# QSqlRecord Class Reference
## [[QtSql](index.htm) module]
该QSqlRecord类封装了数据库记录。[More...](#details)
通过继承[QSqlIndex](qsqlindex.html)。
### Methods
* `__init__ (self)`
* `__init__ (self, QSqlRecord other)`
* `append (self, QSqlField field)`
* `clear (self)`
* `clearValues (self)`
* `bool contains (self, QString name)`
* `int count (self)`
* `QSqlField field (self, int i)`
* `QSqlField field (self, QString name)`
* `QString fieldName (self, int i)`
* `int indexOf (self, QString name)`
* `insert (self, int pos, QSqlField field)`
* `bool isEmpty (self)`
* `bool isGenerated (self, int i)`
* `bool isGenerated (self, QString name)`
* `bool isNull (self, int i)`
* `bool isNull (self, QString name)`
* `remove (self, int pos)`
* `replace (self, int pos, QSqlField field)`
* `setGenerated (self, QString name, bool generated)`
* `setGenerated (self, int i, bool generated)`
* `setNull (self, int i)`
* `setNull (self, QString name)`
* `setValue (self, int i, QVariant val)`
* `setValue (self, QString name, QVariant val)`
* `QVariant value (self, int i)`
* `QVariant value (self, QString name)`
### Special Methods
* `bool __eq__ (self, QSqlRecord other)`
* `__len__ (self)`
* `bool __ne__ (self, QSqlRecord other)`
* * *
## Detailed Description
该QSqlRecord类封装了数据库记录。
该QSqlRecord类封装了数据库记录(通常是排在数据库中的表或视图)的功能和特点。 QSqlRecord支持添加和删除字段,以及设置和检索的字段值。
的记录的字段“的值可以按名称或位置与设置[setValue](qsqlrecord.html#setValue)( ),如果你想设置一个字段设置为null的使用[setNull](qsqlrecord.html#setNull)( ) 。要通过名称找到使用的字段的位置[indexOf](qsqlrecord.html#indexOf)( ) ,并找到一个字段的名称在一个特定的位置,用[fieldName](qsqlrecord.html#fieldName)( ) 。使用[field](qsqlrecord.html#field)()来检索一个[QSqlField](qsqlfield.html)反对给定字段。使用[contains](qsqlrecord.html#contains)() ,以查看是否记录中包含一个特定的字段名称。
当生成的查询数据库只有那些字段上执行的量[isGenerated](qsqlrecord.html#isGenerated)( )为真都包含在生成的SQL 。
A记录可以添加与领域[append](qsqlrecord.html#append)()或[insert](qsqlrecord.html#insert)( ) ,替换为[replace](qsqlrecord.html#replace)( )中,用去除[remove](qsqlrecord.html#remove)( ) 。所有字段都可以与被删除[clear](qsqlrecord.html#clear)( ) 。字段的数目由下式给出[count](qsqlrecord.html#count)( ) ;他们所有的值可以使用被清零(空)[clearValues](qsqlrecord.html#clearValues)( ) 。
* * *
## Method Documentation
```
QSqlRecord.__init__ (self)
```
构造一个空的记录。
**See also** [isEmpty](qsqlrecord.html#isEmpty)( )[append](qsqlrecord.html#append)()和[insert](qsqlrecord.html#insert)( ) 。
```
QSqlRecord.__init__ (self, QSqlRecord other)
```
构造的副本_other_。
[QSqlRecord](qsqlrecord.html) is [implicitly shared](index.htm#implicitly-shared)。这意味着你可以做一个记录的副本,[constant time](index.htm#constant-time)。
```
QSqlRecord.append (self, QSqlField field)
```
附加字段的拷贝_field_到记录的末尾。
**See also** [insert](qsqlrecord.html#insert)( )[replace](qsqlrecord.html#replace)()和[remove](qsqlrecord.html#remove)( ) 。
```
QSqlRecord.clear (self)
```
删除所有记录的字段。
**See also** [clearValues](qsqlrecord.html#clearValues)()和[isEmpty](qsqlrecord.html#isEmpty)( ) 。
```
QSqlRecord.clearValues (self)
```
清除记录中的所有字段的值,并设置每个字段设置为null 。
**See also** [setValue](qsqlrecord.html#setValue)( ) 。
```
bool QSqlRecord.contains (self, QString name)
```
返回True如果在称为记录的字段_name_否则返回False 。
```
int QSqlRecord.count (self)
```
返回值的记录中的字段的数目。
