro      | GHIMURO  | 515.127.4565       | 1987-07-05 | PU_CLERK   |  2600.00 |           0.00 |        114 |            30 |
|         119 | Karen       | Colmenares  | KCOLMENA | 515.127.4566       | 1987-07-06 | PU_CLERK   |  2500.00 |           0.00 |        114 |            30 |
|         120 | Matthew     | Weiss       | MWEISS   | 650.123.1234       | 1987-07-07 | ST_MAN     |  8000.00 |           0.00 |        100 |            50 |
|         121 | Adam        | Fripp       | AFRIPP   | 650.123.2234       | 1987-07-08 | ST_MAN     |  8200.00 |           0.00 |        100 |            50 |
|         122 | Payam       | Kaufling    | PKAUFLIN | 650.123.3234       | 1987-07-09 | ST_MAN     |  7900.00 |           0.00 |        100 |            50 |
|         123 | Shanta      | Vollman     | SVOLLMAN | 650.123.4234       | 1987-07-10 | ST_MAN     |  6500.00 |           0.00 |        100 |            50 |
|         124 | Kevin       | Mourgos     | KMOURGOS | 650.123.5234       | 1987-07-11 | ST_MAN     |  5800.00 |           0.00 |        100 |            50 |
|         125 | Julia       | Nayer       | JNAYER   | 650.124.1214       | 1987-07-12 | ST_CLERK   |  3200.00 |           0.00 |        120 |            50 |
|         126 | Irene       | Mikkilineni | IMIKKILI | 650.124.1224       | 1987-07-13 | ST_CLERK   |  2700.00 |           0.00 |        120 |            50 |
|         127 | James       | Landry      | JLANDRY  | 650.124.1334       | 1987-07-14 | ST_CLERK   |  2400.00 |           0.00 |        120 |            50 |
|         128 | Steven      | Markle      | SMARKLE  | 650.124.1434       | 1987-07-15 | ST_CLERK   |  2200.00 |           0.00 |        120 |            50 |
|         129 | Laura       | Bissot      | LBISSOT  | 650.124.5234       | 1987-07-16 | ST_CLERK   |  3300.00 |           0.00 |        121 |            50 |
|         130 | Mozhe       | Atkinson    | MATKINSO | 650.124.6234       | 1987-07-17 | ST_CLERK   |  2800.00 |           0.00 |        121 |            50 |
|         131 | James       | Marlow      | JAMRLOW  | 650.124.7234       | 1987-07-18 | ST_CLERK   |  2500.00 |           0.00 |        121 |            50 |
|         132 | TJ          | Olson       | TJOLSON  | 650.124.8234       | 1987-07-19 | ST_CLERK   |  2100.00 |           0.00 |        121 |            50 |
|         133 | Jason       | Mallin      | JMALLIN  | 650.127.1934       | 1987-07-20 | ST_CLERK   |  3300.00 |           0.00 |        122 |            50 |
|         134 | Michael     | Rogers      | MROGERS  | 650.127.1834       | 1987-07-21 | ST_CLERK   |  2900.00 |           0.00 |        122 |            50 |
|         135 | Ki          | Gee         | KGEE     | 650.127.1734       | 1987-07-22 | ST_CLERK   |  2400.00 |           0.00 |        122 |            50 |
|         136 | Hazel       | Philtanker  | HPHILTAN | 650.127.1634       | 1987-07-23 | ST_CLERK   |  2200.00 |           0.00 |        122 |            50 |
|         137 | Renske      | Ladwig      | RLADWIG  | 650.121.1234       | 1987-07-24 | ST_CLERK   |  3600.00 |           0.00 |        123 |            50 |
|         138 | Stephen     | Stiles      | SSTILES  | 650.121.2034       | 1987-07-25 | ST_CLERK   |  3200.00 |           0.00 |        123 |            50 |
|         139 | John        | Seo         | JSEO     | 650.121.2019       | 1987-07-26 | ST_CLERK   |  2700.00 |           0.00 |        123 |            50 |
|         140 | Joshua      | Patel       | JPATEL   | 650.121.1834       | 1987-07-27 | ST_CLERK   |  2500.00 |           0.00 |        123 |            50 |
|         141 | Trenna      | Rajs        | TRAJS    | 650.121.8009       | 1987-07-28 | ST_CLERK   |  3500.00 |           0.00 |        124 |            50 |
