Class: QgsQueryBuilder¶
-
class
qgis.gui.
QgsQueryBuilder
(layer: QgsVectorLayer, parent: QWidget = None, fl: Union[Qt.WindowFlags, Qt.WindowType] = QgsGuiUtils.ModalDialogFlags)¶ Bases:
PyQt5.QtWidgets.QDialog
This constructor is used when the query builder is called from the vector layer properties dialog
- Parameters
layer – existing vector layer
parent – Parent widget
fl – dialog flags
Query Builder for layers.
The query builder allows interactive creation of a SQL for limiting the features displayed in a vector layer. The fields in the table are displayed and sample values (or all values) can be viewed to aid in constructing the query. A test function returns the number of features that will be returned.
Enums
Methods
Test the constructed sql statement to see if the vector layer data provider likes it.
Signals
Attributes
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accept
(self)¶
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actionEvent
()¶
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changeEvent
()¶
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childEvent
()¶
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clear
(self)¶
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closeEvent
()¶
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connectNotify
()¶
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contextMenuEvent
()¶
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create
()¶
-
customEvent
()¶
-
destroy
()¶
-
disconnectNotify
()¶
-
dragEnterEvent
()¶
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dragLeaveEvent
()¶
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dragMoveEvent
()¶
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dropEvent
()¶
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enterEvent
()¶
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event
()¶
-
eventFilter
()¶
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focusInEvent
()¶
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focusNextChild
()¶
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focusNextPrevChild
()¶
-
focusOutEvent
()¶
-
focusPreviousChild
()¶
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hideEvent
()¶
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initPainter
()¶
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inputMethodEvent
()¶
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isSignalConnected
()¶
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keyPressEvent
()¶
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keyReleaseEvent
()¶
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leaveEvent
()¶
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metric
()¶
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mouseDoubleClickEvent
()¶
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mouseMoveEvent
()¶
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mousePressEvent
()¶
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mouseReleaseEvent
()¶
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moveEvent
()¶
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nativeEvent
()¶
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paintEvent
()¶
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receivers
()¶
-
reject
(self)¶
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resizeEvent
()¶
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sender
()¶
-
senderSignalIndex
()¶
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setDatasourceDescription
(self, uri: str)¶
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setSql
(self, sqlStatement: str)¶
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showEvent
(self, event: QShowEvent)¶
-
sql
(self) → str¶
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tabletEvent
()¶
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test
(self)¶ Test the constructed sql statement to see if the vector layer data provider likes it. The number of rows that would be returned is displayed in a message box. The test uses a “select count(*) from …” query to test the SQL statement.
-
timerEvent
()¶
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updateMicroFocus
()¶
-
wheelEvent
()¶