如何连接一个 sqlite table 中的三个字段记录并将其插入到第二个 table 的一个字段中？
How to concatenate three feilds records from one sqlite table and insert that in to one feild of the second table?
下面是我的示例代码：
from PyQt5 import QtCore, QtGui, QtWidgets, QtSql
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtSql import *
import sys
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(800, 600)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.details_tableview = QtWidgets.QTableView(self.centralwidget)
self.details_tableview.setGeometry(QtCore.QRect(30, 220, 381, 271))
self.details_tableview.setObjectName("details_tableview")
self.full_tableview = QtWidgets.QTableView(self.centralwidget)
self.full_tableview.setGeometry(QtCore.QRect(440, 220, 341, 271))
self.full_tableview.setObjectName("full_tableview")
self.title_combo = QtWidgets.QComboBox(self.centralwidget)
self.title_combo.setGeometry(QtCore.QRect(164, 41, 69, 20))
self.title_combo.setObjectName("title_combo")
self.title_combo.addItem("")
self.title_combo.setItemText(0, "")
self.title_combo.addItem("")
self.title_combo.addItem("")
self.save_btn = QtWidgets.QPushButton(self.centralwidget)
self.save_btn.setGeometry(QtCore.QRect(100, 180, 75, 23))
self.save_btn.setObjectName("save_btn")
self.first_name_line = QtWidgets.QLineEdit(self.centralwidget)
self.first_name_line.setGeometry(QtCore.QRect(164, 67, 133, 20))
self.first_name_line.setObjectName("first_name_line")
self.lastNameLabel = QtWidgets.QLabel(self.centralwidget)
self.lastNameLabel.setGeometry(QtCore.QRect(102, 93, 50, 16))
self.lastNameLabel.setObjectName("lastNameLabel")
self.last_name_line = QtWidgets.QLineEdit(self.centralwidget)
self.last_name_line.setGeometry(QtCore.QRect(164, 93, 133, 20))
self.last_name_line.setObjectName("last_name_line")
self.designationLabel = QtWidgets.QLabel(self.centralwidget)
self.designationLabel.setGeometry(QtCore.QRect(102, 145, 56, 16))
self.designationLabel.setObjectName("designationLabel")
self.mobileLabel = QtWidgets.QLabel(self.centralwidget)
self.mobileLabel.setGeometry(QtCore.QRect(102, 119, 30, 16))
self.mobileLabel.setObjectName("mobileLabel")
self.desig_line = QtWidgets.QLineEdit(self.centralwidget)
self.desig_line.setGeometry(QtCore.QRect(164, 145, 133, 20))
self.desig_line.setObjectName("desig_line")
self.mobile_line = QtWidgets.QLineEdit(self.centralwidget)
self.mobile_line.setGeometry(QtCore.QRect(164, 119, 133, 20))
self.mobile_line.setObjectName("mobile_line")
self.firstNameLabel = QtWidgets.QLabel(self.centralwidget)
self.firstNameLabel.setGeometry(QtCore.QRect(102, 67, 51, 16))
self.firstNameLabel.setObjectName("firstNameLabel")
self.tilteLabel = QtWidgets.QLabel(self.centralwidget)
self.tilteLabel.setGeometry(QtCore.QRect(102, 41, 20, 16))
self.tilteLabel.setObjectName("tilteLabel")
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 21))
self.menubar.setObjectName("menubar")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.mobile_line.setValidator(QIntValidator())
self.save_btn.clicked.connect(self.save_data)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
db = QtSql.QSqlDatabase.addDatabase("QSQLITE")
db.setDatabaseName("employee.db")
if db.open():
query = QSqlQuery()
query.exec_("CREATE TABLE IF NOT EXISTS details(title TEXT, first_name TEXT, last_name TEXT, mobile TEXT, designation TEXT)")
query.exec_("CREATE TABLE IF NOT EXISTS view(full name TEXT, mobile TEXT, designation TEXT)")
self.emp_model = QtSql.QSqlTableModel()
self.emp_model.setTable("details")
self.emp_model.select()
self.details_tableview.setModel(self.emp_model)
self.view_model = QtSql.QSqlTableModel()
self.view_model.setTable("view")
self.view_model.select()
self.full_tableview.setModel(self.view_model)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.title_combo.setItemText(1, _translate("MainWindow", "Mr."))