|         142 | Curtis      | Davies      | CDAVIES  | 650.121.2994       | 1987-07-29 | ST_CLERK   |  3100.00 |           0.00 |        124 |            50 |
|         143 | Randall     | Matos       | RMATOS   | 650.121.2874       | 1987-07-30 | ST_CLERK   |  2600.00 |           0.00 |        124 |            50 |
|         144 | Peter       | Vargas      | PVARGAS  | 650.121.2004       | 1987-07-31 | ST_CLERK   |  2500.00 |           0.00 |        124 |            50 |
|         145 | John        | Russell     | JRUSSEL  | 011.44.1344.429268 | 1987-08-01 | SA_MAN     | 14000.00 |           0.40 |        100 |            80 |
|         146 | Karen       | Partners    | KPARTNER | 011.44.1344.467268 | 1987-08-02 | SA_MAN     | 13500.00 |           0.30 |        100 |            80 |
|         147 | Alberto     | Errazuriz   | AERRAZUR | 011.44.1344.429278 | 1987-08-03 | SA_MAN     | 12000.00 |           0.30 |        100 |            80 |
|         148 | Gerald      | Cambrault   | GCAMBRAU | 011.44.1344.619268 | 1987-08-04 | SA_MAN     | 11000.00 |           0.30 |        100 |            80 |
|         149 | Eleni       | Zlotkey     | EZLOTKEY | 011.44.1344.429018 | 1987-08-05 | SA_MAN     | 10500.00 |           0.20 |        100 |            80 |
|         150 | Peter       | Tucker      | PTUCKER  | 011.44.1344.129268 | 1987-08-06 | SA_REP     | 10000.00 |           0.30 |        145 |            80 |
|         151 | David       | Bernstein   | DBERNSTE | 011.44.1344.345268 | 1987-08-07 | SA_REP     |  9500.00 |           0.25 |        145 |            80 |
|         152 | Peter       | Hall        | PHALL    | 011.44.1344.478968 | 1987-08-08 | SA_REP     |  9000.00 |           0.25 |        145 |            80 |
|         153 | Christopher | Olsen       | COLSEN   | 011.44.1344.498718 | 1987-08-09 | SA_REP     |  8000.00 |           0.20 |        145 |            80 |
|         154 | Nanette     | Cambrault   | NCAMBRAU | 011.44.1344.987668 | 1987-08-10 | SA_REP     |  7500.00 |           0.20 |        145 |            80 |
|         155 | Oliver      | Tuvault     | OTUVAULT | 011.44.1344.486508 | 1987-08-11 | SA_REP     |  7000.00 |           0.15 |        145 |            80 |
|         156 | Janette     | King        | JKING    | 011.44.1345.429268 | 1987-08-12 | SA_REP     | 10000.00 |           0.35 |        146 |            80 |
|         157 | Patrick     | Sully       | PSULLY   | 011.44.1345.929268 | 1987-08-13 | SA_REP     |  9500.00 |           0.35 |        146 |            80 |
|         158 | Allan       | McEwen      | AMCEWEN  | 011.44.1345.829268 | 1987-08-14 | SA_REP     |  9000.00 |           0.35 |        146 |            80 |
|         159 | Lindsey     | Smith       | LSMITH   | 011.44.1345.729268 | 1987-08-15 | SA_REP     |  8000.00 |           0.30 |        146 |            80 |
|         160 | Louise      | Doran       | LDORAN   | 011.44.1345.629268 | 1987-08-16 | SA_REP     |  7500.00 |           0.30 |        146 |            80 |
|         161 | Sarath      | Sewall      | SSEWALL  | 011.44.1345.529268 | 1987-08-17 | SA_REP     |  7000.00 |           0.25 |        146 |            80 |
|         162 | Clara       | Vishney     | CVISHNEY | 011.44.1346.129268 | 1987-08-18 | SA_REP     | 10500.00 |           0.25 |        147 |            80 |
|         163 | Danielle    | Greene      | DGREENE  | 011.44.1346.229268 | 1987-08-19 | SA_REP     |  9500.00 |           0.15 |        147 |            80 |
|         164 | Mattea      | Marvins     | MMARVINS | 011.44.1346.329268 | 1987-08-20 | SA_REP     |  7200.00 |           0.10 |        147 |            80 |
|         165 | David       | Lee         | DLEE     | 011.44.1346.529268 | 1987-08-21 | SA_REP     |  6800.00 |           0.10 |        147 |            80 |
