top-n
SQL Query to Select the 'Next' record (similar to First or Top N)
I need to do a query to return the next (or prev) record if a certain record is not present. For instance consider the following table:[详细]
2023-04-11 02:08 分类：问答How to get the TOP N element corresponding to a condition with XPath
I have an XML like this <root> <el id=\"1\" value=\"3\"/> <el id=\"2\" value=\"3\"/> <el id=\"3\" value=\"4\"/>[详细]
2023-03-02 21:18 分类：问答PostgreSQL: How to force db use the "quicksort" sorting method instead of "top-N heapsort"?
Actually, all my question is written in subj-field. It\'s it somehow possible in PostgreSQL? Probably at server-config level, or can be configured in query, or in properties of table?[详细]
2023-02-11 01:19 分类：问答How can I select the "maximum" row from a table?
How can I select the maximum row from a table?What does maximum mean -- well my table has two timestamp columns, TIME1 and TIME2.The maximum column is the o开发者_开发百科ne with the latest value for[详细]
2023-01-12 23:36 分类：问答How to produce rank in Oracle
Need to rank the below by salary, with highest salary having rank 1. The RANK column shown is what I\'m after:[详细]
2023-01-09 22:29 分类：问答N Top Record Selection Based on Own SQL Statement in MS-Access
I\'m re-writing a small ms-access application to take examinations on. What they want is for the tests to grab a set of random questions based on how large the exam\'s size is.[详细]
2023-01-09 12:01 分类：问答Oracle SELECT TOP 10 records [duplicate]
This question already has answers here: How do I limit the number of rows returned by an Oracle query after ordering?[详细]
2022-12-23 16:07 分类：问答Oracle Analytic function for min value in grouping
I\'m new to working with analytic functions. DEPT EMPSALARY ---- ----- ------ 10 MARY100000 10 JOHN200000[详细]
2022-12-08 02:57 分类：问答
![Interactive visualization of a graph in python [closed]](https://www.devze.com/res/2023/04-10/09/92d32fe8c0d22fb96bd6f6e8b7d1f457.gif)
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