Check their own (in can not use limit)
rank ordering, acquiring ranking
set @ rank = 0; define a variable
: Identity value =
= Determining whether the same
Is equal to a condition before performing
After performing an unequal condition
Check their own (in can not use limit)
rank ordering, acquiring ranking
set @ rank = 0; define a variable
: Identity value =
= Determining whether the same
Is equal to a condition before performing
After performing an unequal condition