How is the ! used in Microsoft Access queries?

The "bang" or exclamation point is a logical operator. Just to follow up on a previous question , is it problematic to use "!" with Microsoft Access queries to specify tables and columns? And, why? From copilot: > you show me more examples? Copilot Using the web Certainly! Here are > some additional examples illustrating the usage of exclamation marks > (!) in Microsoft Access queries: > > Calculations with Form Controls: Suppose you have a form named > frmSales with two textboxes: txtQuantity and txtUnitPrice. You want to > calculate the total price based on user input. You can create a query > like this: SQL SELECT [frmSales]![txtQuantity] AS Quantity, [frmSales]![txtUnitPrice] AS UnitPrice, [frmSales]![txtQuantity] * [frmSales]![txtUnitPrice] AS TotalPrice FROM SomeTable; > AI-generated code. Review and use carefully. More info on FAQ. In > this query, [frmSales]![txtQuantity] and [frmSales]![txtUnitPrice] > refer to the values entered by the user in the respective textboxes. > Filtering Based on Form Controls: Let’s say you have a form named > frmFilters with checkboxes for filtering data. You want to retrieve > records based on the user’s selections. You can construct a query like > this: SQL SELECT * FROM Orders WHERE [frmFilters]![chkHighPriority] = True AND [frmFilters]![chkShipped] = False; > AI-generated code. Review and use carefully. More info on FAQ. Here, [frmFilters]![chkHighPriority] and [frmFilters]![chkShipped] > correspond to the checkbox values set by the user. Joining Tables with > Form Controls: If you have a form that allows users to select criteria > for joining tables, you can use exclamation marks to reference those > selections. For instance: SQL SELECT Customers.CustomerName, Orders.OrderDate FROM Customers INNER JOIN Orders ON Customers.CustomerID = Orders.CustomerID WHERE [frmJoinCriteria]![cboOrderStatus] = 'Shipped'; > AI-generated code. Review and use carefully. More info on FAQ. In > this query, [frmJoinCriteria]![cboOrderStatus] represents the user’s > choice from a combo box on the form. Remember that the exclamation > mark simplifies referencing frontend objects within your queries, > making your Access applications more dynamic and interactive. 😊 From what I can see, the ! has a specific meaning in Access, but no meaning in SQL, aside from being a logical operator.