QSqlRecord

QSqlRecord is a class in the Qt framework that represents a single record from a database table. It stores field-value pairs and provides methods to access and manipulate these fields. A QSqlRecord can be thought of as a row in a database table, where each field in the record corresponds to a column in that table. It holds information about the field names, data types, and values.

You can retrieve a QSqlRecord from a QSqlQuery object after executing a query that selects data. The QSqlRecord object allows you to iterate through its fields, get the name and value of each field, and check if a field is null. This makes it convenient to process and display database data. For instance, you can use QSqlRecord to populate widgets in a user interface or to perform data validation.

QSqlRecord also supports setting values for its fields, although this is typically done before inserting or updating a record in the database. It provides methods like setValue() to assign a value to a specific field and setValues() to set multiple fields at once. The class is an integral part of Qt's SQL module, facilitating database interactions in a consistent and object-oriented manner across different database drivers.