选择条件匹配单行的行？

Question

I have two tables that are connected via a Foreign Key. In table A I'm trying to get all the rows where the data in the time column is greater than or equal to the table B start column and where the data in the time column is less than or equal to the table b end column. I was thinking that an inner join might work for this, however, the results are not what I expected. It is returning some data but they are repeating themselves.

Here is what I have:

SELECT * FROM columnA
INNER JOIN columnB
ON columnA.time >= columnB.start
OR columnA.time <= columnB.stop

Am I looking at this wrong? Is an inner join even the right way of collecting this data?

UPDATE:

Actually tableA's Foreign Key is connecting to the Primary Key on tableB. Anyways I did this:

SELECT * FROM tableA
INNER JOIN tableB
ON tableA.time >= tableB.start
AND tableA.time <= tableB.stop

The reason I didn't do what you did for the on is because the data has been in the database for a couple years now and I just recently added the column with the foreign key. So that column doesn't have any data in it yet. That's why I'm querying it so I can know which columns to update with the information. It returned the data to me but also returned other data that didn't meet the requirements.

Answer 1

You must join them using the columnName which defines their relationship and put the condition on the WHERE clause. ( not on ON clause )

SELECT a.*, b.*
FROM    tableA a
        INNER JOIN tableB b
            ON a.colName = b.colName  -- colName is the column that links 
WHERE   a.`time` >= b.`start` OR      -- both tables.
        a.`time` <= b.`stop`

Answer 2

You'll need to do your join using the foreign key, and then filter out the results that don't match your criteria.

Select * from TableA
Inner join TableB on TableA.Key = TableB.Key
Where TableA.time >= TableB.Start
Or TableA.time <= TableB.Stop

As a rule, I always keep W3Schools' sql page close at hand. It's the best quick reference for SQL functions I might have forgotten and need a quick refresher on. Also a great place to learn.

Answer 3

SELECT a.* 
FROM columnA a 
INNER JOIN columnB b ON a.joiningColumn = b.joiningColumn
WHERE a.time >= b.start
OR a.time <= b.stop

Answer 4

From your question...

where the data in the time column is greater than or equal to the table B start column  
  AND  
where the data in the time column is less than or equal to the table b end column

Yet your query has...

columnA.time >= columnB.start  
  OR  
columnA.time <= columnB.stop  

Combined with the note from others, about joining using the foreign key...

SELECT
  *
FROM
  TableA
INNER JOIN
  TableB
    ON  TableA.PK    = TableB.FK
    AND TableA.time >= TableB.start
    AND TableA.time <= TableB.stop 

Answer 5

I managed to figure out the solution by adding a WHERE to match it the data in the exact row I was looking for. Here is my solution:

SELECT * FROM tableA
INNER JOIN tableB
ON tableA.timetag >= tableB.start
AND tableA.timetag <= tableB.stop
WHERE tableB.id = "1"