[PyQt] [Solved]Help displaying SQLite Database

[Extra]

Hello,

I'm trying to display my database on my TableWidgetItem in PyQt.

This is a snippet of my SQLite part of the code:

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#---------------------------------------------------------------------     self.loaddata()   def loaddata(self):     connection = sqlite3.connect("inventory.db")     cursor = connection.cursor()     cursor.execute('select * from items')       tablerow=0     results = cursor.fetchall()     self.tableWidget.setRowCount(40)     for row in results:         self.tableWidget.setItem(tablerow, 0, QtWidgets.QTableWidgetItem(row[0]))         self.tableWidget.setItem(tablerow, 1, QtWidgets.QTableWidgetItem(row[1]))         self.tableWidget.setItem(tablerow, 2, QtWidgets.QTableWidgetItem(row[2]))         tablerow+=1     connection.close()     #---------------------------------------------------------------------

But when I try to run my full script (shown below) I get an error saying there's no such table called 'items' (which is wrong because I already created the table and have some info loaded on it):

Error:
line 227, in loaddata
    cursor.execute('select * from items')
sqlite3.OperationalError: no such table: items

Am I displaying my SQLite database to my GUI properly? How Do I fix this error?


Any help would be greatly appreciated.

Thanks in advance.

Here's my full script right now:

