The QSql namespace contains miscellaneous identifiers used throughout the Qt SQL library.
See also
QtSql Module
Numerical values in a database can have precisions greater than their corresponding C++ types. This enum lists the policies for representing such values in the application.
Constant | Description |
---|---|
QSql.LowPrecisionInt32 | Force 32bit integer values. In case of floating point numbers, the fractional part is silently discarded. |
QSql.LowPrecisionInt64 | Force 64bit integer values. In case of floating point numbers, the fractional part is silently discarded. |
QSql.LowPrecisionDouble | Force double values. This is the default policy. |
QSql.HighPrecision | Strings will be used to preserve precision. |
Note: The actual behaviour if an overflow occurs is driver specific. The Oracle database just returns an error in this case.
This enum type describes special SQL navigation locations:
Constant | Description |
---|---|
QSql.BeforeFirstRow | Before the first record. |
QSql.AfterLastRow | After the last record. |
See also
This enum is used to specify the type of a bind parameter.
Constant | Description |
---|---|
QSql.In | The bind parameter is used to put data into the database. |
QSql.Out | The bind parameter is used to receive data from the database. |
QSql.InOut | The bind parameter is used to put data into the database; it will be overwritten with output data on executing a query. |
QSql.Binary | This must be OR’d with one of the other flags if you want to indicate that the data being transferred is raw binary data. |
This enum type describes types of SQL tables.
Constant | Description |
---|---|
QSql.Tables | All the tables visible to the user. |
QSql.SystemTables | Internal tables used by the database. |
QSql.Views | All the views visible to the user. |
QSql.AllTables | All of the above. |