How do you DECLARE a temporary variable in SQL?

How do I create a temporary dataset in SQL?

What is Temporary Table in SQL?1To Create Temporary Table: CREATE TABLE #EmpDetails (id INT, name VARCHAR(25))2To Insert Values Into Temporary Table: INSERT INTO #EmpDetails VALUES (01, 'Lalit'), (02, 'Atharva')3To Select Values from Temporary Table: SELECT * FROM #EmpDetails.4Result: id. name. Lalit. Atharva.What is Temporary Table in SQL? - GeeksforGeeks

How do I DECLARE a variable in SQL Server?

SQL Variable declaration The DECLARE statement is used to declare a variable in SQL Server. In the second step, we have to specify the name of the variable. Local variable names have to start with an at (@) sign because this rule is a syntax necessity. Finally, we defined the data type of the variable.

How is a temporary table declared?

You can populate the declared temporary table by using INSERT statements, modify the table by using searched or positioned UPDATE or DELETE statements, and query the table by using SELECT statements. You can also create indexes on the declared temporary table.

How do you write a variable in SQL query?

The syntax for assigning a value to a SQL variable within a SELECT query is @ var_name := value , where var_name is the variable name and value is a value that you're retrieving. The variable may be used in subsequent queries wherever an expression is allowed, such as in a WHERE clause or in an INSERT statement.