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import sys from PyQt5 import QtWidgets from PyQt5.QtWidgets import (QApplication, QWidget, QPushButton, QMainWindow,                                 QLabel, QLineEdit, QTableWidget, QTableWidgetItem,                                 QGridLayout, QVBoxLayout, QSizePolicy, QSpacerItem) from PyQt5.QtCore import Qt, QMetaObject, QCoreApplication from PyQt5.QtGui import QFont import sqlite3     class Ui_MainDisplay(QMainWindow):     def __init__(self, parent = None):         super(Ui_MainDisplay, self).__init__(parent)         self.setObjectName("MainDisplay")         self.setGeometry(0, 0, 1123, 903)         self.setStyleSheet("background-color: rgb(0, 170, 255);")         self.centralwidget = QWidget(self)         self.centralwidget.setObjectName("centralwidget")         self.gridLayout = QGridLayout(self.centralwidget)         self.gridLayout.setObjectName("gridLayout")         self.verticalLayout = QVBoxLayout()         self.verticalLayout.setContentsMargins(-1, 0, -1, 0)         self.verticalLayout.setSpacing(6)         self.verticalLayout.setObjectName("verticalLayout")         self.AddItemButton = QPushButton(self.centralwidget)         font = QFont()         font.setPointSize(10)         font.setBold(True)         font.setWeight(75)         self.AddItemButton.setFont(font)         self.AddItemButton.setStyleSheet("background-color: rgb(85, 255, 0);\n" "border-style: outset;\n" "border-width: 2px;\n" "border-radius: 15px;\n" "border-color: black;\n" "padding: 4px;\n" "\n" "")         self.AddItemButton.setObjectName("AddItemButton")         self.verticalLayout.addWidget(self.AddItemButton)         self.DeleteItemButton = QPushButton(self.centralwidget)         font = QFont()         font.setPointSize(10)         font.setBold(True)         font.setWeight(75)         self.DeleteItemButton.setFont(font)         self.DeleteItemButton.setStyleSheet("background-color: rgb(255, 65, 68);\n" "border-style: outset;\n" "border-width: 2px;\n" "border-radius: 15px;\n" "border-color: black;\n" "padding: 4px;\n" "")         self.DeleteItemButton.setObjectName("DeleteItemButton")         self.verticalLayout.addWidget(self.DeleteItemButton)         self.CheckoutButton = QPushButton(self.centralwidget)         font = QFont()         font.setPointSize(10)         font.setBold(True)         font.setWeight(75)         self.CheckoutButton.setFont(font)         self.CheckoutButton.setStyleSheet("background-color: rgb(255, 255, 0);\n" "border-style: outset;\n" "border-width: 2px;\n" "border-radius: 15px;\n" "border-color: black;\n" "padding: 4px;\n" "")         self.CheckoutButton.setObjectName("CheckoutButton")         self.verticalLayout.addWidget(self.CheckoutButton)         self.ReturnButton = QPushButton(self.centralwidget)         font = QFont()         font.setPointSize(10)         font.setBold(True)         font.setWeight(75)         self.ReturnButton.setFont(font)         self.ReturnButton.setStyleSheet("background-color: rgb(255, 170, 32);\n" "border-style: outset;\n" "border-width: 2px;\n" "border-radius: 15px;\n" "border-color: black;\n" "padding: 4px;\n" "")         self.ReturnButton.setObjectName("ReturnButton")         self.verticalLayout.addWidget(self.ReturnButton)         self.ScanBarcodeButton = QPushButton(self.centralwidget)         font = QFont()         font.setPointSize(10)         font.setBold(True)         font.setWeight(75)         self.ScanBarcodeButton.setFont(font)         self.ScanBarcodeButton.setStyleSheet("background-color: rgb(211, 211, 211);\n" "border-style: outset;\n" "border-width: 2px;\n" "border-radius: 15px;\n" "border-color: black;\n" "padding: 4px;\n" "")         self.ScanBarcodeButton.setObjectName("ScanBarcodeButton")         self.verticalLayout.addWidget(self.ScanBarcodeButton)         self.MoreInfoButton = QPushButton(self.centralwidget)         font = QFont()         font.setPointSize(10)         font.setBold(True)         font.setWeight(75)         self.MoreInfoButton.setFont(font)         self.MoreInfoButton.setStyleSheet("background-color: rgb(196, 17, 255);\n" "border-style: outset;\n" "border-width: 2px;\n" "border-radius: 15px;\n" "border-color: black;\n" "padding: 4px;")         self.MoreInfoButton.setObjectName("MoreInfoButton")         self.verticalLayout.addWidget(self.MoreInfoButton)         self.RefreshButton = QPushButton(self.centralwidget)         font = QFont()         font.setPointSize(10)         font.setBold(True)         font.setWeight(75)         self.RefreshButton.setFont(font)         self.RefreshButton.setStyleSheet("background-color: rgb(0, 255, 255);\n" "border-style: outset;\n" "border-width: 2px;\n" "border-radius: 15px;\n" "border-color: black;\n" "padding: 4px;\n" "\n" "")         self.RefreshButton.setObjectName("RefreshButton")         self.verticalLayout.addWidget(self.RefreshButton)         spacerItem = QSpacerItem(20, 40, QSizePolicy.Policy.Minimum, QSizePolicy.Policy.Expanding)         self.verticalLayout.addItem(spacerItem)         self.LogoutButton = QPushButton(self.centralwidget)         font = QFont()         font.setPointSize(10)         font.setBold(True)         font.setWeight(75)         self.LogoutButton.setFont(font)         self.LogoutButton.setStyleSheet("background-color: rgb(255, 255, 255);\n" "border-style: outset;\n" "border-width: 2px;\n" "border-radius: 15px;\n" "border-color: black;\n" "padding: 4px;\n" "")         self.LogoutButton.setObjectName("LogoutButton")         self.verticalLayout.addWidget(self.LogoutButton)         self.gridLayout.addLayout(self.verticalLayout, 4, 3, 1, 1)         self.Header = QLabel(self.centralwidget)         font = QFont()         font.setPointSize(15)         font.setBold(True)         font.setWeight(75)         self.Header.setFont(font)         self.Header.setStyleSheet("background-color: rgb(0, 0, 0);\n" "color: rgb(255, 255, 255);\n" "border-style: outset;\n" "border-width: 2px;\n" "border-radius: 