Oracle 11g OFFSET FETCH gives error

问题

I am making a query and trying to fetch a random number of rows from a database but Oracle keeps telling me my command has not been ended properly.

select *
from random_table
order by random_column_name
offset 0 rows
fetch first 10 rows only

This is the code I'm using.

I would greatly appreciate any support since I've spent quite some time searching for an explanation for the outcome I'm getting, but to no avail.

回答1:

That syntax isn't valid until Oracle Database 12c.

You would say instead

select *
from random_table
where rownum < 11
order by random_column_name;

回答2:

MSSQL:

offset 10 rows fetch first 10 rows only

Oracle:

select *
from random_table
order by random_col
where rownum >= 10 and rownum < 20

回答3:

Oracle (works on the versions before 12c):

select *
from (
  select *, rownum rn
  from (
    select *
    from random_table
    order by random_col) t
  where rownum <= 20) f
where rn > 10

回答4:

None of the above worked for me in Oracle 11.2, so here's another way

select * from (
  select random_table.*,
         row_number() over (ORDER BY update_date DESC) line_number
   FROM random_table where status = 100
) WHERE line_number between 5 AND 10

In the example above, I've added filtering on my status and ordering by my latest update_date, but could be anything.

Here the pagination is determined by start point (5) and end point (10), shown above. This makes it easy to calculate based upon page number and page size (page 2 with page size 5 in this case), if needed.

回答5:

I did it this way, so I can do an orderly search and I don't risk not seeing any results.

WITH lista AS(SELECT *
            FROM random_table
           ORDER BY random_column_name)
SELECT *
  FROM lista
 WHERE ROWNUM <= 10;

来源：https://stackoverflow.com/questions/37836391/oracle-11g-offset-fetch-gives-error

标签

sql

Oracle

oracle11g