![]() However, if you do use the special characters, you may experience unexpected errors. Microsoft Access does not restrict the use of special characters such as a number sign (#), a period (.), or a quotation mark (") in the database object names or in the database field names. Typically, this problem occurs when you use the following special characters: When you run the query, you are promoted to enter a parameter value. The query expressions include fields that contain special characters. You have a query that contains query expressions. The expression you entered is missing a closing parenthesis, bracket (]), or vertical bar(|). If the field name contains a bracket () or parenthesis (()), you receive the following error message: Malformed GUID in query expression ' ObjectName' If the field name contains a brace (), you receive the following error message: You omitted an operand or operator, you entered an invalid character or comma, or you entered text without surrounding it in quotation marks. If the field name contains a percent sign (%), a tilde (~), a semicolon ( ), or a bracket (), you receive the following error message: The expression you entered has an invalid date value. If the field name contains a number sign (#), you receive the following error message: The Expression you entered has an invalid string.Ī string can be up to 2048 characters long, including opening and closing quotation marks. ![]() ![]() If the field name contains a quotation mark(") or an apostrophe('), you receive the following error message: You may have entered an operand without an operator The Expression you entered contains invalid syntax. If the field name contains a space character, a question mark (?), or an at sign you receive the following error message: Depending on the specific special characters, you receive one of the following error messages: The query expression includes fields that contains special characters. The object name ' TableName' you entered doesn't follow Microsoft Office Access object-naming rules. If you use these special characters in a table name, you receive the following error message: If you have pasted the name from another application, try pressing ESC and typing the name again. Make sure that the name doesn't contain a period(.), exclamation point(!), bracket(), leading space, or non-printable character such as a carriage return. In this case, you receive the following error message: You use one of the following special characters in the name of a table field: When you use special characters in Access, you experience one of the following problems. This article applies to either a Microsoft Access database (.mdb) file or to a Microsoft Access database (.accdb) file, and to a Microsoft Access project (.adp) file.
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