How do you loop through an array in SQL Server?

Solution

Use DATABASENAME.
GO.
DECLARE @PRODUCTDETAILSTABLE table (PRODUCTNAME nvarchar(100), PRODUCTID int, PRODUCTCOST int)
— Declare your array table variable.
DECLARE @MYARRAY table (TEMPCOL nvarchar(50), ARRAYINDEX int identity(1,1) )

Does SQL Server support arrays?

Conclusion. As you can see, SQL Server does not include arrays. But we can use table variables, temporary tables or the STRING_SPLIT function. However, the STRING_SPLIT function is new and can be used only on SQL Server 2016 or later versions.

How do you write a loop in SQL Server?

I am detailing answer on ways to achieve different types of loops in SQL server.

FOR Loop. DECLARE @cnt INT = 0; WHILE @cnt < 10 BEGIN PRINT ‘Inside FOR LOOP’; SET @cnt = @cnt + 1; END; PRINT ‘Done FOR LOOP’;
DO.. WHILE Loop.
REPEAT..UNTIL Loop.

How do you declare an array in SQL Server?

Define arrays as SQL variables. Use the ARRAY_AGG built-in function in a cursor declaration, to assign the rows of a single-column result table to elements of an array. Use the cursor to retrieve the array into an SQL out parameter. Use an array constructor to initialize an array.

Can you do a for loop in SQL?

In SQL Server, there is no FOR LOOP. However, you simulate the FOR LOOP using the WHILE LOOP.

Which is better cursor or while loop in SQL Server?

While SQL While loop is quicker than a cursor, reason found that cursor is defined by DECLARE CURSOR. Every emphasis of the loop will be executed inside system memory and consuming required server assets.

Can you define an array in SQL?

You can create an array by creating an array type, and then defining an array variable of that type. For example: You need to use the ARRAY_AGG function to create an array that is the intermediate result of a SELECT statement, and then retrieve the contents of that array into an SQL array variable or parameter.

What is an array SQL?

An array in structured query language (SQL) can be considered as a data structure or data type that lets us define columns of a data table as multidimensional arrays. They are basically an ordered set of elements having all the elements of the same built-in data type arranged in contiguous memory locations.

Can I do a for loop in SQL?

Can we write loop in SQL?

In programming, a loop allows you to write a set of code that will run repeatedly within the same program. Many programming languages have several different types of loop to choose from, but in SQL Server there is only one: the WHILE loop.

What can a cursor FOR loop use?

The cursor FOR LOOP statement implicitly declares its loop index as a record variable of the row type that a specified cursor returns, and then opens a cursor. With each iteration, the cursor FOR LOOP statement fetches a row from the result set into the record.

How do I run a SQL query in a for loop?

Running a Query Inside the Loop

WHILE @Counter <= @MaxOscars.
BEGIN.
SET @NumFilms =
SELECT COUNT(*)
FROM tblFilm.
WHERE FilmOscarWins = @Counter.
SET @Counter += 1.
END.