QSqlError ¶

概要 ¶

详细描述 ¶

A QSqlError object can provide database-specific error data, including the driverText() and databaseText() messages (or both concatenated together as text() ), and the nativeErrorCode() and type() .

另请参阅

lastError() lastError()

class QSqlError ( other ) ¶

QSqlError([driverText=””[, databaseText=””[, type=NoError[, errorCode=””]]]])

QSqlError(driverText, databaseText, type, number)

注意

This constructor is deprecated.

参数

• type – ErrorType

• driverText – unicode

• databaseText – unicode

• other – QSqlError

• number – int

• errorCode – unicode

PySide2.QtSql.QSqlError. ErrorType ¶

This enum type describes the context in which the error occurred, e.g., a connection error, a statement error, etc.

常量	描述
QSqlError.NoError	没有发生错误。
QSqlError.ConnectionError	Connection error.
QSqlError.StatementError	SQL statement syntax error.
QSqlError.TransactionError	Transaction failed error.
QSqlError.UnknownError	Unknown error.

PySide2.QtSql.QSqlError. databaseText ( ) ¶

返回类型

unicode

Returns the text of the error as reported by the database. This may contain database-specific descriptions; it may be empty.

另请参阅

setDatabaseText() driverText() text()

PySide2.QtSql.QSqlError. driverText ( ) ¶

返回类型

unicode

Returns the text of the error as reported by the driver. This may contain database-specific descriptions. It may also be empty.

另请参阅

setDriverText() databaseText() text()

PySide2.QtSql.QSqlError. isValid ( ) ¶

返回类型

bool

返回 true if an error is set, otherwise false.

范例：

model = QSqlQueryModel()
model.setQuery("select * from myTable")
if model.lastError().isValid():
    print model.lastError()
											

另请参阅

type()

PySide2.QtSql.QSqlError. nativeErrorCode ( ) ¶

返回类型

unicode

Returns the database-specific error code, or an empty string if it cannot be determined.

PySide2.QtSql.QSqlError. number ( ) ¶

返回类型

int

注意

此函数被弃用。

Returns the database-specific error number, or -1 if it cannot be determined.

Returns 0 if the error code is not an integer.

警告

Some databases use alphanumeric error codes, which makes unreliable if such a database is used.

使用 nativeErrorCode() instead

另请参阅

setNumber() nativeErrorCode()

PySide2.QtSql.QSqlError. __ne__ ( other ) ¶

参数

other – QSqlError

返回类型

bool

Compare the other error’s values to this error and returns true if it is not equal.

PySide2.QtSql.QSqlError. __eq__ ( other ) ¶

参数

other – QSqlError

返回类型

bool

Compare the other error’s values to this error and returns true , if it equal.

PySide2.QtSql.QSqlError. setDatabaseText ( databaseText ) ¶

参数

databaseText – unicode

注意

此函数被弃用。

Sets the database error text to the value of databaseText .

使用 QSqlError (const QString & driverText , const QString & databaseText , ErrorType type, int number) instead

另请参阅

databaseText() setDriverText() text()

PySide2.QtSql.QSqlError. setDriverText ( driverText ) ¶

参数

driverText – unicode

注意

此函数被弃用。

Sets the driver error text to the value of driverText .

使用 QSqlError (const QString & driverText , const QString & databaseText , ErrorType type, int number) instead

另请参阅

driverText() setDatabaseText() text()

PySide2.QtSql.QSqlError. setNumber ( number ) ¶

参数

number – int

注意

此函数被弃用。

Sets the database-specific error number to number .

使用 QSqlError (const QString & driverText , const QString & databaseText , ErrorType type, int number) instead

另请参阅

number()

PySide2.QtSql.QSqlError. setType ( type ) ¶

参数

type – ErrorType

注意

此函数被弃用。

Sets the error type to the value of type .

使用 QSqlError (const QString & driverText , const QString & databaseText , ErrorType type, int number) instead

另请参阅

type()

PySide2.QtSql.QSqlError. swap ( other ) ¶

参数

other – QSqlError

Swaps error other with this error. This operation is very fast and never fails.

PySide2.QtSql.QSqlError. text ( ) ¶

返回类型

unicode

This is a convenience function that returns databaseText() and driverText() concatenated into a single string.

另请参阅

driverText() databaseText()

PySide2.QtSql.QSqlError. type ( ) ¶

返回类型

ErrorType

Returns the error type, or -1 if the type cannot be determined.

另请参阅

setType()