self.title_combo.setItemText(2, _translate("MainWindow", "Ms."))
self.save_btn.setText(_translate("MainWindow", "Save"))
self.lastNameLabel.setText(_translate("MainWindow", "Last Name"))
self.designationLabel.setText(_translate("MainWindow", "Designation"))
self.mobileLabel.setText(_translate("MainWindow", "Mobile"))
self.firstNameLabel.setText(_translate("MainWindow", "First Name"))
self.tilteLabel.setText(_translate("MainWindow", "Tilte"))
def save_data(self):
data_ = [self.title_combo.currentText(), self.first_name_line.text(), self.last_name_line.text(), self.mobile_line.text(), self.desig_line.text()]
print(data_)
r = self.emp_model.record()
r.setValue("title", self.title_combo.currentText())
r.setValue("first_name", self.first_name_line.text())
r.setValue("last_name", self.last_name_line.text())
r.setValue("mobile", self.mobile_line.text())
r.setValue("designation", self.desig_line.text())
self.emp_model.insertRecord(-1, r)
self.emp_model.select()
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())
我正在使用 QtSql.QSqlTableModel、QSqlQuery()、QTableView。
是否可以将所需的列数据从一个 table 连接到第二个 table 列。例如，在第一个 table 中有五列，我需要将“标题”、“名字”和“姓氏”连接为“全名”，并且应该将其插入到“全名”列中进入第二个table。并且需要将第一个 table 的“移动”列值插入第二个 table 的“移动”列，并将第一个 table 的“指定”列插入第二个 [=19] 的“指定”列=].如果可以，怎么办？如果有任何解决方案会有所帮助。
请找到图片以供参考。
如果您想在 table 的行之间创建绑定，那么一个可能的解决方案是在 table 的修改（插入、更新或删除）之前创建触发器other table 已修改。
from PyQt5 import QtWidgets, QtSql
queries = (
"""
CREATE TABLE IF NOT EXISTS details(
title TEXT,
first_name TEXT,
last_name TEXT,
mobile TEXT,
designation TEXT
)""",
"""
CREATE TABLE IF NOT EXISTS view(
full name TEXT,
mobile TEXT,
designation TEXT)
""",
"""
CREATE TRIGGER IF NOT EXISTS after_insert_details
AFTER INSERT
ON details
BEGIN
INSERT INTO view(full, mobile, designation)
VALUES(NEW.first_name || " " ||New.last_name , NEW.mobile, NEW.designation);
END;""",
"""
CREATE TRIGGER IF NOT EXISTS after_update_details
AFTER UPDATE
ON details
BEGIN
UPDATE view
SET full = NEW.first_name || " " ||New.last_name , mobile = NEW.mobile, designation = NEW.designation
WHERE NEW.rowid = rowid;
END;
""",
"""
CREATE TRIGGER IF NOT EXISTS after_delete_details
AFTER DELETE
ON details
BEGIN
DELETE FROM view
WHERE OLD.rowid = rowid;
END;
"""
)
def create_connection():
db = QtSql.QSqlDatabase.addDatabase("QSQLITE")
db.setDatabaseName("employee.db")
if not db.open():
print(db.lastError().text())
return False
return True
class ReadOnlyDelegate(QtWidgets.QStyledItemDelegate):
def createEditor(self, parent, option, index):
pass
class MainWindow(QtWidgets.QMainWindow):
def __init__(self, parent=None):
super().__init__(parent)
self.title_combo = QtWidgets.QComboBox()
self.title_combo.addItems(["Mr.", "Ms."])
