Parameterized query null

How to insert null value in Database through parameterized query Ask Question. Asked 8 years, 7 months ago. Active 7 years, 8 months ago. Viewed 17k times. I have a datetime datatype : dttm Also the database field type is datatime Now I am doing this: if dttm. Improve this question. Django Anonymous Django Anonymous 2, 16 16 gold badges 55 55 silver badges bronze badges.

From msdn. Use DBNull. Value instead of null, to indicate a null value. Add a comment. Active Oldest Votes. Value will be inserted otherwise the value of dttm will be used cmd. AddWithValue " dtb", dttm?? Value ; This will eliminate the need for the if statment. Add " Department", SqlDbType. VarChar If TextBox2. Parameters " Department". Value Else cmd. Text End If This will convert the null values from the object layer to DBNull values that are acceptable to the database. Improve this answer.

Filip Cornelissen 3, 3 3 gold badges 30 30 silver badges 39 39 bronze badges. Shorthand: cmd. Value; — Niels Brinch. This works for me. Add has been depreciated. Value ; — Joshua Oglesbee.

This answer or the subsequent comments do not use a deprecated method. From the docs : "Use DBNull. Value instead of null, to indicate a null value. Your website is in serious danger of being hacked. NET Your query problem is the least of your concerns right now.

Misnomer's solution is close but not quite there: Change your query to this: cmd. Text The important difference is that you need to change your CommandText. Abe Miessler Abe Miessler VarChar cmd. Text error "The parameterized query ' Parameter1 nvarchar , Department varchar , Departmen' expects the parameter ' Parameter1', which was not supplied. I suspect your error is being thrown from somewhere else. Can you post your stack trace?

Building on and simplifying ravidev's answer : The VB. NET shorthand is: cmd. Text, DBNull. Value The C shorthand is: cmd. Adrian Mole Dan Friedman Dan Friedman 4, 39 39 silver badges 57 57 bronze badges. The Filter Rows dialog box appears. Select the button to the left of the Value box, and then do one of the following:.

To use an existing parameter, select Parameter , and then select the parameter you want from the list that appears on the right. For example, change the filter value to a different date to see new results. In this example, the value in the query parameter is read from a cell in your workbook. You don't have to change the parameter query, you just update the cell value.

For example, you want to filter a column by the first letter, but easily change the value to any letter from A to Z. On the worksheet in a workbook where the query you want to filter is loaded, create an Excel table with two cells: a header and a value. The Power Query Editor appears. In the Name box of the Query Settings pane on the right, change the query name to be more meaningful, such as FilterCellValue.

To pass the value in the table, and not the table itself, right-click the value in Data Preview, and then select Drill Down. When you use the Excel Table as a filter in step 10, Power Query references the Table value as the filter condition.

A direct reference to the Excel Table would cause an error. You now have a query parameter named "FilterCellValue" that you use in step Enter any value in the Value box, such as "G" and then select OK. In this case, the value is a temporary placeholder for the value in the FilterCellValue table which you enter in the next step. Select the arrow on the right side of the formula bar to display the whole formula. SelectRows "Changed Type", each Text.

StartsWith [Name], "G". Using M Intellisense, enter the first few letter of the FilterCellValue table you created, and then select it from the list that appears. Your query now uses the value in the Excel Table that you created to filter the query results. To use a new value, edit the cell contents in the original Excel table in step 1, change "G" to "V", and then refresh the query.

In the pane on the right, under Parameters , select or clear Always allow parameterization in data source and transformation dialogs. Power Query for Excel Help. Use Query Parameters docs. Excel for Microsoft Excel for the web More In the Manage Parameter dialog box, select New.

Set the following as needed: Name This should reflect the parameter's function, but keep it as short as possible. Description This can contain any details that will help people correctly use the parameter. Required Do one of the following: Any Value You can enter any value of any data type in the parameter query. Type This specifies the data type of the parameter. Suggested Values If desired, add a list of values or specify a query to provide suggestions for input.

Default Value This only appears if Suggested Values is set to List of values , and specifies which list item is the default.