List NOT NULL value and order it : Null « Data Type « SQL / MySQL






List NOT NULL value and order it

   
/*
mysql> select * from employee_person;
+----+-------------------------------------+---------+---------------------------+------------+------+----------+-----------------+----------+
| id | address                             | phone   | email | birthday   | sex  | m_status | s_name          | children |
+----+-------------------------------------+---------+---------------------------+------------+------+----------+-----------------+----------+
|  1 | 200, Regina Street                  | 7176666 | net@hotmail.com | 1971-04-26 | M    | Y        | Ane Regina      |     NULL |
|  2 | 1232 Alberta Road                   | 5553312 | jo@hotmail.com | 1968-03-02 | M    | Y        | Jane Van        |        3 |
|  3 | 90 Potter A                         | 3331211 | gp@ymail.com | 1967-09-22 | M    | N        | Sandhya Pil     |        2 |
|  4 | 202, Donna Street                   | 7176167 | twink@hotmail.com | 1976-08-09 | F    | Y        | Manish Sha      |     NULL |
|  5 | Apartment #8, UBC, Van Street       | 8973242 | holy@ymail.com | 1974-10-14 | F    | N        | NULL            |     NULL |
|  6 | 46 SFU Street                       | 6451234 | kill@el.com | 1978-12-31 | M    | N        | NULL            |     NULL |
|  7 | 432 Mercury Ave                     | 7932232 | mac@hotmail.com | 1966-08-21 | M    | Y        | Mary Shelly     |        3 |
|  8 | 8 Little YaleTown                   | 5442994 | edd@gmail.com | 1975-01-14 | M    | N        | NULL            |     NULL |
|  9 | 64 Temp Road                        | 4327652 | nan@pmail.com | 1969-05-19 | M    | Y        | Man Nanda       |        1 |
| 10 | 132 Metro House, Henry Street       | 5552376 | ra@hotmail.com | 1968-07-06 | M    | N        | NULL            |     NULL |
| 11 | 1 Grace Town, Van Avenue            | 5433879 | soundofsilence@boxer.net | 1957-11-04 | M    | Y        | Muriel Lovelace |        4 |
| 12 | 97 Oakland Road                     | 5423311 | kingarthur@roundtable.org | 1968-02-15 | M    | Y        | Rina Brighton   |        3 |
| 13 | 543 Applegate Lane                  | 3434343 | levy@cmail.com | 1968-09-03 | F    | Y        | Matt Shi        |        2 |
| 14 | 76 Fish Street                      | 7432433 | tink@email.com | 1965-04-28 | M    | N        | NULL            |     NULL |
| 15 | 98 Gun Street                       | 6500787 | danny@fhardy.com | 1966-06-23 | M    | Y        | Betty Cudly     |        3 |
| 16 | #5 Winnepag Homes                   | 5433243 | mike@cmail.com | 1964-03-06 | M    | Y        | Stella Stevens  |        2 |
| 17 | 652 Devon Building, 6th Jade Avenue | 5537885 | mona@darling.com | 1970-04-18 | F    | Y        | Edgar Alan      |        1 |
| 18 | Apartment #9, Together Towers       | 5476565 | odessey@hotmail.com | 1973-10-09 | M    | N        | NULL            |     NULL |
| 19 | Apartment #9, West Towers           | 5476565 | jire@hotmail.com | 1973-01-20 | M    | N        | NULL            |     NULL |
| 20 | 90 Yale Town                        | 7528326 | help@more.org | 1968-01-25 | F    | N        | NULL            |     NULL |
| 21 | 4329 Eucalyptus Avenue              | 4254863 | money@cold.com | 1964-06-13 | M    | Y        | Ruby Richer     |        2 |
+----+-------------------------------------+---------+---------------------------+------------+------+----------+-----------------+----------+
21 rows in set (0.01 sec)

mysql> select id, s_name
    ->        from employee_person
    ->        where s_name IS NOT NULL
    ->        ORDER BY s_name;
+----+-----------------+
| id | s_name          |
+----+-----------------+
|  1 | Ane Regina      |
| 15 | Betty Cudly     |
| 17 | Edgar Alan      |
|  2 | Jane Van        |
|  9 | Man Nanda       |
|  4 | Manish Sha      |
|  7 | Mary Shelly     |
| 13 | Matt Shi        |
| 11 | Muriel Lovelace |
| 12 | Rina Brighton   |
| 21 | Ruby Richer     |
|  3 | Sandhya Pil     |
| 16 | Stella Stevens  |
+----+-----------------+
13 rows in set (0.00 sec)


*/       
Drop table employee_person;

CREATE TABLE employee_person (
    id int unsigned not null primary key, 
    address varchar(60), 
    phone int, 
    email varchar(60), 
    birthday DATE, 
    sex ENUM('M', 'F'), 
    m_status ENUM('Y','N'), 
    s_name varchar(40), 
    children int
);


