Multiple select statements for mysql search query

问题

can i use select statements for different tables in a single query

SELECT *
FROM users
WHERE first_name LIKE "%'.$search_string.'%"
   OR last_name LIKE "%'.$search_string.'%"

thats from the table ' users' , i want to do the same search on another table called sellers. sellers have the same fields first_name, last_name

回答1:

Yes, you can

Select column1,column2,column3,column4
From table1,table 2
Where Conditions

If you want to do join between tables, check if theirs PK and FK are equals Eg:

Select table1Id,table2Id,column3,column4
From table1 t1,table2 t2
Where t1=t2 

来源：https://stackoverflow.com/questions/19754965/multiple-select-statements-for-mysql-search-query