self.first_name_line = QtWidgets.QLineEdit()
self.last_name_line = QtWidgets.QLineEdit()
self.mobile_line = QtWidgets.QLineEdit()
self.desig_line = QtWidgets.QLineEdit()
self.save_btn = QtWidgets.QPushButton("Save")
self.detail_view = QtWidgets.QTableView()
self.detail_model = QtSql.QSqlTableModel()
self.detail_model.setTable("details")
self.detail_model.select()
self.detail_view.setModel(self.detail_model)
self.table_view = QtWidgets.QTableView()
self.view_model = QtSql.QSqlTableModel()
self.view_model.setTable("view")
self.view_model.select()
self.table_view.setModel(self.view_model)
self.table_view.setItemDelegate(ReadOnlyDelegate(self.table_view))
form_widget = QtWidgets.QWidget()
form_layout = QtWidgets.QFormLayout(form_widget)
form_layout.addRow("Title", self.title_combo)
form_layout.addRow("First Name", self.first_name_line)
form_layout.addRow("Last Name", self.last_name_line)
form_layout.addRow("Mobile", self.mobile_line)
form_layout.addRow("Designation", self.desig_line)
form_layout.addRow(self.save_btn)
form_widget.setFixedSize(form_widget.sizeHint())
central_widget = QtWidgets.QWidget()
self.setCentralWidget(central_widget)
hlay1 = QtWidgets.QHBoxLayout()
hlay1.addWidget(form_widget)
hlay1.addStretch()
hlay2 = QtWidgets.QHBoxLayout()
hlay2.addWidget(self.detail_view)
hlay2.addWidget(self.table_view)
vboxlayout = QtWidgets.QVBoxLayout(central_widget)
vboxlayout.addLayout(hlay1)
vboxlayout.addLayout(hlay2)
self.resize(640, 480)
self.save_btn.clicked.connect(self.insert_row)
def insert_row(self):
r = self.detail_model.record()
r.setValue("title", self.title_combo.currentText())
r.setValue("first_name", self.first_name_line.text())
r.setValue("last_name", self.last_name_line.text())
r.setValue("mobile", self.mobile_line.text())
r.setValue("designation", self.desig_line.text())
self.detail_model.insertRecord(-1, r)
self.detail_model.select()
self.view_model.select()
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
if not create_connection():
sys.exit(-1)
for query_str in queries:
query = QtSql.QSqlQuery(query_str)
if not query.exec_():
print(query.lastError().text())
w = MainWindow()
w.show()
sys.exit(app.exec_())
下面是我的示例代码：
from PyQt5 import QtCore, QtGui, QtWidgets, QtSql
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtSql import *
import sys
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(800, 600)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.details_tableview = QtWidgets.QTableView(self.centralwidget)
self.details_tableview.setGeometry(QtCore.QRect(30, 220, 381, 271))
self.details_tableview.setObjectName("details_tableview")
self.full_tableview = QtWidgets.QTableView(self.centralwidget)
self.full_tableview.setGeometry(QtCore.QRect(440, 220, 341, 271))
self.full_tableview.setObjectName("full_tableview")
self.title_combo = QtWidgets.QComboBox(self.centralwidget)
self.title_combo.setGeometry(QtCore.QRect(164, 41, 69, 20))
self.title_combo.setObjectName("title_combo")
self.title_combo.addItem("")
self.title_combo.setItemText(0, "")
self.title_combo.addItem("")
self.title_combo.addItem("")
self.save_btn = QtWidgets.QPushButton(self.centralwidget)
self.save_btn.setGeometry(QtCore.QRect(100, 180, 75, 23))
self.save_btn.setObjectName("save_btn")
self.first_name_line = QtWidgets.QLineEdit(self.centralwidget)
self.first_name_line.setGeometry(QtCore.QRect(164, 67, 133, 20))
self.first_name_line.setObjectName("first_name_line")
self.lastNameLabel = QtWidgets.QLabel(self.centralwidget)
self.lastNameLabel.setGeometry(QtCore.QRect(102, 93, 50, 16))
