Search results
SELECT ID, Name, Boss, (SELECT Name FROM Employees WHERE ID IN (SELECT Boss FROM Employees)) FROM Employees But it gives me an error: "Subquery returned more than 1 value.
22 lis 2012 · You do not need to use ORDER BY in your sub query - it is meaningless there. For primary/secondary sort, you use a single ORDER BY: SELECT Date_Réserve,Heure_Réserve FROM réserve ORDER BY Date_Réserve, Heure_Réserve
30 lis 2013 · SELECT count(*), article_title FROM articles GROUP BY article_title HAVING COUNT(*) > 1; Adding columns to the SELECT and GROUP BY clauses allow you to locate duplicates based on a composite key of multiple columns.
28 maj 2020 · I have a simple select statement from one table that lists the same numeric column (TRANAMT) twice. If the number is positive (>0) I want it to show in the first reference of TRANAMT. If the number is negative (<0) I want it to should in the next reference of TRANAMT.
12 paź 2024 · 3.1. In the SELECT Clause. First, we’ll take a look at an example with the Student and Exam tables, in which we’ll retrieve each student’s name and the number of exams they’ve taken: SELECT s.name, (SELECT COUNT (*) FROM Exam e WHERE e.student_id = s.id) AS exam_count FROM Student s;
3 paź 2015 · I want the same column first orders Ascendant and then Descendant. I am trying. Query. Select t1.age, t2.age. from table1 t1. inner join table1 t2. on t1.name=t2.name. order by t1.age asc, t2.age desc. But in the result, both columns ordered in the same way.
The SQL SELECT DISTINCT Statement. The SELECT DISTINCT statement is used to return only distinct (different) values. Example. Select all the different countries from the "Customers" table: SELECT DISTINCT Country FROM Customers; Try it Yourself »