**See also** [isEmpty](qsqlrecord.html#isEmpty)( ) 。
```
QSqlField QSqlRecord.field (self, int i)
```
[](qsqlfield.html)
[返回字段的位置_index_。如果_index_超出范围,函数返回一个](qsqlfield.html)[default-constructed value](index.htm#default-constructed-values)。
```
QSqlField QSqlRecord.field (self, QString name)
```
[
这是一个重载函数。
返回称为领域_name_。
```
QString QSqlRecord.fieldName (self, int i)
```
返回字段的名称位置_index_。如果该字段不存在,则返回一个空字符串。
](qsqlfield.html)
[**See also**](qsqlfield.html) [indexOf](qsqlrecord.html#indexOf)( ) 。
```
int QSqlRecord.indexOf (self, QString name)
```
返回字段的调用位置_name_在记录中,或-1,如果它不能被发现。字段名不区分大小写。如果多于一个字段相匹配,则返回第一个。
**See also** [fieldName](qsqlrecord.html#fieldName)( ) 。
```
QSqlRecord.insert (self, int pos, QSqlField field)
```
插入场_field_在位置_pos_在记录中。
**See also** [append](qsqlrecord.html#append)( )[replace](qsqlrecord.html#replace)()和[remove](qsqlrecord.html#remove)( ) 。
```
bool QSqlRecord.isEmpty (self)
```
返回True如果有记录中的任何字段,否则返回False 。
**See also** [append](qsqlrecord.html#append)( )[insert](qsqlrecord.html#insert)()和[clear](qsqlrecord.html#clear)( ) 。
```
bool QSqlRecord.isGenerated (self, int i)
```
如果记录有一个名为场,则返回True_name_而这一领域是要生成(默认),否则返回False 。
**See also** [setGenerated](qsqlrecord.html#setGenerated)( ) 。
```
bool QSqlRecord.isGenerated (self, QString name)
```
这是一个重载函数。
如果记录有一个字段位置,则返回True_index_而这一领域是要生成(默认),否则返回False 。
**See also** [setGenerated](qsqlrecord.html#setGenerated)( ) 。
```
bool QSqlRecord.isNull (self, int i)
```
返回True如果调用该领域_name_为空或如果没有所谓的场_name_否则返回False 。
**See also** [setNull](qsqlrecord.html#setNull)( ) 。
```
bool QSqlRecord.isNull (self, QString name)
```
这是一个重载函数。
返回True如果字段_index_为null ,或者如果没有字段位置_index_否则返回False 。
```
QSqlRecord.remove (self, int pos)
```
删除该领域的地位_pos_。如果_pos_超出范围,没有任何反应。
**See also** [append](qsqlrecord.html#append)( )[insert](qsqlrecord.html#insert)()和[replace](qsqlrecord.html#replace)( ) 。
```
QSqlRecord.replace (self, int pos, QSqlField field)
```
取代了场位置_pos_用给定的_field_。如果_pos_超出范围,没有任何反应。
**See also** [append](qsqlrecord.html#append)( )[insert](qsqlrecord.html#insert)()和[remove](qsqlrecord.html#remove)( ) 。
```
QSqlRecord.setGenerated (self, QString name, bool generated)
```
设置生成的标志字段称为_name_至_generated_。如果该字段不存在,则什么也不会发生。只有具有领域_generated_设置为真包含在由生成的SQL[QSqlQueryModel](qsqlquerymodel.html)例如。
**See also** [isGenerated](qsqlrecord.html#isGenerated)( ) 。
```
QSqlRecord.setGenerated (self, int i, bool generated)
```
这是一个重载函数。
设置所生成的标志字段_index_至_generated_。
**See also** [isGenerated](qsqlrecord.html#isGenerated)( ) 。
```
QSqlRecord.setNull (self, int i)
```
设置字段的值_index_为null。如果该字段不存在,则什么也不会发生。
**See also** [isNull](qsqlrecord.html#isNull)()和[setValue](qsqlrecord.html#setValue)( ) 。
```
QSqlRecord.setNull (self, QString name)
```
这是一个重载函数。
设置字段中称为值_name_为null。如果该字段不存在,则什么也不会发生。
```
QSqlRecord.setValue (self, int i, QVariant val)
```
设置在位置字段的值_index_至_val_。如果该字段不存在,则什么也不会发生。
**See also** [value](qsqlrecord.html#value)()和[setNull](qsqlrecord.html#setNull)( ) 。
```
QSqlRecord.setValue (self, QString name, QVariant val)
```
这是一个重载函数。
设置字段中称为值_name_至_val_。如果该字段不存在,则什么也不会发生。
```
QVariant QSqlRecord.value (self, int i)
```
