Combining two SELECT queries from same table but different WHERE clause

Question

I have a table named WORKOUTS having column named "install_time" and "local_id". Both are having column type integer. They are UNIQUE keys .I have written two queries like below :

SELECT * from workouts where install_time = 123456 and local_id > 5

SELECT * from workouts where install_time = 987643 and local_id > 19

Now I wanted to combine both these queries and one where clause to handle this condition but can't find a way for it.

EDIT

SELECT * from workouts where install_time = 123456 and local_id > 5 and date = xyz
SELECT * from workouts where install_time = 987643 and local_id > 19 and date = xyz

Answer 1

SELECT * 
FROM workouts 
WHERE 
    (install_time = 123456 AND local_id > 5 AND date = xyz)
    OR 
    (install_time = 987643 AND local_id > 19 AND date = xyz)

Also be careful when using the OR keyword. You have to put your parenthesis carefully.

Here is more info on the subject http://www.w3schools.com/sql/sql_and_or.asp

SELECT * 
FROM workouts 
WHERE 
    date = xyz
    AND (
      (install_time = 123456 AND local_id > 5)
      OR 
      (install_time = 987643 AND local_id > 19)
    )

Answer 2

SELECT * from workouts where install_time = 123456 and local_id > 5 and date = xyz
Union
SELECT * from workouts where install_time = 987643 and local_id > 19 and date = xyz

Answer 3

It depends what you mean by "combine both these queries" . If you want a result set where the results of both the above queries are returned, you can try the OR operator. The following assumes that the date field is the same for both the local_id s.

SELECT * FROM workouts
WHERE date = xyz
AND (
   (install_time = 123456 AND local_id > 5)
   OR (install_time = 987643 AND local_id > 19)
);

Answer 4

可以简单地做到

SELECT * from workout where date=xyz and (install_time = 123456 and local_id > 5) or (install_time = 987643  and local_id> 19)