Question

Hi i have a mysql query with multiple conditions to check, so I’m using () to separate each one, for example:

WHERE (a='string' AND b='string') OR (a='otherstring' AND b='otherstring)

The problem I have is that I have to add a user check, si I don’t know if I have to use () again, for example, is this correct?

WHERE ((a='string' AND b='string') OR (a='otherstring' AND b='otherstring)) AND (id='1') 

Thanks!

Answer 1

WHERE 
    (
        (a='string' AND b='string') 
        OR (a='otherstring' AND b='otherstring')
    ) 
    AND id='1'

This will find all records with an id of 1 and where a.string=b.string or a.string=otherstring.

Edit: just for extra clarification:

Basically, anything inside of brackets is equated together for example:

// Condition 1
(
    this=somethingelse
    and this2=somethingelse2
)
// Condition 2
and
(
    someCondition=anotherConidition
    and
    // Condition 3
    (
        thirdCondition=anotherCondition3
        or thirdCondition2=anotherCondition4
    )
)

in this example. both clauses in condition 1 have to be met. Condition 2 also has to be met and inside that one, someCondition HAS to equal anotherCondition as well as one of either of the statements in Condition 3.