Hi All!
In one of my application, I would like to implement incremental fetching. The problem is that I would like to run it from a stateless application server, so I have to tell where to begin fetching data. It is simple for a table which has single column primary key, but causes difficulties (at least for me) in a more-column primary key..
Let say I have a table wich has the primary key: itemkey,location
table1 ------ itemkey location ... --------
select * from table1 LIMIT x
gives me the first x row of the result. After that, I save the last value, and next time, I adjust the query as
select * from table1 where itemkey>:lastvalue LIMIT x
that should be enough for an 'Item' table, but I have another column in the primary key.
let say, I have the following in Table1:
itemkey location ------------------------ 00001 00001 00001 00002 ... 00005 00001 00005 00002 00005 00003 <--- lets say this is the last value
next time i want to run a query, which starts from
00005 00004 00006 00005
and so on..
How can I specify that in sql? I dont want to use cursor:), I would like to do it in plain sql. (It it is possible).
Thank you in advance
Andras Kutrovics
maybe the OFFSET keyword will help here?
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