What does returning do in SQL?
The RETURNING clause allows you to retrieve values of columns (and expressions based on columns) that were modified by an insert, delete or update. Without RETURNING , you would have to run a SELECT statement after the DML statement is completed, in order to obtain the values of the changed columns.
How do you return a stored procedure in SQL Server?
In your stored procedure add the parameter @text nvarchar(1000) OUTPUT then in your code add an extra parameter with the name @text and set the parameter direction to output . Also you should really be wrapping your SqlCommand and SqlConnection object in using statements to stop leaky connections.
Can we return from stored procedure?
You can use one or more RETURN statements in a stored procedure. The RETURN statement can be used anywhere after the declaration blocks within the SQL-procedure-body. To return multiple output values, parameters can be used instead.
Which SQL keyword is used to retrieve a maximum value?
MAX() is the SQL keyword is used to retrieve the maximum value in the selected column.
What is return in PL SQL?
The RETURN statement immediately completes the execution of a subprogram and returns control to the caller. Execution resumes with the statement following the subprogram call. In a function, the RETURN statement also sets the function identifier to the return value.
What is difference between stored procedure and function?
The function must return a value but in Stored Procedure it is optional. Even a procedure can return zero or n values. Functions can have only input parameters for it whereas Procedures can have input or output parameters. Functions can be called from Procedure whereas Procedures cannot be called from a Function.
Can stored procedure return multiple values?
Multiple values will be returned from Stored Procedure by returning comma separated (delimited) values using Output Parameter. Output Parameter is supported in Stored Procedures of all SQL Server versions i.e. 2000, 2005, 2008, 2008R2, 2012 and 2014.
What is the return value of a function?
A return is a value that a function returns to the calling script or function when it completes its task. A return value can be any one of the four variable types: handle, integer, object, or string. The type of value your function returns depends largely on the task it performs.
How many values can a stored procedure return?
MySQL stored function returns only one value. To develop stored programs that return multiple values, you need to use stored procedures with INOUT or OUT parameters.
Can we return table variable from stored procedure?
Every stored procedure can return an integer value known as the execution status value or return code. If you still want a table returned from the SP, you’ll either have to work the record set returned from a SELECT within the SP or tie into an OUTPUT variable that passes an XML datatype.
Which of the following SQL commands is used to retrieve data?
Explanation: In database SELECT query is used to retrieve data from a table. It is the most used SQL query.
Which SQL keyword is used to retrieve unique values?
The correct answer is option D (Select distinct).