How can I return multiple rows as a single row in SQL?

How can I return multiple rows as a single row in SQL?

Here is the example.

1. Create a database.
2. Create 2 tables as in the following.
3. Execute this SQL Query to get the student courseIds separated by a comma. USE StudentCourseDB. SELECT StudentID, CourseIDs=STUFF. ( ( SELECT DISTINCT ‘, ‘ + CAST(CourseID AS VARCHAR(MAX)) FROM StudentCourses t2. WHERE t2.StudentID = t1.StudentID.

How do I put multiple rows in one row in Excel?

Merge Excel rows using a formula. Combine multiple rows with Merge Cells add-in….To merge two or more rows into one, here’s what you need to do:

1. Select the range of cells where you want to merge rows.
2. Go to the Ablebits Data tab > Merge group, click the Merge Cells arrow, and then click Merge Rows into One.

How to write query to only return two rows?

But this query returns multiple rows, which I know is because there are multiple matches from the second table. How do I write the query to only return two rows? Simple join returns the Cartesian multiplication of the two sets and you have 2 A in the first table and 3 A in the second table and you probably get 6 results.

How to handle multiple row subquery in SQL?

Multiple row subquery returns one or more rows to the outer SQL statement. You may use the IN, ANY, or ALL operator in outer query to handle a subquery that returns multiple rows. Contents: Using IN operator with a Multiple Row Subquery. Using NOT IN operator with a Multiple Row Subquery.

How to roll up multiple rows into one row in SQL Server?

How to Rollup Multiple Rows into a Single Row in SQL Server. Rolling up data from multiple rows into a single row may be necessary for concatenating data, reporting, exchanging data between systems and more. This can be accomplished by: The solution proposed in this tip explores two SQL Server commands that can help us achieve the expected results.

Why does select statement return more than one row?

For example: This is because the subquery in the SELECT statement returned more than one row for the predicate department_id, which does not comply with a singular value limited operator, the equal =. Consequently, the statement fails to continue and then throw ORA-01427 to notify developers.