问题
Please I want to select data from a table, where a specific field has the min value, I've tried this :
SELECT * FROM pieces where min(price)
I'm not good with MySQL, please any help ? Thanks
回答1:
this will give you result that has the minimum price on all records.
SELECT *
FROM pieces
WHERE price = ( SELECT MIN(price) FROM pieces )
- SQLFiddle Demo
回答2:
This is how I would do it (assuming I understand the question)
SELECT * FROM pieces ORDER BY price ASC LIMIT 1
If you are trying to select multiple rows where each of them may have the same price (which is the minimum) then @JohnWoo's answer should suffice.
Basically here we are just ordering the results by the price in ASCending order (increasing) and taking the first row of the result.
回答3:
Use HAVING MIN(...)
Something like:
SELECT MIN(price) AS price, pricegroup
FROM articles_prices
WHERE articleID=10
GROUP BY pricegroup
HAVING MIN(price) > 0;
回答4:
In fact, depends what you want to get: - Just the min value:
SELECT MIN(price) FROM pieces
A table (multiples rows) whith the min value: Is as John Woo said above.
But, if can be different rows with same min value, the best is ORDER them from another column, because after or later you will need to do it (starting from John Woo answere):
SELECT * FROM pieces WHERE price = ( SELECT MIN(price) FROM pieces) ORDER BY stock ASC
回答5:
This also works:
SELECT
pieces.*
FROM
pieces inner join (select min(price) as minprice from pieces) mn
on pieces.price = mn.minprice
(since this version doesn't have a where condition with a subquery, it could be used if you need to UPDATE the table, but if you just need to SELECT i would reccommend to use John Woo solution)
回答6:
Efficient way (with any number of records):
SELECT id, name, MIN(price) FROM (select * from table order by price) as t group by id
回答7:
To make it simpler
SELECT *,MIN(price) FROM prod LIMIT 1
- Put * so it will display the all record of the minimum value
来源：https://stackoverflow.com/questions/13357144/mysql-how-to-select-data-where-a-field-has-a-min-value