self.lastNameLabel.setObjectName("lastNameLabel")
self.last_name_line = QtWidgets.QLineEdit(self.centralwidget)
self.last_name_line.setGeometry(QtCore.QRect(164, 93, 133, 20))
self.last_name_line.setObjectName("last_name_line")
self.designationLabel = QtWidgets.QLabel(self.centralwidget)
self.designationLabel.setGeometry(QtCore.QRect(102, 145, 56, 16))
self.designationLabel.setObjectName("designationLabel")
self.mobileLabel = QtWidgets.QLabel(self.centralwidget)
self.mobileLabel.setGeometry(QtCore.QRect(102, 119, 30, 16))
self.mobileLabel.setObjectName("mobileLabel")
self.desig_line = QtWidgets.QLineEdit(self.centralwidget)
self.desig_line.setGeometry(QtCore.QRect(164, 145, 133, 20))
self.desig_line.setObjectName("desig_line")
self.mobile_line = QtWidgets.QLineEdit(self.centralwidget)
self.mobile_line.setGeometry(QtCore.QRect(164, 119, 133, 20))
self.mobile_line.setObjectName("mobile_line")
self.firstNameLabel = QtWidgets.QLabel(self.centralwidget)
self.firstNameLabel.setGeometry(QtCore.QRect(102, 67, 51, 16))
self.firstNameLabel.setObjectName("firstNameLabel")
self.tilteLabel = QtWidgets.QLabel(self.centralwidget)
self.tilteLabel.setGeometry(QtCore.QRect(102, 41, 20, 16))
self.tilteLabel.setObjectName("tilteLabel")
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 21))
self.menubar.setObjectName("menubar")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.mobile_line.setValidator(QIntValidator())
self.save_btn.clicked.connect(self.save_data)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
db = QtSql.QSqlDatabase.addDatabase("QSQLITE")
db.setDatabaseName("employee.db")
if db.open():
query = QSqlQuery()
query.exec_("CREATE TABLE IF NOT EXISTS details(title TEXT, first_name TEXT, last_name TEXT, mobile TEXT, designation TEXT)")
query.exec_("CREATE TABLE IF NOT EXISTS view(full name TEXT, mobile TEXT, designation TEXT)")
self.emp_model = QtSql.QSqlTableModel()
self.emp_model.setTable("details")
self.emp_model.select()
self.details_tableview.setModel(self.emp_model)
self.view_model = QtSql.QSqlTableModel()
self.view_model.setTable("view")
self.view_model.select()
self.full_tableview.setModel(self.view_model)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.title_combo.setItemText(1, _translate("MainWindow", "Mr."))
self.title_combo.setItemText(2, _translate("MainWindow", "Ms."))
self.save_btn.setText(_translate("MainWindow", "Save"))
self.lastNameLabel.setText(_translate("MainWindow", "Last Name"))
self.designationLabel.setText(_translate("MainWindow", "Designation"))
self.mobileLabel.setText(_translate("MainWindow", "Mobile"))
self.firstNameLabel.setText(_translate("MainWindow", "First Name"))
self.tilteLabel.setText(_translate("MainWindow", "Tilte"))
def save_data(self):
data_ = [self.title_combo.currentText(), self.first_name_line.text(), self.last_name_line.text(), self.mobile_line.text(), self.desig_line.text()]
print(data_)
r = self.emp_model.record()
r.setValue("title", self.title_combo.currentText())
r.setValue("first_name", self.first_name_line.text())
r.setValue("last_name", self.last_name_line.text())
r.setValue("mobile", self.mobile_line.text())
r.setValue("designation", self.desig_line.text())
self.emp_model.insertRecord(-1, r)
self.emp_model.select()
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())
我正在使用 QtSql.QSqlTableModel、QSqlQuery()、QTableView。
是否可以将所需的列数据从一个 table 连接到第二个 table 列。例如，在第一个 table 中有五列，我需要将“标题”、“名字”和“姓氏”连接为“全名”，并且应该将其插入到“全名”列中进入第二个table。并且需要将第一个 table 的“移动”列值插入第二个 table 的“移动”列，并将第一个 table 的“指定”列插入第二个 [=19] 的“指定”列=].如果可以，怎么办？如果有任何解决方案会有所帮助。
请找到图片以供参考。
