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Using MySql, can I sort a column but have 0 come last?

开发者 https://www.devze.com 2023-01-05 02:53 出处:网络
I want to sort by an column of ints ascending, but I want 0 t开发者_JS百科o come last. Is there anyway to do this in MySql?You may want to try the following:

I want to sort by an column of ints ascending, but I want 0 t开发者_JS百科o come last. Is there anyway to do this in MySql?


You may want to try the following:

SELECT * FROM your_table ORDER BY your_field = 0, your_field;

Test case:

CREATE TABLE list (a int);

INSERT INTO list VALUES (0);
INSERT INTO list VALUES (0);
INSERT INTO list VALUES (0);
INSERT INTO list VALUES (1);
INSERT INTO list VALUES (2);
INSERT INTO list VALUES (3);
INSERT INTO list VALUES (4);
INSERT INTO list VALUES (5);

Result:

SELECT * FROM list ORDER BY a = 0, a;

+------+
| a    |
+------+
|    1 |
|    2 |
|    3 |
|    4 |
|    5 |
|    0 |
|    0 |
|    0 |
+------+
8 rows in set (0.00 sec)


You can do the following:

SELECT value, IF (value = 0, NULL, value) as sort_order
FROM table
ORDER BY sort_order DESC

Null values will be down of the list.


SELECT * FROM your_table ORDER BY 0.1/your_field;


The following query should do the trick.

(SELECT * FROM table WHERE num!=0 ORDER BY num) UNION (SELECT * FROM table WHERE num=0)
0

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