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Is there any efficient way to query M rows starting from row N. For example, Id Value 1 a 2 b 3 c 4 d 5 e 6 f And query like this. SELECT [3,2] * FROM MyTable ORDER BY MyColumn /* hypothetical syntax */ queries 2 rows starting from 3d row, i.e 3d and 4th rows are returned.
18 cze 2024 · In this article, we used the OFFSET and LIMIT clauses in SQL queries to select the nth row from an SQL table. First, we used the ORDER BY clause to sort the data based on the column value. Then, we used OFFSET and LIMIT to select the nth row of the table.
I would want to get the rows between values of 15 and 16. Basically, if I could sort by id, then time, and gather the rows after 15 appears until there is a value of 16 within that same id. If there is no value 16, I would want the next 100 rows for example and then search for the next value of 15. I would like the query to return this:
I guess the most elegant is to use the ROW_NUMBER function (available from MS SQL Server 2005): WITH NumberedMyTable AS ( SELECT Id, Value , ROW_NUMBER () OVER ( ORDER BY Id) AS RowNumber FROM MyTable) SELECT Id, Value FROM NumberedMyTable WHERE RowNumber BETWEEN @From AND @To
A very simple way to generate @n lines is the following. DECLARE @n INT= 50 SELECT RowId = ROW_NUMBER()OVER(ORDER BY (SELECT 0)) FROM (VALUES(CAST(REPLICATE('<a/>',@n) AS XML)))xmlLines(xmlLines) CROSS APPLY xmlLines.nodes('*')Lines(Line) This method has a limit.
Is there any efficient way to query M rows starting from row N. For example, Id Value 1 a 2 b 3 c 4 d 5 e 6 f . And query like this. SELECT [3,2] * FROM MyTable ORDER BY MyColumn /* hypothetical syntax */ queries 2 rows starting from 3d row, i.e 3d and 4th rows are returned.
If someone wants to get M to N records of Dept Number instaed of Emp Number. select * from (select tmp1.*, rownum1 rnum from (select e.* from scott.emp e, scott.dept d where e.deptno = d.deptno)tmp1, (select deptno, rownum rownum1 from scott.dept)tmp2 where tmp1.deptno = tmp2.deptno and rownum1 <= :End ) where rnum >= :Start ; /