如果您想在 table 的行之间创建绑定，那么一个可能的解决方案是在 table 的修改（插入、更新或删除）之前创建触发器other table 已修改。
from PyQt5 import QtWidgets, QtSql
queries = (
"""
CREATE TABLE IF NOT EXISTS details(
title TEXT,
first_name TEXT,
last_name TEXT,
mobile TEXT,
designation TEXT
)""",
"""
CREATE TABLE IF NOT EXISTS view(
full name TEXT,
mobile TEXT,
designation TEXT)
""",
"""
CREATE TRIGGER IF NOT EXISTS after_insert_details
AFTER INSERT
ON details
BEGIN
INSERT INTO view(full, mobile, designation)
VALUES(NEW.first_name || " " ||New.last_name , NEW.mobile, NEW.designation);
END;""",
"""
CREATE TRIGGER IF NOT EXISTS after_update_details
AFTER UPDATE
ON details
BEGIN
UPDATE view
SET full = NEW.first_name || " " ||New.last_name , mobile = NEW.mobile, designation = NEW.designation
WHERE NEW.rowid = rowid;
END;
""",
"""
CREATE TRIGGER IF NOT EXISTS after_delete_details
AFTER DELETE
ON details
BEGIN
DELETE FROM view
WHERE OLD.rowid = rowid;
END;
"""
)
def create_connection():
db = QtSql.QSqlDatabase.addDatabase("QSQLITE")
db.setDatabaseName("employee.db")
if not db.open():
print(db.lastError().text())
return False
return True
class ReadOnlyDelegate(QtWidgets.QStyledItemDelegate):
def createEditor(self, parent, option, index):
pass
class MainWindow(QtWidgets.QMainWindow):
def __init__(self, parent=None):
super().__init__(parent)
self.title_combo = QtWidgets.QComboBox()
self.title_combo.addItems(["Mr.", "Ms."])
self.first_name_line = QtWidgets.QLineEdit()
self.last_name_line = QtWidgets.QLineEdit()
self.mobile_line = QtWidgets.QLineEdit()
self.desig_line = QtWidgets.QLineEdit()
self.save_btn = QtWidgets.QPushButton("Save")
self.detail_view = QtWidgets.QTableView()
self.detail_model = QtSql.QSqlTableModel()
self.detail_model.setTable("details")
self.detail_model.select()
self.detail_view.setModel(self.detail_model)
self.table_view = QtWidgets.QTableView()
self.view_model = QtSql.QSqlTableModel()
self.view_model.setTable("view")
self.view_model.select()
self.table_view.setModel(self.view_model)
self.table_view.setItemDelegate(ReadOnlyDelegate(self.table_view))
form_widget = QtWidgets.QWidget()
form_layout = QtWidgets.QFormLayout(form_widget)
form_layout.addRow("Title", self.title_combo)
form_layout.addRow("First Name", self.first_name_line)
form_layout.addRow("Last Name", self.last_name_line)
form_layout.addRow("Mobile", self.mobile_line)
form_layout.addRow("Designation", self.desig_line)
form_layout.addRow(self.save_btn)
form_widget.setFixedSize(form_widget.sizeHint())
central_widget = QtWidgets.QWidget()
self.setCentralWidget(central_widget)
hlay1 = QtWidgets.QHBoxLayout()
hlay1.addWidget(form_widget)
hlay1.addStretch()
hlay2 = QtWidgets.QHBoxLayout()
hlay2.addWidget(self.detail_view)
hlay2.addWidget(self.table_view)
vboxlayout = QtWidgets.QVBoxLayout(central_widget)
vboxlayout.addLayout(hlay1)
vboxlayout.addLayout(hlay2)
self.resize(640, 480)
self.save_btn.clicked.connect(self.insert_row)
def insert_row(self):
r = self.detail_model.record()
r.setValue("title", self.title_combo.currentText())
r.setValue("first_name", self.first_name_line.text())
r.setValue("last_name", self.last_name_line.text())
r.setValue("mobile", self.mobile_line.text())
r.setValue("designation", self.desig_line.text())
self.detail_model.insertRecord(-1, r)
self.detail_model.select()
self.view_model.select()
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
if not create_connection():
sys.exit(-1)
for query_str in queries:
query = QtSql.QSqlQuery(query_str)
if not query.exec_():
print(query.lastError().text())
w = MainWindow()
w.show()
sys.exit(app.exec_())