15px;\n" "border-color: black;\n" "padding: 4px;")         self.Header.setAlignment(Qt.AlignmentFlag.AlignCenter)         self.Header.setObjectName("Header")         self.gridLayout.addWidget(self.Header, 0, 1, 1, 3)         self.SearchButton = QPushButton(self.centralwidget)         font = QFont()         font.setPointSize(10)         font.setBold(True)         font.setWeight(75)         self.SearchButton.setFont(font)         self.SearchButton.setStyleSheet("background-color: rgb(211, 211, 211);\n" "border-style: outset;\n" "border-width: 2px;\n" "border-radius: 15px;\n" "border-color: black;\n" "padding: 4px;\n" "")         self.SearchButton.setObjectName("SearchButton")         self.gridLayout.addWidget(self.SearchButton, 2, 1, 1, 1)         self.SearchBar = QLineEdit(self.centralwidget)         self.SearchBar.setStyleSheet("background-color: rgb(255, 255, 255);")         self.SearchBar.setObjectName("SearchBar")         self.gridLayout.addWidget(self.SearchBar, 2, 2, 1, 1)         self.InventoryDisplay = QTableWidget(self.centralwidget)         font = QFont()         font.setBold(False)         font.setWeight(50)         self.InventoryDisplay.setFont(font)         self.InventoryDisplay.setStyleSheet("background-color: rgb(255, 255, 255);\n" "")         self.InventoryDisplay.setObjectName("InventoryDisplay")         self.InventoryDisplay.setColumnCount(11)         self.InventoryDisplay.setRowCount(0)         item = QTableWidgetItem()         self.InventoryDisplay.setHorizontalHeaderItem(0, item)         item = QTableWidgetItem()         self.InventoryDisplay.setHorizontalHeaderItem(1, item)         item = QTableWidgetItem()         self.InventoryDisplay.setHorizontalHeaderItem(2, item)         item = QTableWidgetItem()         self.InventoryDisplay.setHorizontalHeaderItem(3, item)         item = QTableWidgetItem()         self.InventoryDisplay.setHorizontalHeaderItem(4, item)         item = QTableWidgetItem()         self.InventoryDisplay.setHorizontalHeaderItem(5, item)         item = QTableWidgetItem()         self.InventoryDisplay.setHorizontalHeaderItem(6, item)         item = QTableWidgetItem()         self.InventoryDisplay.setHorizontalHeaderItem(7, item)         item = QTableWidgetItem()         self.InventoryDisplay.setHorizontalHeaderItem(8, item)         item = QTableWidgetItem()         self.InventoryDisplay.setHorizontalHeaderItem(9, item)         item = QTableWidgetItem()         self.InventoryDisplay.setHorizontalHeaderItem(10, item)         self.gridLayout.addWidget(self.InventoryDisplay, 4, 1, 1, 2)         self.setCentralWidget(self.centralwidget)         self.statusbar = self.statusBar()         self.statusbar.setObjectName("statusbar")         #self.setStatusBar(self.statusbar)                   #---------------------------------------------------------------------         self.loaddata()       def loaddata(self):         connection = sqlite3.connect("inventory.db")         cursor = connection.cursor()         cursor.execute('select * from items')           tablerow=0         results = cursor.fetchall()         self.tableWidget.setRowCount(40)         for row in results:             self.tableWidget.setItem(tablerow, 0, QtWidgets.QTableWidgetItem(row[0]))             self.tableWidget.setItem(tablerow, 1, QtWidgets.QTableWidgetItem(row[1]))             self.tableWidget.setItem(tablerow, 2, QtWidgets.QTableWidgetItem(row[2]))             tablerow+=1         connection.close()         #---------------------------------------------------------------------             self.retranslateUi(self)         QMetaObject.connectSlotsByName(self)         def retranslateUi(self, MainDisplay):         _translate = QCoreApplication.translate         self.setWindowTitle(_translate("MainDisplay", "AdminMenu"))         self.AddItemButton.setText(_translate("MainDisplay", "Add Item"))         self.DeleteItemButton.setText(_translate("MainDisplay", "Delete Item"))         self.CheckoutButton.setText(_translate("MainDisplay", "Check Out"))         self.ReturnButton.setText(_translate("MainDisplay", "Return"))         self.ScanBarcodeButton.setText(_translate("MainDisplay", "Scan Barcode"))         self.MoreInfoButton.setText(_translate("MainDisplay", "More Info"))         self.RefreshButton.setText(_translate("MainDisplay", "Refresh"))         self.LogoutButton.setText(_translate("MainDisplay", "Log Out"))         self.Header.setText(_translate("MainDisplay", "Admin Menu"))         self.SearchButton.setText(_translate("MainDisplay", "Search"))         item = self.InventoryDisplay.horizontalHeaderItem(0)         item.setText(_translate("MainDisplay", "ID"))         item = self.InventoryDisplay.horizontalHeaderItem(1)         item.setText(_translate("MainDisplay", "Name"))         item = self.InventoryDisplay.horizontalHeaderItem(2)         item.setText(_translate("MainDisplay", "Quantity"))         item = self.InventoryDisplay.horizontalHeaderItem(3)         item.setText(_translate("MainDisplay", "Price ($)"))         item = self.InventoryDisplay.horizontalHeaderItem(4)         item.setText(_translate("MainDisplay", "Sell Price ($)"))         item = self.InventoryDisplay.horizontalHeaderItem(5)         item.setText(_translate("MainDisplay", "Description"))         item = self.InventoryDisplay.horizontalHeaderItem(6)         item.setText(_translate("MainDisplay", "Category"))         item = self.InventoryDisplay.horizontalHeaderItem(7)         item.setText(_translate("MainDisplay", "Location"))         item = self.InventoryDisplay.horizontalHeaderItem(8)         item.setText(_translate("MainDisplay", "Length (Ft)"))         item = self.InventoryDisplay.horizontalHeaderItem(9)         item.setText(_translate("MainDisplay", "Barcode #"))         item = self.InventoryDisplay.horizontalHeaderItem(10)         item.setText(_translate("MainDisplay", "Date Updated"))   #---------------------------------------------------------------------------------------------------- #                                       