class QSql¶

The QSql namespace contains miscellaneous identifiers used throughout the Qt SQL module. More…

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Detailed Description¶

See also

Qt SQL

class Location¶

This enum type describes special SQL navigation locations:

Constant

Description

QSql.BeforeFirstRow

Before the first record.

QSql.AfterLastRow

After the last record.

See also

at()

Constant	Description
QSql.BeforeFirstRow	Before the first record.
QSql.AfterLastRow	After the last record.

class ParamTypeFlag¶

(inherits enum.Flag) 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.

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.

class TableType¶

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.

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.

class NumericalPrecisionPolicy¶

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.

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.