|         166 | Sundar      | Ande        | SANDE    | 011.44.1346.629268 | 1987-08-22 | SA_REP     |  6400.00 |           0.10 |        147 |            80 |
|         167 | Amit        | Banda       | ABANDA   | 011.44.1346.729268 | 1987-08-23 | SA_REP     |  6200.00 |           0.10 |        147 |            80 |
|         168 | Lisa        | Ozer        | LOZER    | 011.44.1343.929268 | 1987-08-24 | SA_REP     | 11500.00 |           0.25 |        148 |            80 |
|         169 | Harrison    | Bloom       | HBLOOM   | 011.44.1343.829268 | 1987-08-25 | SA_REP     | 10000.00 |           0.20 |        148 |            80 |
|         170 | Tayler      | Fox         | TFOX     | 011.44.1343.729268 | 1987-08-26 | SA_REP     |  9600.00 |           0.20 |        148 |            80 |
|         171 | William     | Smith       | WSMITH   | 011.44.1343.629268 | 1987-08-27 | SA_REP     |  7400.00 |           0.15 |        148 |            80 |
|         172 | Elizabeth   | Bates       | EBATES   | 011.44.1343.529268 | 1987-08-28 | SA_REP     |  7300.00 |           0.15 |        148 |            80 |
|         173 | Sundita     | Kumar       | SKUMAR   | 011.44.1343.329268 | 1987-08-29 | SA_REP     |  6100.00 |           0.10 |        148 |            80 |
|         174 | Ellen       | Abel        | EABEL    | 011.44.1644.429267 | 1987-08-30 | SA_REP     | 11000.00 |           0.30 |        149 |            80 |
|         175 | Alyssa      | Hutton      | AHUTTON  | 011.44.1644.429266 | 1987-08-31 | SA_REP     |  8800.00 |           0.25 |        149 |            80 |
|         176 | Jonathon    | Taylor      | JTAYLOR  | 011.44.1644.429265 | 1987-09-01 | SA_REP     |  8600.00 |           0.20 |        149 |            80 |
|         177 | Jack        | Livingston  | JLIVINGS | 011.44.1644.429264 | 1987-09-02 | SA_REP     |  8400.00 |           0.20 |        149 |            80 |
|         178 | Kimberely   | Grant       | KGRANT   | 011.44.1644.429263 | 1987-09-03 | SA_REP     |  7000.00 |           0.15 |        149 |             0 |
|         179 | Charles     | Johnson     | CJOHNSON | 011.44.1644.429262 | 1987-09-04 | SA_REP     |  6200.00 |           0.10 |        149 |            80 |
|         180 | Winston     | Taylor      | WTAYLOR  | 650.507.9876       | 1987-09-05 | SH_CLERK   |  3200.00 |           0.00 |        120 |            50 |
|         181 | Jean        | Fleaur      | JFLEAUR  | 650.507.9877       | 1987-09-06 | SH_CLERK   |  3100.00 |           0.00 |        120 |            50 |
|         182 | Martha      | Sullivan    | MSULLIVA | 650.507.9878       | 1987-09-07 | SH_CLERK   |  2500.00 |           0.00 |        120 |            50 |
|         183 | Girard      | Geoni       | GGEONI   | 650.507.9879       | 1987-09-08 | SH_CLERK   |  2800.00 |           0.00 |        120 |            50 |
|         184 | Nandita     | Sarchand    | NSARCHAN | 650.509.1876       | 1987-09-09 | SH_CLERK   |  4200.00 |           0.00 |        121 |            50 |
|         185 | Alexis      | Bull        | ABULL    | 650.509.2876       | 1987-09-10 | SH_CLERK   |  4100.00 |           0.00 |        121 |            50 |
|         186 | Julia       | Dellinger   | JDELLING | 650.509.3876       | 1987-09-11 | SH_CLERK   |  3400.00 |           0.00 |        121 |            50 |
|         187 | Anthony     | Cabrio      | ACABRIO  | 650.509.4876       | 1987-09-12 | SH_CLERK   |  3000.00 |           0.00 |        121 |            50 |
|         188 | Kelly       | Chung       | KCHUNG   | 650.505.1876       | 1987-09-13 | SH_CLERK   |  3800.00 |           0.00 |        122 |            50 |
|         189 | Jennifer    | Dilly       | JDILLY   | 650.505.2876       | 1987-09-14 | SH_CLERK   |  3600.00 |           0.00 |        122 |            50 |
