How do I use ExecuteScalar?
Use the ExecuteScalar method to retrieve a single value (for example, an aggregate value) from a database. This requires less code than using the ExecuteReader method, and then performing the operations that you need to generate the single value using the data returned by a SqlDataReader.
What is the use of ExecuteScalar () method in Ado net?
ExecuteScalar method is used to execute SQL Commands or storeprocedure, after executing return a single value from the database. It also returns the first column of the first row in the result set from a database.
Why we use execute non query?
ExecuteNonQuery: Use this operation to execute any arbitrary SQL statements in SQL Server if you do not want any result set to be returned. You can use this operation to create database objects or change data in a database by executing UPDATE, INSERT, or DELETE statements.
Can I use MySQL with Visual Studio?
MySQL for Visual Studio provides access to MySQL objects and data from Visual Studio. As a Visual Studio package, MySQL for Visual Studio integrates directly into Server Explorer providing the ability to create new connections and work with MySQL database objects.
Can we do SQL in Visual Studio code?
The mssql extension for Visual Studio Code lets you connect to a SQL Server, query with Transact-SQL (T-SQL), and view the results.
Can MySQL run on Visual Studio?
MySQL for Visual Studio is an add-on for Microsoft Visual Studio that simplifies the development of applications using data stored by the MySQL RDBMS. Many MySQL for Visual Studio features also require that MySQL Connector/NET be installed on the same host where you perform Visual Studio development.
What is difference between execute and non query?
net but it is used in JAVA. ExecuteNonQuery: Executes Insert, Update, and Delete statements (DML statements) and returns the number of rows affected. ExecuteReader: Executes the SQL query (Select statement) and returns a Reader object which can perform a forward only traversal across the set of records being fetched.
Is Visual Studio necessary for MySQL?
You do not need Visual Studio for MySQL. However, if you would like to use “MySQL for Visual Studio”, it will require VS 2008, 2010, 2012, 2013, 2015, or newer versions as time goes on (per installer).
How do I run MySQL code in Visual Studio?
Opening a Code Editor
- Open the Server Explorer pane by clicking View.
- Right-click the Data Connections node and select Add Connection.
- In the Add Connection window, make sure the MySQL Data Provider is being used and fill in all the information.
- Click Test Connection to ensure you have a valid connection, then click OK.
What is the difference between mysql command and executescalar?
MySqlCommand. ExecuteScalar Method Executes the query, and returns the first column of the first row in the result set returned by the query. Extra columns or rows are ignored. IDbCommand. ExecuteScalar () Use the ExecuteScalar method to retrieve a single value (for example, an aggregate value) from a database.
What is the use of executescalar?
ExecuteScalar Method Executes the query, and returns the first column of the first row in the result set returned by the query. Extra columns or rows are ignored. IDbCommand. ExecuteScalar () Use the ExecuteScalar method to retrieve a single value (for example, an aggregate value) from a database.
What is the difference between idbcommand execute and executescalar?
Executes the query, and returns the first column of the first row in the result set returned by the query. Extra columns or rows are ignored. IDbCommand. ExecuteScalar () Use the ExecuteScalar method to retrieve a single value (for example, an aggregate value) from a database.
What is the use of mysql command?
MySqlCommand. ExecuteScalar Method Executes the query, and returns the first column of the first row in the result set returned by the query. Extra columns or rows are ignored. IDbCommand.