Multiple conditions in a single query Mysql?

Question

Table Name: Price

City        Gold_Rate   Silver_Rate Date

Mumbai      3000        60      13-07-2014
Delhi       4000        50      14-04-2014
Bangalore   1400        40      16-06-2014
Mumbai      1500        58      18-09-2014
Mumbai      2500        54      19-08-2014
Delhi       1800        60      01-10-2014
Bangalore   1700        44      02-03-2014  

Expected Output will be ;

City        Gold_Rate   Silver_Rate Date

Mumbai      1500        58      18-09-2014
Delhi       1800        60      01-10-2014
Bangalore   1400        40      16-06-2014  

I need query for getting this output

can anyone help me out of this issue?

Answer 1

select City,Gold_Rate,Silver_Rate,max(Date) from Price group by City

试试这个查询。

Answer 2

It seems to me that you want your results to be fetched on the basis of minimum Gold_Rates,hence query is

select City,min(Gold_Rate),Silver_rate,Date from Price  group by City;

and if you want to fetch the result on the basis of latest date then try this,

select City,Gold_Rate,Silver_Rate,max(Date) from Price group by City;

and according to the requirements you mentioned in the comments,to be more precisely you will use this Select city, gold_rate, silver_rate,date from price where Date in (select max(Date) from price group by city);

Answer 3

select * from price where gold_rate = (select min(gold_rate) from price p where p.city = price.city);

or you can make it use of inner joins

select * from price inner join (
    select min(gold_rate) gold_rate, city
    from price
    group by city
  ) as ip on ip.city = price.city and ip.gold_rate = price.gold_rate

Both will give you the required output. Good day