返回位于位置字段的值_index_在记录中。如果_index_是出界,无效[QVariant](qvariant.html)返回。
**See also** [setValue](qsqlrecord.html#setValue)( )[fieldName](qsqlrecord.html#fieldName)()和[isNull](qsqlrecord.html#isNull)( ) 。
```
QVariant QSqlRecord.value (self, QString name)
```
这是一个重载函数。
返回字段的所谓的值_name_在记录中。如果场_name_不存在一个无效的变体将被返回。
**See also** [indexOf](qsqlrecord.html#indexOf)( ) 。
```
bool QSqlRecord.__eq__ (self, QSqlRecord other)
```
```
QSqlRecord.__len__ (self)
```
```
bool QSqlRecord.__ne__ (self, QSqlRecord other)
```
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- QStyleOptionSizeGrip Class Reference
- QStyleOptionSlider Class Reference
- QStyleOptionSpinBox Class Reference
- QStyleOptionTab Class Reference
- QStyleOptionTabBarBase Class Reference
- QStyleOptionTabBarBaseV2 Class Reference
- QStyleOptionTabV2 Class Reference
- QStyleOptionTabV3 Class Reference
- QStyleOptionTabWidgetFrame Class Reference
- QStyleOptionTabWidgetFrameV2 Class Reference
- QStyleOptionTitleBar Class Reference
- QStyleOptionToolBar Class Reference
- QStyleOptionToolBox Class Reference
- QStyleOptionToolBoxV2 Class Reference
- QStyleOptionToolButton Class Reference
- QStyleOptionViewItem Class Reference
- QStyleOptionViewItemV2 Class Reference
- QStyleOptionViewItemV3 Class Reference
- QStyleOptionViewItemV4 Class Reference
- QStylePainter Class Reference
- QSvgGenerator Class Reference
- QSvgRenderer Class Reference
- QSvgWidget Class Reference
- QSwipeGesture Class Reference
- QSyntaxHighlighter Class Reference
- QSysInfo Class Reference
- QSystemLocale Class Reference
- QSystemSemaphore Class Reference
- QSystemTrayIcon Class Reference
- Qt Class Reference
- QTabBar Class Reference
- QTabletEvent Class Reference
- QTableView Class Reference
- QTableWidget Class Reference
- QTableWidgetItem Class Reference
- QTableWidgetSelectionRange Class Reference
- QTabWidget Class Reference
- QTapAndHoldGesture Class Reference
- QTapGesture Class Reference
- QTcpServer Class Reference
- QTcpSocket Class Reference
- QTemporaryFile Class Reference
- QTest Class Reference
- QTextBlock Class Reference
- QTextBlockFormat Class Reference
- QTextBlockGroup Class Reference
- QTextBlockUserData Class Reference
- QTextBoundaryFinder Class Reference
- QTextBrowser Class Reference
- QTextCharFormat Class Reference
- QTextCodec Class Reference
- QTextCursor Class Reference
- QTextDecoder Class Reference
- QTextDocument Class Reference
- QTextDocumentFragment Class Reference
- QTextDocumentWriter Class Reference
- QTextEdit Class Reference
- QTextEncoder Class Reference
- QTextFormat Class Reference
- QTextFragment Class Reference
- QTextFrame Class Reference
- QTextFrameFormat Class Reference
- QTextImageFormat Class Reference
- QTextInlineObject Class Reference
- QTextItem Class Reference
- QTextLayout Class Reference
- QTextLength Class Reference
- QTextLine Class Reference
- QTextList Class Reference
- QTextListFormat Class Reference
- QTextObject Class Reference
- QTextObjectInterface Class Reference
- QTextOption Class Reference
- QTextStream Class Reference
- QTextTable Class Reference
- QTextTableCell Class Reference
- QTextTableCellFormat Class Reference
