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- #PROGRAMS LIKE MY VISUAL DATABASE HOW TO#
- #PROGRAMS LIKE MY VISUAL DATABASE UPDATE#
- #PROGRAMS LIKE MY VISUAL DATABASE CODE#
To the project's directory and run the executable. To execute the program, since this is a console application, we need to navigate That the program is now ready for execution. Succeeded" notification on the bottom left corner of the window, it means Will be compiled and if everything is OK, that is if we get no errors and see the The key F6 or by clicking on the " Build" menuĪnd then click on " Build Solution", our program To compile the program, within our project in Visual Studio, by pressing
#PROGRAMS LIKE MY VISUAL DATABASE CODE#
OK, now that the source code is complete, it's time to compile and run SqlDataReader object in order to store and then display the query's results. SqlCommand object and passed as parameters the query and the SqlConnection object. SqlConnection object in order to set the connection based on the connection check if there are records if (dr.HasRows)Ĭonsole.WriteLine( "", empID.ToString(), empCode, empFirstName, empLastName, locationCode, locationDescr) Ĭonsole.WriteLine( "Exception: " + ex.Message) Īs you can see in the above code, I have used an SqlCommand cmd = new SqlCommand(query, conn) Ĭonsole.WriteLine(Environment.NewLine + "Retrieving data from database." + Environment.NewLine) Ĭonsole.WriteLine( "Retrieved records:") retrieve the SQL Server instance version string query = e.id,e.code,e.firstName,e.lastName,l.code,l.descr FROM employees e INNER JOIN location l on e.locationID=l.id " sql connection object using (SqlConnection conn = new SqlConnection(connString)) String empCode, empFirstName, empLastName, locationCode, locationDescr variables to store the query results int empID set the connection string string connString =.\SQL2K17 Database = SampleDB Trusted_Connection = True " Here's a screenshot of the SQL Server instance, as it can be seen in SSMS: Our example will be based on the database "SampleDB" which is a sampleĭatabase I created on a test SQL Server named instance on my local machine. This tip's examples, are related to the example in my previous tip In the previous tip, and see how you can query SQL Server tables via a C# consoleĪs mentioned above, in this tip we will see how you can run SQL Server queriesįrom within the C# application, as well as how you can process the results. More specifically, we are going to continue and further develop the example presented
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#PROGRAMS LIKE MY VISUAL DATABASE HOW TO#
In this tip, we are going to see how to query SQL Server tables from. Previous tips, I've talked about how you can get started with SQL ServerĪnd. Let’s practice with some examples of using the LIKE operator.By: Artemakis Artemiou | Updated: | Comments | Related: More > Application Development
#PROGRAMS LIKE MY VISUAL DATABASE UPDATE#
Typically, you’ll use the LIKE operator in the WHERE clause of the SELECT, DELETE, and UPDATE statement. When the pattern contains the wildcard character and you want to treat it as a regular character, you can use the ESCAPE clause.
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The se_ matches any string starts with se and is followed by any character such as see and sea. The underscore ( _ ) wildcard matches any single character.įor example, s% matches any string starts with the character s such as sun and six.The percentage ( % ) wildcard matches any string of zero or more characters.MySQL provides two wildcard characters for constructing patterns: percentage % and underscore _. In this syntax, if the expression matches the pattern, the LIKE operator returns 1. Expression LIKE pattern ESCAPE escape_character Code language: SQL (Structured Query Language) ( sql )