mysql查询使用AND和OR的子句

Question

Can someone help me with this query:

 SELECT SQL_CALC_FOUND_ROWS * 
          FROM Punches
          WHERE Serial LIKE '%123%'
          OR Badge LIKE '%123%'
          OR Search_Date LIKE '%123%'
          OR Punch_Time LIKE '%123%'
          OR Device_Name LIKE '%%'
          AND Company_ID = '0002'
          LIMIT 0, 20

Essentially I want to search all these fields that are LIKE 123 BUT have to have Company_ID = '0002'. This query returns rows that do not have a Company_ID = '0002'

Answer 1

Try this...

 SELECT 
    SQL_CALC_FOUND_ROWS * 
 FROM 
    Punches
 WHERE 
    (Company_ID = '0002') AND 
    (Serial LIKE '%123%'
     OR Badge LIKE '%123%'
     OR Search_Date LIKE '%123%'
     OR Punch_Time LIKE '%123%'
     OR Device_Name LIKE '%%')
 LIMIT 0, 20

Answer 2

1) AND has a higher priority than OR . Just add parentheses:

SELECT SQL_CALC_FOUND_ROWS * 
          FROM Punches
          WHERE (... OR ... OR ...)
          AND Company_ID = '0002'
          LIMIT 0, 20

2) Device_Name LIKE '%%' is always true.