- QTextTableFormat Class Reference
- QThread Class Reference
- QThreadPool Class Reference
- QTime Class Reference
- QTimeEdit Class Reference
- QTimeLine Class Reference
- QTimer Class Reference
- QTimerEvent Class Reference
- QToolBar Class Reference
- QToolBox Class Reference
- QToolButton Class Reference
- QToolTip Class Reference
- QTouchEvent Class Reference
- Reference
- QTransform Class Reference
- QTranslator Class Reference
- QTreeView Class Reference
- QTreeWidget Class Reference
- QTreeWidgetItem Class Reference
- QTreeWidgetItemIterator Class Reference
- QUdpSocket Class Reference
- QUndoCommand Class Reference
- QUndoGroup Class Reference
- QUndoStack Class Reference
- QUndoView Class Reference
- QUrl Class Reference
- QUrlInfo Class Reference
- QUuid Class Reference
- QValidator Class Reference
- QVariant Class Reference
- QVariantAnimation Class Reference
- QVBoxLayout Class Reference
- QVector2D Class Reference
- QVector3D Class Reference
- QVector4D Class Reference
- QVideoFrame Class Reference
- QVideoSurfaceFormat Class Reference
- QWaitCondition Class Reference
- QWebDatabase Class Reference
- QWebElement Class Reference
- QWebElementCollection Class Reference
- QWebFrame Class Reference
- QWebHistory Class Reference
- QWebHistoryInterface Class Reference
- QWebHistoryItem Class Reference
- QWebHitTestResult Class Reference
- QWebInspector Class Reference
- QWebPage Class Reference
- QWebPluginFactory Class Reference
- QWebSecurityOrigin Class Reference
- QWebSettings Class Reference
- QWebView Class Reference
- QWhatsThis Class Reference
- QWhatsThisClickedEvent Class Reference
- QWheelEvent Class Reference
- QWidget Class Reference
- QWidgetAction Class Reference
- QWidgetItem Class Reference
- QWindowStateChangeEvent Class Reference
- QWizard Class Reference
- QWizardPage Class Reference
- QWorkspace Class Reference
- QWriteLocker Class Reference
- QX11EmbedContainer Class Reference
- QX11EmbedWidget Class Reference
- QX11Info Class Reference
- QXmlAttributes Class Reference
- QXmlContentHandler Class Reference
- QXmlDeclHandler Class Reference
- QXmlDefaultHandler Class Reference
- QXmlDTDHandler Class Reference
- QXmlEntityResolver Class Reference
- QXmlErrorHandler Class Reference
- QXmlFormatter Class Reference
- QXmlInputSource Class Reference
- QXmlItem Class Reference
- QXmlLexicalHandler Class Reference
- QXmlLocator Class Reference
- QXmlName Class Reference
- QXmlNamePool Class Reference
- QXmlNamespaceSupport Class Reference
- QXmlNodeModelIndex Class Reference
- QXmlParseException Class Reference
- QXmlQuery Class Reference
- QXmlReader Class Reference
- QXmlResultItems Class Reference
- QXmlSchema Class Reference
- QXmlSchemaValidator Class Reference
- QXmlSerializer Class Reference
- QXmlSimpleReader Class Reference
- QXmlStreamAttribute Class Reference
- QXmlStreamAttributes Class Reference
- QXmlStreamEntityDeclaration Class Reference
- QXmlStreamEntityResolver Class Reference
- QXmlStreamNamespaceDeclaration Class Reference
- QXmlStreamNotationDeclaration Class Reference
- QXmlStreamReader Class Reference
- QXmlStreamWriter Class Reference