INSERT INTO employee_person (id, address, phone, email, birthday, sex, m_status, s_name) values (1, '200, Regina Street', 7176666, 'net@hotmail.com', '1971-04-26', 'M', 'Y', 'Ane Regina');
INSERT INTO employee_person (id, address, phone, email, birthday, sex, m_status, s_name, children) values (2, '1232 Alberta Road', 5553312, 'jo@hotmail.com', '1968-03-02', 'M', 'Y', 'Jane Van', 3);
INSERT INTO employee_person (id, address, phone, email, birthday, sex, m_status, s_name, children) values (3, '90 Potter A', 3331211, 'gp@ymail.com', '1967-09-22', 'M', 'N', 'Sandhya Pil', 2);
INSERT INTO employee_person (id, address, phone, email, birthday, sex, m_status, s_name) values (4, '202, Donna Street', 7176167, 'twink@hotmail.com', '1976-08-09', 'F', 'Y', 'Manish Sha');
INSERT INTO employee_person (id, address, phone, email, birthday, sex, m_status) values (5, 'Apartment #8, UBC, Van Street', 8973242, 'holy@ymail.com', '1974-10-14', 'F', 'N');
INSERT INTO employee_person (id, address, phone, email, birthday, sex, m_status) values (6, '46 SFU Street', '6451234', 'kill@el.com', '1978-12-31', 'M', 'N');
INSERT INTO employee_person (id, address, phone, email, birthday, sex, m_status, s_name, children) values (7, '432 Mercury Ave', 7932232, 'mac@hotmail.com', '1966-8-21', 'M', 'Y', 'Mary Shelly', '3');
INSERT INTO employee_person (id, address, phone, email, birthday, sex, m_status) values (8, '8 Little YaleTown', 5442994, 'edd@gmail.com', '1975-01-14', 'M', 'N');
INSERT INTO employee_person (id, address, phone, email, birthday, sex, m_status, s_name, children) values (9, '64 Temp Road', 4327652, 'nan@pmail.com', '1969-05-19', 'M', 'Y', 'Man Nanda', '1');
INSERT INTO employee_person (id, address, phone, email, birthday, sex, m_status) values (10, '132 Metro House, Henry Street', 5552376, 'ra@hotmail.com', '1968-07-06', 'M', 'N');
INSERT INTO employee_person (id, address, phone, email, birthday, sex, m_status, s_name, children) values (11, '1 Grace Town, Van Avenue', 5433879, 'soundofsilence@boxer.net', '1957-11-04', 'M', 'Y', 'Muriel Lovelace', '4');
INSERT INTO employee_person (id, address, phone, email, birthday, sex, m_status, s_name, children) values (12, '97 Oakland Road', 5423311, 'kingarthur@roundtable.org', '1968-02-15', 'M', 'Y', 'Rina Brighton', 3);
INSERT INTO employee_person (id, address, phone, email, birthday, sex, m_status, s_name, children) values (13, '543 Applegate Lane', 3434343, 'levy@cmail.com', '1968-09-03', 'F', 'Y', 'Matt Shi', '2');
INSERT INTO employee_person (id, address, phone, email, birthday, sex, m_status) values (14, '76 Fish Street', 7432433, 'tink@email.com', '1965-04-28', 'M', 'N');
INSERT INTO employee_person (id, address, phone, email, birthday, sex, m_status, s_name, children) values (15, '98 Gun Street', 6500787, 'danny@fhardy.com', '1966-06-23', 'M', 'Y', 'Betty Cudly', 3);
INSERT INTO employee_person (id, address, phone, email, birthday, sex, m_status, s_name, children) values (16, '#5 Winnepag Homes', 5433243, 'mike@cmail.com', '1964-03-06', 'M', 'Y', 'Stella Stevens', 2);
INSERT INTO employee_person (id, address, phone, email, birthday, sex, m_status, s_name, children) values (17, '652 Devon Building, 6th Jade Avenue', 5537885, 'mona@darling.com', '1970-04-18', 'F', 'Y', 'Edgar Alan', 1);
INSERT INTO employee_person (id, address, phone, email, birthday, sex, m_status) values (18, 'Apartment #9, Together Towers', 5476565, 'odessey@hotmail.com', '1973-10-09', 'M', 'N');
INSERT INTO employee_person (id, address, phone, email, birthday, sex, m_status) values (19, 'Apartment #9, West Towers', 5476565, 'jire@hotmail.com', '1973-1-20', 'M', 'N');
INSERT INTO employee_person (id, address, phone, email, birthday, sex, m_status) values (20, '90 Yale Town', 7528326, 'help@more.org', '1968-01-25', 'F', 'N');
INSERT INTO employee_person (id, address, phone, email, birthday, sex, m_status, s_name, children) values (21, '4329 Eucalyptus Avenue', 4254863, 'money@cold.com', '1964-06-13', 'M', 'Y', 'Ruby Richer', 2);
  

select * from employee_person;

select id, s_name
       from employee_person
       where s_name IS NOT NULL 
       ORDER BY s_name;



           
         
    
    
  








Related examples in the same category

1.Retrieve NULL value
2.Concatenate string with NULL value
3.Working with NULL Values
4.Use the IS NULL and IS NOT NULL operators
5.NULL means 'not having a value'
6.Disallowing NULLs
7.Retrieve NOT NULL value
8.Select NOT NULL value
9.IS NOT NULL in where clause
10.NULL value in where clause
11.Read NULL value
12.Dealing With NULL Data
13.An important one to note; the result is not 0 (false), it's NULL
14.To evaluate NULL rows
15.NULL is basically a third possible result of an evaluation: There's true, false, and then there's NULL.
16.Use the IS NULL (or IS NOT NULL) comparison instead
17.Assuming that NULL values sort ahead of all non-NULL values
18.Passing a NULL value to a function results in a NULL return value.
19.Set value to null
20.What is the result of the calculation 10 divided by 0?
21.If the value of an expression cannot be determined, the result is NULL: