How to pass a null variable to a SQL Stored Procedure from C#.net code - Stack Overflow

You use data transformation activities in a Data Factory pipeline to transform and process raw data into predictions and insights. The Stored Procedure Activity is one of the transformation activities that Data Factory supports. This article builds on the data transformation activities article, which presents a general overview of data transformation and the supported transformation activities in Data Factory. You can use the Stored Procedure Activity to invoke a stored procedure in one of the following data stores in your enterprise or on an Azure virtual machine VM:.

When copying data into Azure SQL Database or SQL Server, you can configure the SqlSink in copy activity to invoke a stored procedure by using the sqlWriterStoredProcedureName property. For more information, see Invoke stored procedure from copy activity. For details about the property, see following connector articles: Azure SQL DatabaseSQL Server. When copying data from Azure SQL Database or SQL Server or Azure SQL Data Warehouse, you can configure SqlSource in copy activity to invoke a stored procedure to read data from the source database by using the sqlReaderStoredProcedureName property.

For more information, see the following connector articles: Azure SQL DatabaseSQL ServerAzure SQL Data Warehouse. The following walkthrough uses the Stored Procedure Activity in a pipeline to invoke a stored procedure in an Azure SQL database.

Create the following table in your Azure SQL Database using SQL Server Management Studio or any other tool you are comfortable with.

The datetimestamp column is the date and time when the corresponding ID is generated. Id is the unique identified and the datetimestamp column is the date and time when the corresponding ID is generated.

In this sample, the stored procedure is in an Azure SQL Database. If the stored procedure is in an Azure SQL Data Warehouse and SQL Server Database, the approach is similar. For a SQL Server database, you must install a Data Management Gateway. Create the following stored procedure that inserts data in to the sampletable.

In the stored procedure definition, ensure that is used as a prefix for the parameter. In the New data factory blade, enter SProcDF for the Name. Azure Data Factory names are globally unique. You need to prefix the name of the data factory with your name, to enable the successful creation of the factory.

You see the data factory being created in the dashboard of the Azure portal. After the data factory has been created successfully, you see the data factory page, which shows you the contents of the data factory.

Click New data store on the command bar and choose Azure SQL Database. You should see the JSON script for creating an Azure SQL linked service in the editor.

To deploy the linked service, click Deploy on the command bar. Confirm that you see the AzureSqlLinkedService in the tree view on the left.

You must specify an output dataset ludacris money maker pharrell a stored procedure activity even if the stored procedure does not produce any data.

That's because it's the output dataset that drives the schedule of sql server stored procedure parameter null value activity how often the activity is run - hourly, daily, etc. The output dataset must use a linked service that refers to an Azure SQL Database or an Azure SQL Data Warehouse or a SQL Server Database in which you want automatic forex trading stored procedure to run. The output dataset can serve as a way to pass the result of the stored procedure for subsequent processing by another activity chaining activities in the pipeline.

However, Data Factory does not automatically write the output of a stored procedure to this dataset. It is the stored procedure that writes to a SQL table that the output dataset points to. In some cases, renko chart trading system output dataset can be a dummy dataset a dataset that points to a table that does not really hold output of the stored procedure.

This dummy dataset is used only to specify the schedule for running the stored procedure activity. More on the toolbar, click New datasetand binary options ipad Azure SQL.

New dataset on the command bar and select Azure SQL. To deploy the dataset, click Deploy on the command bar. Confirm that you see the dataset in the tree view. Click X to close Data Factory Editor blades and to navigate back to the Data Factory blade, and click Diagram. In the Diagram Viewyou see an overview of the pipelines, and datasets used in this tutorial. In the Diagram View, double-click the dataset sprocsampleout.

You see the slices in Ready state. There should be five slices because a slice is produced for each hour between the start time and end time from the JSON. See Monitor the pipeline for detailed information about monitoring Azure Data Factory pipelines. In the walkthrough, stored procedure activity does not have any input datasets. If you specify an input dataset, the stored procedure activity does not run until the slice of input dataset is available in Ready state. The dataset can be an roaring twenties stock market crash dataset that is not produced by another activity in the same pipeline or an internal dataset that is produced by an upstream activity the activity that runs before this activity.

You can specify multiple input datasets for the stored procedure activity. If you do so, the stored procedure activity runs only when all the input dataset slices are available in Ready state. The input dataset cannot be consumed in the stored procedure as a parameter. It is only used to check the dependency before starting the stored procedure activity. If you want to chain an upstream activity with this activity, specify the output of the upstream activity as an input of this activity.

When you do so, the stored procedure activity does not run until the upstream activity completes and the output dataset of the upstream activity is available in Ready status.

You can specify output datasets of multiple upstream activities as input datasets of the stored procedure activity. When you do so, the stored procedure activity runs only when all the input dataset slices are available.

In the following example, the output of the copy activity is: OutputDataset, which is an input of the stored procedure activity. Therefore, the stored procedure activity does not run until the copy activity completes and the OutputDataset slice is available in Ready state.

NULL Input Parameter to Stored Procedure

If you specify multiple input datasets, the stored procedure activity does not run until all the input dataset slices are available in Ready state. The input datasets cannot be used directly as parameters to the stored procedure activity. For more information on chaining activities, see multiple activities in a pipeline. Similarly, to link the store procedure activity with downstream activities the activities that run after the stored procedure activity completesspecify the output dataset of the stored procedure activity as an input of the downstream activity in the pipeline.

For details about the property, see the following connector articles: Now, pass the Scenario parameter and the value from the stored procedure activity. The typeProperties section in the preceding sample looks like the following snippet:.

This content is not available in your language but here is the English version. Hive Activity Pig Activity MapReduce Activity Hadoop Streaming Activity Spark Activity Machine Learning Batch Execution Activity Machine Learning Update Resource Activity Stored Procedure Activity Data Lake Analytics U-SQL Activity.

Important When copying data into Azure SQL Database or SQL Server, you can configure the SqlSink in copy activity to invoke a stored procedure by using the sqlWriterStoredProcedureName property. Comments Edit Share Twitter. You must specify an output dataset for a stored procedure activity.

Output dataset specifies the schedule for the stored procedure activity hourly, weekly, monthly, etc. In some cases, the output dataset can be a dummy datasetwhich is used only to specify the schedule for running the stored procedure activity.

Specifying a Parameter Default Value

Specify the name of the stored procedure in the Azure SQL database or Azure SQL Data Warehouse or SQL Server database that is represented by the linked service that the output table uses. Specify values for stored procedure parameters. If you need to pass null for a parameter, use the syntax: See the following sample to learn about using this property.