c++ - QT select from mysql -


i'm beginner in qt. i'm using qt5 in ubuntu. want select columns table in mysql database 1 column(id) equal variable in integer type. should do? wrote code have error!

qsqlquery query; int k=10; query.exec("select name,family employees id='"+k+"'"); while(query.next()){     qdebug()<<query.value(0).tostring();     qdebug()<<query.value(1).tostring(); }

and error:

 invalid operands of types 'const char*' , 'const char [2]' binary 'operator+'  query.exec("select name,family employees id='"+k+"'");

i not familiar qt, simple google search return :

https://stackoverflow.com/a/15902962/4421474

so in case be:

qsqlquery query; query.prepare(qstring("select name,family employees id = :id")); query.bindvalue(":id", k); query.exec();

by way have typo "selecr must "select.


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