WebMay 11, 2014 · I think the best way to get this is to use a subquery as the rownum is being looked at before the order by so: select * from ( SELECT DISTINCT name, age FROM … WebFeb 19, 2007 · In a query where I group by a field, I would like to select the first values from a specific row. I have using something like: select distinct a.name, first_value(c.task) over (partition by a.name order by c.task_code asc) as task_code, first_value(e.code_subject) over (partition by a.name order by c.task_code asc) as code_subject from .....
SQL SELECT TOP, LIMIT, FETCH FIRST ROWS ONLY, …
WebFeb 4, 2024 · Oracle SQL - Fetch First n Rows Examples You can use the FETCH FIRST clause to get the first/top n rows in Oracle. Below is an example: SELECT order_no, … WebJul 22, 2008 · I only want to update the first 20 rows in a table that match a certain condition. Here is the sql I have which is not working: UPDATE random_numbers (SELECT ROWNUM, randomnum, flag FROM random_numbers where flag='N') SET flag = … dana armstrong from camp hill pa
How to select the top-N rows per group with SQL in Oracle Database
WebAnswer: When you try to select first 10 rows from a table, you must remember that Oracle does not store rows "first" or "last"! The concept of a "First Row " is only valid if we … WebSep 21, 2016 · This is Oracle 11.2.0.4, no upgrade to 12c before long.I have a table with 944 milions rows with columns set as :table TRANSACT ( FDATE NOT NULL varchar2 (8), -- a string format YYYYMMDD, on avg 1.3 millions rows every day TX_ID NOT NULL varchar2 (30), -- transaction id absolutely unique string of 30 char TX_ID_SEQ NOT NULL number, -- … WebSep 14, 2024 · select * -- column names as required! from ( select id_, name_, date_ , row_number () over ( partition by name_ order by date_ ) rn_ from test ) where rn_ = 1 ; -- output ID_ NAME_ DATE_ RN_ 1 Test1 09/14/2024 1 4 Test2 01/10/2024 1 dbfiddle Share Improve this answer answered Sep 16, 2024 at 6:38 stefan 2,477 1 8 10 Add a comment … dana arthur helen of troy