MySQL select before after row

Question

This is the example table:

Column             | 1st record | 2nd record | 3rd record | 4th record | etc<br />
id (primary)       | 1          | 5          | 8          | 12         | etc<br />
name               | name 1     | name 2     | name 3     | name 4     | etc<br />
date               | date 1     | date 2     | date 3     | date 4     | etc<br />
callValue (unique) | val1       | val2       | val3       | val4       | etc

I select one row that is the data to show (for example: row with callValue: val3). But I cannot find a solution for this:
I need to select previous and next row. So, in this example, I need to get data from rows callValue: val4 and callValue: val2, or id: 5 and id: 12.

It cannot be done with id=id+-1 because id doesn't have to be continuous because of deleting rows.

Answer 1

Try this:

select * from test where callValue = 'val3'  
union all  
(select * from test where callValue < 'val3' order by id desc limit 1) 
union all  
(select * from test where callValue > 'val3' order by id asc limit 1) 

or

select * from test where id = 8
union all  
(select * from test where id < 8 order by id desc limit 1) 
union all  
(select * from test where id > 8 order by id asc limit 1) 

Answer 2

Once you have the id 8, you should be able to do a variation on:

select * from mytable
where id < 8
order by id desc
limit 1

and:

select * from mytable
where id > 8
order by id asc
limit 1

for the previous and next record.