how to provide values to variables in a sql query tableplus

We can assign the values to the variables declared in SQL with the help of two methods that are given below: 1.

SELECT execution of the above batch statements gives the following output giving out the value of the variable demoEducba as “Happy Learning!” because we had initialized that variable to that value. We will declare one variable named declare the data type of that variable to the varchar, initialize the variable with a certain value, say “Happy Learning!” and then fetch the variable’s value using the select statement as shown below.ĭECLARE AS VARCHAR(100)='Happy Learning!' Let us consider one example of declaring the variables in SQL. Note that when we do not specify the initial value to the variable, the variable’s value is by default assigned to NULL.

Specifying the initial value to the variable is the optional thing. Further, we can assign the initial value to the declared variable that is as specified with Initial_Value. The variable’s data type can be specified while declaring it in the place where Data_Type is mentioned. The lifetime of the local variables begins once they are declared and ends with either the end of the stored procedure if those variables are used in the stored procedure or at the end of the batch in case if they are used in the batch execution. Further, the declared variables are referred to as the local variables. A variable name should always begin with symbol. Where Name_Of_Variable is the variable name that we wish to assign, note that according to the syntax of the variable declaration and usage in SQL.

How to provide values to variables in a sql query tableplus