For Example:
I want to compare a variable (the value is for example 100,101,102) with the content of several table columns.
So if the value of the first column is 100 the value of the second column is 101 and the value of the third column is 102, the search engine picks out the rows where this selection fits.
if the columns no.1 is 100 and the columns no.2 is 101 the row should also be shown.
But if the column no1 is 100 and the column no.2 is 101 but the column no.3 is 103 not!.
Easier:
So my search engine should go like this.
The visitor tells me which ingrediants he (or she) has in his bar and i will tell him which different cocktails he can mix.