@Redman Is the dataChanged() signal the primary reason elements are updated in the model? If so, I can likely skip overriding setData() and instead create a custom method that emits dataChanged() with the appropriate role name and index, triggered when the operation succeeds via a signal and slot.

Hi and welcome to devnet, There's no prebuilt MySQL for Androïd. If you really want that you'll have to first build the MariaDB client library for Androïd and then the MariaDB driver. That said, when people try to access a MySQL database directly like that from Androïd, it means they are planning to expose their server directly on internet which is a very bad idea. The recommendation is to have a REST api in front of the database that will return only required data and also abstract the database itself.

to continue the point @Christian-Ehrlicher mentioned above, blocking serial tasks usually exist on server daemon applications, but not on anything with user interaction or a GUI.

@Pato55 said in Problem with setFilter(), sql lite: thank you for saving my study life If your issue is solved, please don't forget to mark your post as such!

If you chose a CMake project, a CMakeLists.txt file will be used. You have to choose qmake as build system to get a .pro file.

None of the above. Pool your TCP connections on top of a few threads, and independently pool your few database connections on top of another set of threads. Make the actual queries asynchronous by queuing them through the tread pool. The solution's rather complex, though, and 1000 connections ain't that much, so you may be able to get away with a single thread for the TCP stack and a single thread for the SQL stack.

That's strange, you are binding to :ID which is not available in your query.