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All the other answers here show how to set a variable using the output of a SELECT statement. Here's how to do it with a simple string: DECLARE @ModelID varchar(60) = 'Model T'
2 Ιουλ 2013 · For MySQL, please take a look this example code: -- Init variables. SET @var1 = 0; SET @var2 = 0; SET @var3 = 0; SELECT VALUE1, VALUE2, VALUE3 INTO @var1, @var2, @var3 FROM COOL_TABLE WHERE VALUE_ID = 12345; -- Then you can use declared variables. SELECT * FROM ANOTHER_TABLE WHERE VALUE1 = @var1 AND VALUE2 = @var2. answered Nov 5, 2016 at 23:55.
25 Νοε 2009 · SET and SELECT may be used to assign values to variables through T-SQL. Both fulfill the task, but in some scenarios unexpected results may be produced. In this tip I elaborate on the considerations for choosing between the SET and SELECT methods for assigning a value to variable.
16 Αυγ 2023 · For example, the below SQL code declares three variables @AvgUnitPrice, @AvgOrderQty, and @AvgLineTotal. The SELECT statement calculates the unit Price, Order Quantity, and Line Total average. These calculated values are assigned to the variables.
29 Νοε 2017 · SQL Server provides us with two methods in T-SQL to assign a value to a previously created local SQL variable. The first method is the SET statement, the ANSI standard statement that is commonly used for variable value assignment. The second statement is the SELECT statement.
What is the better way (with regards to performance) to set a value to variable? By SET command: DECLARE @VarString nvarchar(max); SET @VarString = 'john doe'; SELECT @VarString; By SELECT comma...
The SET command is used with UPDATE to specify which columns and values that should be updated in a table. The following SQL updates the first customer (CustomerID = 1) with a new ContactName and a new City: Example. UPDATE Customers. SET ContactName = 'Alfred Schmidt', City= 'Frankfurt' WHERE CustomerID = 1;
