In the second example (where the sql command is stored in a file), one has to provide values for the sql parameters usingparams=. But it does not matter how you access the paramters in the sql command, whether by using%(begin_date)or{{ params.begin_date }}, both of them work fine...
One of the benefits of SQL is the ability to write a query and use parameters to dynamically act upon the resultset. Depending on the situation, there can be benefits to parameterizing queries, but it is not always clear when or how to do this. In this tip we look at different ways ...
Anyway, the SQL connection is fine, and everything works for the first query (without the parameter). It's the second query that just won't work no matter what I do. In debug mode, I can see that the Dictionary<string, string> parameters variable does contain the parameter name and ...
Description:After upgrading from the latest 5.0.x connector to 5.1.6, this problem appears. Using Visual Studio .NET 2005 on Windows XP, MySql server 5.0.51a on win2k3, and a simple query inside a SqlDataSource. Strangely, the problem is only present when running on localhost with Visual...
I was trying to pass the number of rows to be returned using DbParameters, and was getting puzzled by the sqlclient error. Thanks to your tip, I encapsulated the parameter in parenthesis and it worked ! Anonymous December 10, 2010 It took me a surprisingly long time to find the solution...
Creating a Parameterized Query Step 1: Adding a WHERE Clause When Picking the Columns from a Table or View Step 2: Adding Parameters to a Custom SQL Statement Show 7 more by Scott Mitchell Download PDF In this tutorial, we continu...
If the statement is executed repeatedly, a completely new Transact-SQL string must be built for each execution, even when the only differences are in the values supplied for the parameters. This generates additional overhead in the following ways: The ability of the SQL Server query optimizer to...
' must be defined." error, when attempting to execute the query, "insert into table_name (Field1, Field1) VALUES(?,?)" Exception received: [MySqlException (0x80004005): Parameter '?' must be defined.] MySql.Data.MySqlClient.Statement.SerializeParameter(MySqlParameterCollection parameters, MySql...
Working with Query and Report Parameters Report parameters allow end users to enter values (or use specified defaults), which are used when a report is processed. The new value replaces the parameter placeholder. For example, a report based on sales by country could support a parameter for cou...
A new feature introduced in SQL Server 2008 is Table-Valued Parameters. In this tip we will look at some examples.