Button Actions #----------------------------------------------------------------------------------------------------         #------------------------------------------                         #Logout Button         #------------------------------------------         #When the Logout button is clicked -> LogoutClicked Function         LogoutButton = self.LogoutButton         LogoutButton.clicked.connect(self.LogoutClicked)         #------------------------------------------         #------------------------------------------                         #Add Item Button         #------------------------------------------         #When the AddItem button is clicked -> AddItem Function         AddItemButton = self.AddItemButton         AddItemButton.clicked.connect(self.AddItemClicked)         #------------------------------------------         #------------------------------------------                      #Remove Item Button         #------------------------------------------         #When the RemoveItem button is clicked -> RemoveItem Function         RemoveItemButton = self.DeleteItemButton         RemoveItemButton.clicked.connect(self.RemoveItemClicked)         #------------------------------------------         #------------------------------------------                      #Checkout Item Button         #------------------------------------------         #When the Checkout button is clicked -> Checkout Function         CheckoutButton = self.CheckoutButton         CheckoutButton.clicked.connect(self.CheckoutClicked)         #------------------------------------------         #------------------------------------------                      #Return Item Button         #------------------------------------------         #When the Return button is clicked -> Return Function         ReturnButton = self.ReturnButton         ReturnButton.clicked.connect(self.ReturnClicked)         #------------------------------------------         #------------------------------------------                      #Scan Barcode Button         #------------------------------------------         #When the Scan Barcode button is clicked -> ScanBarcode Function         ScanBarcodeButton = self.ScanBarcodeButton         ScanBarcodeButton.clicked.connect(self.ScanBarcodeClicked)         #------------------------------------------         #------------------------------------------                      #More Info Button         #------------------------------------------         #When the More Info button is clicked -> MoreInfo Function         MoreInfoButton = self.MoreInfoButton         MoreInfoButton.clicked.connect(self.MoreInfoClicked)         #------------------------------------------         #------------------------------------------                      #Refresh Button         #------------------------------------------         #When the More Info button is clicked -> MoreInfo Function         RefreshButton = self.RefreshButton         RefreshButton.clicked.connect(self.RefreshClicked)         #------------------------------------------         #------------------------------------------                      #Search Button         #------------------------------------------         #When the More Info button is clicked -> MoreInfo Function         SearchButton = self.SearchButton         SearchButton.clicked.connect(self.SearchClicked)         #------------------------------------------ #----------------------------------     #Logout Function     def LogoutClicked(self):         #Print in terminal for testing:         print("The Logout Button was clicked")         #Switch from this screen to the LoginScreen         #(Import LoginScreen here to prevent circular import error)         from LoginScreen import Ui_Loginscreen         self.win = Ui_Loginscreen() #Define LoginScreen         self.win.show() #Show Login Screen         self.close() #Close this screen (AdminMenu) #---------------------------------- #----------------------------------     #AddItem Function     def AddItemClicked(self):         #Print in terminal for testing:         print("The Add Item Button was clicked") #---------------------------------- #----------------------------------     #RemoveItem Function     def RemoveItemClicked(self):         #Print in terminal for testing:         print("The Delete Item Button was clicked") #---------------------------------- #----------------------------------     #Checkout Function     def CheckoutClicked(self):         #Print in terminal for testing:         print("The Checkout Button was clicked") #---------------------------------- #----------------------------------     #Return Function     def ReturnClicked(self):         #Print in terminal for testing:         print("The Return Button was clicked") #---------------------------------- #----------------------------------     #ScanBarcode Function     def ScanBarcodeClicked(self):         #Print in terminal for testing:         print("The Scan Barcode Button was clicked") #---------------------------------- #----------------------------------     #MoreInfo Function     def MoreInfoClicked(self):         #Print in terminal for testing:         print("The More Info Button was clicked") #---------------------------------- #----------------------------------     #Refresh Function     def RefreshClicked(self):         #Print in terminal for testing:         print("The Refresh Button was clicked") #---------------------------------- #----------------------------------     #Search Function     def SearchClicked(self):         #Print in terminal for testing:         print("The Search Button was clicked") #---------------------------------- #----------------------------------------------------------------------------------------------------      if __name__ == '__main__':     app = QApplication(sys.argv)     win = Ui_MainDisplay()     win.show()         sys.exit(app.exec_())

