WebFeb 28, 2024 · Limits the rows returned in a query result set to a specified number of rows or percentage of rows in SQL Server. When you use TOP with the ORDER BY clause, the result set is limited to the first N number of ordered rows. Otherwise, TOP returns the first N number of rows in an undefined order. Use this clause to specify the number of rows ... WebORDER BY 关键字用于对结果集按照一个列或者多个列进行排序。 ORDER BY 关键字默认按照升序对记录进行排序。 如果需要按照降序对记录进行排序,您可以使用 DESC 关键字。 SQL ORDER BY 语法 SELECT column1, column2, ... FROM table_name ORDER BY column1, column2, ... ASC DESC; column1, column2, ... :要排序的字段名称,可以为多个字段。 …
sql server - SELECT TOP 1 from a very large table on an index …
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SQL ORDER BY - W3School
WebThe basic syntax used for writing the ORDER BY DESC clause is as follows : SELECT column_name_1, column_name_2 FROM table_name ORDER BY column_name_1 DESC; … WebMar 5, 2013 · FROM [Devices] as dv OUTER APPLY ( SELECT TOP 1 * FROM Heartbeats WHERE Heartbeats.DeviceID = dv.ID ORDER BY DateEntered DESC ) hb WHERE ISNULL (hb.DateEntered, '1900-01-01T00:00') < '2013-03-04T00:00' See Books Online for the finer points of OUTER APPLY vs. CROSS APPLY (it's much like OUTER JOIN vs. INNER JOIN ). WebApr 12, 2024 · Select top 1 Desc from order by Create desc. also tried group by order by desc and got varying results but not what is needed. sql-server; Share. Follow asked 2 mins ago. Aaa a12 Aaa a12. 1. New contributor. Aaa a12 is a new contributor to this site. Take care in asking for clarification, commenting, and answering. shantanu rege oberoi realty