WebJul 19, 2005 · AND ROWNUM = 1 ORDER BY COL2; (index on COL1, COL2) Pro*C does not process the "ORDER BY" statement. How can I achieve the above Thanks Sandra If the … WebIf you embed the ORDER BY clause in a subquery and place the ROWNUM condition in the top-level query, then you can force the ROWNUM condition to be applied after the ordering …
SQL : How to use Oracle ORDER BY and ROWNUM …
WebMay 2, 2012 · SELECT * FROM MyTable WHERE Status=0 AND ROWNUM <= 10 ORDER BY StartTime DESC SELECT * FROM ( SELECT * FROM MyTable WHERE Status=0 ORDER BY … WebFeb 28, 2024 · The Oracle ROWNUM pseudocolumn returns a number indicating the order in which a row was selected from a table. The first row selected has a ROWNUM of 1; the … cscs blue skilled worker mock test
SQL SELECT TOP, LIMIT, FETCH FIRST ROWS ONLY, ROWNUM
WebJan 6, 2024 · ROW_NUMBER is an analytical function that assigns a number to each row according to its ordering within a group of rows. Row_Number generates sequence of numbers after performing sorting operation on specific column (order by clause on a column) Row_Number cannot be used in where clause.It can used to filter only after … WebJul 2, 2016 · Top N order by query is slow Hi Tom,I'm trying to retrieve the last 20 rows by time for users with more than 100K rows in a table with more than 1 million records. The query performance is fine (in ms) when the user has a small number of records. But takes more than 2 minutes from the application to fetch 20 records for use WebMar 29, 2024 · select * from (select * from table1 t order by AAA) where rownum > 4 and rownum <= 8; 来得到结果,可是前面说过,任何使用rownum大于一个数据的查询,都不会返回任何的结果集。 那我们又如何才能得到我们期望的结果呢? 这就要使用一点技巧了,先使用: sql select * from (select * from table1 t order by AAA) where rownum <= 8; 返回排 … cscs book online free