mysql - Selecting data where a column is maximum -



mysql - Selecting data where a column is maximum -

i have mysql table below.

id x y z 1 1 1 1 2 7 4 2 2 9 4 3 3 2 3 1 4 2 2 1 4 2 2 2 5 3 3 1

i want select x ( id=2 , y=4 , z maximum). have code cant understand add together max function.

$check_x=mysql_query("select x hamdun_soft id='2' , y='4'");

please help me mysql.

there right variant if need only 1 x maximum z

select x hamdun_soft id = '2' , y= '4' order z desc limit 1

and variant subquery if there may not 1 x maximum z.

select x hamdun_soft id = '2' , y = '4' , z = (select max(z) hamdun_soft id = '2' , y = '4')

p. s.

and don't forget mysql_* family of function deprecated now. can utilize mysqli_* or pdo.

mysql

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