|         190 | Timothy     | Gates       | TGATES   | 650.505.3876       | 1987-09-15 | SH_CLERK   |  2900.00 |           0.00 |        122 |            50 |
|         191 | Randall     | Perkins     | RPERKINS | 650.505.4876       | 1987-09-16 | SH_CLERK   |  2500.00 |           0.00 |        122 |            50 |
|         192 | Sarah       | Bell        | SBELL    | 650.501.1876       | 1987-09-17 | SH_CLERK   |  4000.00 |           0.00 |        123 |            50 |
|         193 | Britney     | Everett     | BEVERETT | 650.501.2876       | 1987-09-18 | SH_CLERK   |  3900.00 |           0.00 |        123 |            50 |
|         194 | Samuel      | McCain      | SMCCAIN  | 650.501.3876       | 1987-09-19 | SH_CLERK   |  3200.00 |           0.00 |        123 |            50 |
|         195 | Vance       | Jones       | VJONES   | 650.501.4876       | 1987-09-20 | SH_CLERK   |  2800.00 |           0.00 |        123 |            50 |
|         196 | Alana       | Walsh       | AWALSH   | 650.507.9811       | 1987-09-21 | SH_CLERK   |  3100.00 |           0.00 |        124 |            50 |
|         197 | Kevin       | Feeney      | KFEENEY  | 650.507.9822       | 1987-09-22 | SH_CLERK   |  3000.00 |           0.00 |        124 |            50 |
|         198 | Donald      | OConnell    | DOCONNEL | 650.507.9833       | 1987-09-23 | SH_CLERK   |  2600.00 |           0.00 |        124 |            50 |
|         199 | Douglas     | Grant       | DGRANT   | 650.507.9844       | 1987-09-24 | SH_CLERK   |  2600.00 |           0.00 |        124 |            50 |
|         200 | Jennifer    | Whalen      | JWHALEN  | 515.123.4444       | 1987-09-25 | AD_ASST    |  4400.00 |           0.00 |        101 |            10 |
|         201 | Michael     | Hartstein   | MHARTSTE | 515.123.5555       | 1987-09-26 | MK_MAN     | 13000.00 |           0.00 |        100 |            20 |
|         202 | Pat         | Fay         | PFAY     | 603.123.6666       | 1987-09-27 | MK_REP     |  6000.00 |           0.00 |        201 |            20 |
|         203 | Susan       | Mavris      | SMAVRIS  | 515.123.7777       | 1987-09-28 | HR_REP     |  6500.00 |           0.00 |        101 |            40 |
|         204 | Hermann     | Baer        | HBAER    | 515.123.8888       | 1987-09-29 | PR_REP     | 10000.00 |           0.00 |        101 |            70 |
|         205 | Shelley     | Higgins     | SHIGGINS | 515.123.8080       | 1987-09-30 | AC_MGR     | 12000.00 |           0.00 |        101 |           110 |
|         206 | William     | Gietz       | WGIETZ   | 515.123.8181       | 1987-10-01 | AC_ACCOUNT |  8300.00 |           0.00 |        205 |           110 |
+-------------+-------------+-------------+----------+--------------------+------------+------------+----------+----------------+------------+---------------+

SQL Code :

view plaincopy to clipboardprint?

  1. SELECT b.first_name,b.last_name   
  2. FROM employees b   
  3. WHERE NOT EXISTS (SELECT 'X' FROM employees a WHERE a.manager_id = b.employee_id);  

Let execute above code in Python 3.2 :

  1. #!/usr/bin/python  
  2. import MySQL.connector  
  3.   
  4. db =  MySQL.connector.connect(host="localhost", # Host, usually localhost  
  5.                      user="root", # your username  
  6.                      password="**********", # your password  
  7.                      db="hr") # name of the data base  
  8. #create a Cursor object.  
  9. cur = db.cursor()   
  10.   
  11. # Write SQL statement here  
  12. cur.execute("SELECT b.first_name,b.last_name FROM employees b WHERE NOT EXISTS (SELECT 'X' FROM employees a WHERE a.manager_id = b.employee_id);")  
  13.   
  14. # print all the first and second cells of all the rows  
  15. for row in cur.fetchall() :  
  16.     print (row[0],row[1])  

Partial Output :

python 3.2  mysq 5.6 query output