Using a CASE Expression in an ORDER BY Clause (Alternative) : Order Columns « Select Query « SQL Server / T-SQL






Using a CASE Expression in an ORDER BY Clause (Alternative)

 

3>
4> CREATE TABLE employee(
5>    id          INTEGER NOT NULL PRIMARY KEY,
6>    first_name  VARCHAR(10),
7>    last_name   VARCHAR(10),
8>    salary      DECIMAL(10,2),
9>    start_Date  DATETIME,
10>    region      VARCHAR(10),
11>    city        VARCHAR(20),
12>    managerid   INTEGER
13> );
14> GO
1> INSERT INTO employee VALUES (1, 'Jason' ,  'Martin', 5890,'2005-03-22','North','Vancouver',3);
2> GO

(1 rows affected)
1> INSERT INTO employee VALUES (2, 'Alison',  'Mathews',4789,'2003-07-21','South','Utown',4);
2> GO

(1 rows affected)
1> INSERT INTO employee VALUES (3, 'James' ,  'Smith',  6678,'2001-12-01','North','Paris',5);
2> GO

(1 rows affected)
1> INSERT INTO employee VALUES (4, 'Celia' ,  'Rice',   5567,'2006-03-03','South','London',6);
2> GO

(1 rows affected)
1> INSERT INTO employee VALUES (5, 'Robert',  'Black',  4467,'2004-07-02','East','Newton',7);
2> GO

(1 rows affected)
1> INSERT INTO employee VALUES (6, 'Linda' ,  'Green' , 6456,'2002-05-19','East','Calgary',8);
2> GO

(1 rows affected)
1> INSERT INTO employee VALUES (7, 'David' ,  'Larry',  5345,'2008-03-18','West','New York',9);
2> GO

(1 rows affected)
1> INSERT INTO employee VALUES (8, 'James' ,  'Cat',    4234,'2007-07-17','West','Regina',9);
2> GO

(1 rows affected)
1> INSERT INTO employee VALUES (9, 'Joan'  ,  'Act',    6123,'2001-04-16','North','Toronto',10);
2> GO

(1 rows affected)
1>
2> select * from employee;
3> GO
id          first_name last_name  salary       start_Date              region     city                 managerid
----------- ---------- ---------- ------------ ----------------------- ---------- -------------------- -----------
          1 Jason      Martin          5890.00 2005-03-22 00:00:00.000 North      Vancouver                      3
          2 Alison     Mathews         4789.00 2003-07-21 00:00:00.000 South      Utown                          4
          3 James      Smith           6678.00 2001-12-01 00:00:00.000 North      Paris                          5
          4 Celia      Rice            5567.00 2006-03-03 00:00:00.000 South      London                         6
          5 Robert     Black           4467.00 2004-07-02 00:00:00.000 East       Newton                         7
          6 Linda      Green           6456.00 2002-05-19 00:00:00.000 East       Calgary                        8
          7 David      Larry           5345.00 2008-03-18 00:00:00.000 West       New York                       9
          8 James      Cat             4234.00 2007-07-17 00:00:00.000 West       Regina                         9
          9 Joan       Act             6123.00 2001-04-16 00:00:00.000 North      Toronto                       10

(9 rows affected)
1>
2>
3> SELECT
4>   *
5> FROM
6>   Employee
7> ORDER BY
8>   CASE City
9>     WHEN 'Vancouver' THEN 1
10>     WHEN 'Toronto'    THEN 2
11>     WHEN 'Mexico' THEN 3
12>     ELSE               4
13>   END,     -- Dummy NAFTA Region
14>   City,
15>   Region
16> GO
id          first_name last_name  salary       start_Date              region     city                 managerid
----------- ---------- ---------- ------------ ----------------------- ---------- -------------------- -----------
          1 Jason      Martin          5890.00 2005-03-22 00:00:00.000 North      Vancouver                      3
          9 Joan       Act             6123.00 2001-04-16 00:00:00.000 North      Toronto                       10
          6 Linda      Green           6456.00 2002-05-19 00:00:00.000 East       Calgary                        8
          4 Celia      Rice            5567.00 2006-03-03 00:00:00.000 South      London                         6
          7 David      Larry           5345.00 2008-03-18 00:00:00.000 West       New York                       9
          5 Robert     Black           4467.00 2004-07-02 00:00:00.000 East       Newton                         7
          3 James      Smith           6678.00 2001-12-01 00:00:00.000 North      Paris                          5
          8 James      Cat             4234.00 2007-07-17 00:00:00.000 West       Regina                         9
          2 Alison     Mathews         4789.00 2003-07-21 00:00:00.000 South      Utown                          4

(9 rows affected)
1>
2> drop table employee;
3> GO

 








Related examples in the same category

1.Order criterion may contain more than one column
2.Identify the columns in the ORDER BY clause by the ordinal position of the column in the SELECT list
3.Order by two columns
4.Using a CASE Expression in an ORDER BY Clause