[Axel_Erfurt]

Your database has no table items.

Here's an old example I made a few years ago. There you can select the table via ComboBox.

https://gist.github.com/Axel-Erfurt/ae98...a83a00014a

[Extra]

I tried adding WHERE type = table to my SELECT statement to be more specific but I get the same error.

My table is populated so I don't know what you mean by

Your database has no table items.

could you please clarify what you mean by that?

Here's the table (called items) that was created:

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import sqlite3   def createDatabase():         #Create a database (inventory.db)         connection = sqlite3.connect("inventory.db")         cursor = connection.cursor()           table = """CREATE TABLE IF NOT EXISTS items                 (ID INTEGER PRIMARY KEY  AUTOINCREMENT,                 NAME           TEXT    NOT NULL,                 Quantity       INT     NOT NULL,                 Price          DOUBLE  NOT NULL,                 Sell_Price     DOUBLE,                 Description    TEXT,                 Category       TEXT,                 Location       TEXT    NOT NULL,                 Length_Ft      INT,                 Barcode        INT,                 Image          BLOB,                 Date Updated   datetime default current_timestamp);"""           #Execute the creation of the table         cursor.execute(table)         #print("The database has been created")         #Commit the changes         connection.commit()         #Close the connection         connection.close()

[theboostra1]

voip phone I’ve been searching for some decent stuff on the subject and haven't had any luck up until this point, You just got a new biggest fan!..

[Axel_Erfurt]

Here's the table (called items) that was created:

Ok, that works for me after changing self.tableWidget to self.InventoryDisplay in loaddata

self.tableWidget was never defined

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def loaddata(self):     connection = sqlite3.connect("inventory.db")     cursor = connection.cursor()     cursor.execute('select * from items')        tablerow=0     results = cursor.fetchall()     self.InventoryDisplay.setRowCount(40)     for row in results:         self.InventoryDisplay.setItem(tablerow, 0, QtWidgets.QTableWidgetItem(row[0]))         self.InventoryDisplay.setItem(tablerow, 1, QtWidgets.QTableWidgetItem(row[1]))         self.InventoryDisplay.setItem(tablerow, 2, QtWidgets.QTableWidgetItem(row[2]))         tablerow+=1     connection.close()     #---------------------------------------------------------------------          self.retranslateUi(self)     QMetaObject.connectSlotsByName(self)

[Axel_Erfurt]

Another thing I noticed is that you don't have to insert line endings in stylesheet. You can write it like this.

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self.AddItemButton.setStyleSheet("""background-color: rgb(85, 255, 0);                                     border-style: outset;                                     border-width: 2px;                                     border-radius: 15px;                                     border-color: black;                                     padding: 4px;""")

[Larz60+]

FYI:

If you have any need for an SQLite database editor/viewer for use outside of your code, I'd recommend Db Browser: https://sqlitebrowser.org/
There may be a better one available, but this is simple, free, and complete.

[Extra]

Here's the table (called items) that was created:

Ok, that works for me after changing self.tableWidget to self.InventoryDisplay in loaddata

self.tableWidget was never defined

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def loaddata(self):     connection = sqlite3.connect("inventory.db")     cursor = connection.cursor()     cursor.execute('select * from items')        tablerow=0     results = cursor.fetchall()     self.InventoryDisplay.setRowCount(40)     for row in results:         self.InventoryDisplay.setItem(tablerow, 0, QtWidgets.QTableWidgetItem(row[0]))         self.InventoryDisplay.setItem(tablerow, 1, QtWidgets.QTableWidgetItem(row[1]))         self.InventoryDisplay.setItem(tablerow, 2, QtWidgets.QTableWidgetItem(row[2]))         tablerow+=1     connection.close()     #---------------------------------------------------------------------          self.retranslateUi(self)     QMetaObject.connectSlotsByName(self)

Thanks, that got my table to display. The only problem is that just the item's name is displayed there is other other information there even through there's supposed to be.

For ex I added the following info to the items table:
NAME MG996R
Quantity 10
Price 5
Sell_Price 6
Description A Servo
Category Servos
Location S-1
Length_Ft
Barcode
Image
Date Updated

But all I get outputted to the table is the item Name:
MG996R
Nothing else.


My question is, why isn't the other info showing?

[Axel_Erfurt]

try this

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def loaddata(self):     connection = sqlite3.connect("inventory.db")     cursor = connection.cursor()     cursor.execute('select * from items')     row = 0     self.InventoryDisplay.setRowCount(40)     while True:         form = cursor.fetchone()         if form == None:             break         for column, item in enumerate(form):             self.InventoryDisplay.setItem(row, column, QTableWidgetItem(str(item)))             print(str(item))         row += 1     connection.close()     #---------------------------------------------------------------------               self.retranslateUi(self)     QMetaObject.connectSlotsByName(self)

[Extra]

Thanks that worked!