Hello list :)
I am developing an application that will show records in paginated
documents, i.e. 10 records per page
Lets supose this row structure
MyTable
ID(autoincrement) SectionID Name Description
The ID is automatic autoincrement for unique records, the SectionID is to
separate items into different sections.
If I query a particular SectionID rows it should return all those rows.
If I use "LIMIT x,10" it should return 10 rows beginning at record #x, but
my doubt is:
Does the OFFSET x assumes its value to be #x number of consecutive rows,
or
it is relative to the query results?
For example
ID SID name description
------------------------------------------
01 01 nameA descriptionA
02 02 nameB descriptionB
03 01 nameC descriptionC
04 02 nameD descriptionD
05 02 nameE descriptionE
06 01 nameF descriptionF
07 02 nameG descriptionG
08 01 nameH descriptionH
09 02 nameI descriptionI
10 02 nameJ descriptionJ
------------------------------------------
If I do
SELECT name from MyTable SID where SID='02' LIMIT 1,2 (offset 1, 2
elements)
it should return: nameB, nameD
theni f I do
SELECT name from MyTable SID where SID='02' LIMIT 3,2 (offset 3, 2
elements)
it should return: nameE, nameG
and if I do
SELECT name from MyTable SID where SID='02' LIMIT 3,2 (offset 5, 2
elements)
it should return: nameI, nameJ
Is it correct? My doubt is if the OFFSET is relative to the SELECT results
(to ignore the # first result rows) that match the condition SID='02'
only,
to show 2 by 2 records (or N by N)...
Just by trying the above statement, you could have figured out the answer in
probably less time than the time it took you to write this message :-)
With regards,
Martijn Tonies
Upscene Productions
http://www.upscene.com
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