CODEWITHSUNDEEP
mysql
Lawrence Gadette
Lawrence Gadette

Reputation: 75

MYSQL - Sort by first letter

i have this sql query (below) and it works great but i need to modify it to select only records with $a first character. I've tried a few variations of the LIKE A% with no luck. The crux of my situation seems to be the name alias. If i use WHERE name LIKE 'A%' before the ORDER i get an error. That seems like the logical place for it to be. Any suggestions?

SELECT  
  IF(company_name <> '', company_name, PC_last_name) AS name, 
  customer_id AS id, 
  company_name AS cn, 
  PC_first_name AS pcf, 
  PC_last_name AS pcl, 
  primary_phone 
FROM sales_customer 
ORDER BY name

Upvotes: 2

Views: 12257

Answers (3)

Rafael Guimar&#227;es
Rafael Guimar&#227;es

Reputation: 408

I found this on dba stackexchange: https://dba.stackexchange.com/questions/60137/mysql-is-it-possible-to-order-a-query-by-a-specific-letter-using-order-by

DROP TABLE IF EXISTS products;

create table products(pname CHAR(30),pdescription CHAR(30),price 
DECIMAL(10,2),manufacturer CHAR(30));

INSERT INTO products VALUES
('Toys','These are toys',15.25,'ABC'),
('Dolls','These are Dolls',35.25,'PQR'),
('DustPan','These are DustPan',75.25,'AZD'),
('Doors','These are Doors',175.25,'RAZD'),
('TV','These are TV',11175.25,'RAZD'),
('Bed','These are Bed',1175.25,'ARAZD');

/** Check all data **/

SELECT * FROM products;
+---------+-------------------+----------+--------------+
| pname   | pdescription      | price    | manufacturer |
+---------+-------------------+----------+--------------+
| Toys    | These are toys    |    15.25 | ABC          |
| Dolls   | These are Dolls   |    35.25 | PQR          |
| DustPan | These are DustPan |    75.25 | AZD          |
| Doors   | These are Doors   |   175.25 | RAZD         |
| TV      | These are TV      | 11175.25 | RAZD         |
| Bed     | These are Bed     |  1175.25 | ARAZD        |
+---------+-------------------+----------+--------------+
6 rows in set (0.00 sec)

/** Order by D% **/
SELECT 
        pname, pdescription, price
    FROM
    products
ORDER BY 
CASE
    WHEN pname LIKE 'D%' THEN 1
    ELSE 2
END;
+---------+-------------------+----------+
 | pname   | pdescription      | price    |
+---------+-------------------+----------+
| Dolls   | These are Dolls   |    35.25 |
| DustPan | These are DustPan |    75.25 |
| Doors   | These are Doors   |   175.25 |
| Toys    | These are toys    |    15.25 |
| TV      | These are TV      | 11175.25 |
| Bed     | These are Bed     |  1175.25 |
+---------+-------------------+----------+
6 rows in set (0.00 sec)

Upvotes: 3

blaff
blaff

Reputation: 304

Try this, it get's the first letter from the name.

SELECT IF(company_name <> '', company_name, PC_last_name) AS name, customer_id AS id, company_name AS cn, PC_first_name AS pcf, PC_last_name AS pcl, primary_phone
FROM sales_customer
ORDER BY SUBSTRING(name, 1, 1) ASC

Upvotes: 8

bfavaretto
bfavaretto

Reputation: 71908

I think you can't use the alias for this comparison on WHERE. Try this:

SELECT  
  IF(company_name <> '', company_name, PC_last_name) AS name, 
  customer_id AS id, 
  company_name AS cn, 
  PC_first_name AS pcf, 
  PC_last_name AS pcl, 
  primary_phone 
FROM sales_customer 
WHERE IF(company_name <> '', company_name, PC_last_name) LIKE 'A%'
ORDER BY name

Upvotes: 3

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