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- Pyqt5 Qsqldatabase Qoci Driver Not Loaded
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QSqlDatabase: QMYSQL driver not loadedQSqlDatabase: available drivers: QSQLITE QODBC QODBC3 QPSQL QPSQL7. Ask Question. QSqlDatabase: QMYSQL driver not loaded QSqlDatabase: available drivers: QSQLITE QODBC QODBC3 QPSQL QPSQL7. I have window7, 32 bit System, Msql 5.1.72, qt.5.1.1, visual Studio 2010. Hello Everyone, as you can see, I have problem with loading libqsqloci.so. I compiled this library in Debian 3.9.8-1 x8664 GNU/Linux with success. Now I have this library, but it doesn't work. SQL Database Drivers. This only happens if the QOCI driver is compiled as a plugin. To work around this problem, either compile the driver into the Qt libray itself, or configure Qt with the option '-DQTNOLIBRARYUNLOAD'. QSqlDatabase: QMYSQL driver not loaded QSqlDatabase: available drivers: QMYSQL. The problem is probably that the. What to do about QSqlDatabase: QOCI driver not loaded closed Ask Question Asked 1 year, 4 months ago. Active 1 year, 4 months ago. Viewed 392 times 0. QGIS - 3.0.1. I am trying to connect to the Oracle database. I am not an expert in QGIS, pyqgis at all. I took help of. I know that there are few topics on the Internet about QPSQL driver not loaded problem but none of the solutions have helped me. Let's start from the beggining. This is what I'm using: Windows 7.
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PyQt API contains an elaborate class system to communicate with many SQL based databases. Its QSqlDatabase provides access through a Connection object. Following is the list of currently available SQL drivers −
Create a connection (i.e., an instance of QSqlDatabase) by calling one of the static addDatabase functions, where you specify the driver or type of driver to use (depending on the type of database) and a connection name. A connection is known by its own name, not by the name of the database it connects to. You can have multiple connections to.
| Sr.No. | Driver Type & Description |
|---|---|
| 1 | QDB2 IBM DB2 |
| 2 | QIBASE Borland InterBase Driver |
| 3 | QMYSQL MySQL Driver |
| 4 | QOCI Oracle Call Interface Driver |
| 5 | QODBC ODBC Driver (includes Microsoft SQL Server) |
| 6 | QPSQL PostgreSQL Driver |
| 7 | QSQLITE SQLite version 3 or above |
| 8 | QSQLITE2 SQLite version 2 |
Example
A connection with a SQLite database is established using the static method −
Other methods of QSqlDatabase class are as follows −
| Sr.No. | Methods & Description |
|---|---|
| 1 | setDatabaseName() Sets the name of the database with which connection is sought |
| 2 | setHostName() Sets the name of the host on which the database is installed |
| 3 | setUserName() Specifies the user name for connection |
| 4 | setPassword() Sets the connection object’s password if any |
| 5 | commit() Commits the transactions and returns true if successful |
| 6 | rollback() Rolls back the database transaction |
| 7 | close() Closes the connection |
QSqlQuery class has the functionality to execute and manipulate SQL commands. Both DDL and DML type of SQL queries can be executed. The most important method in the class is exec_(), which takes as an argument a string containing SQL statement to be executed.
The following script creates a SQLite database sports.db with a table of sportsperson populated with five records.
QSqlTableModel class in PyQt is a high-level interface that provides editable data model for reading and writing records in a single table. This model is used to populate a QTableView object. It presents to the user a scrollable and editable view that can be put on any top level window.
A QTableModel object is declared in the following manner −
Its editing strategy can be set to any of the following −
| QSqlTableModel.OnFieldChange | All changes will be applied immediately |
| QSqlTableModel.OnRowChange | Changes will be applied when the user selects a different row |
| QSqlTableModel.OnManualSubmit | All changes will be cached until either submitAll() or revertAll() is called |
Example
In the following example, sportsperson table is used as a model and the strategy is set as −
QTableView class is part of Model/View framework in PyQt. The QTableView object is created as follows −
This QTableView object and two QPushButton widgets are added to the top level QDialog window. Clicked() signal of add button is connected to addrow() which performs insertRow() on the model table.
The Slot associated with the delete button executes a lambda function that deletes a row, which is selected by the user.
The complete code is as follows −
The above code produces the following output −
I've just done developing a QT CRUD Application. I am using SQLite to store the information locally in my disk where the application is running. This way my application works fine.
But the app lack the the a central database server. Therefor, I started by installing MySql-server and MySql-workbench. I imported my DB in the workbench and made sure the server is running.
Now on Qt, I wrote the following lines to conenct to my server on the 'localhost ' using port '3306' as follow:
However, I get the following error on QT 'Application Outout ':
QSqlDatabase: QMYSQL driver not loaded QSqlDatabase: available drivers: QSQLITE QMYSQL QMYSQL3 QODBC QODBC3 QPSQL QPSQL7
I tried to make sure that libmysql.dll is located in 'C:Program FilesMySQLMySQL Server 5.7lib' ..
I copied it also to 'C:UsersAbubakrDocumentsGitHubDEBUGbuild-Muwassa-Desktop_Qt_5_4_2_MinGW_32bit2-debug'
but it is not working at all.
Please help !!
Qsqldatabase Qoci Driver Not Loaded Lyrics
1 Answer
Pyqt5 Qsqldatabase Qoci Driver Not Loaded
You need to build the QMYSQL driver by yourself first.
When you download Qt you have also the source that are provided with it.
Qoci Driver Not Loaded
In my case, it is in : C:Qt5.9SrcqtbasesrcpluginssqldriversmysqlHere you have a *.pro (that is a kind of makefile generator). You just have to open it with QtCreator, Compile it and you will get a dll. This dll is the MySQL driver and must be in the same dirent of your application.
To do that, if you have a problem with the compilation (like mysql.h not found), you must 'install' mysql library also.
In Linux you can have the same issue as well.