The Oracle/PLSQL MAX function returns the maximum value of an expression. Syntax The syntax for the MAX function in Oracle/PLSQL is: SELECT MAX(aggregate_expression) FROM tables [WHERE conditions]; OR the syntax for the MAX function when grouping the results by one or more columns is: SELE...
在函数中使用min和max函数是一种常见的编程技巧,用于获取一组数据中的最小值和最大值。 min函数用于返回一组数据中的最小值。它接受多个参数,可以是数字、字符串或其他可比较的数据类型。例如,对于数...
The SQL MAX function returns the maximum value of an expression. The syntax for the SQL MAX function is: SELECT MAX(expression) FROM tables WHERE predicates; SQL MAX Function - Single field example The simplest way to use the SQL MAX function would be to return a single field that calculate...
Solution #1: My first thought was to unpivot these columns and use max function to get the latest date for each row. Since you cannot easily take the max value of multiple columns in a table, we can use the unpivot function to accomplish this. To include all NULL ...
lower bound/ upper bound 可以是具体的timestamp/scn, 也可以是关键字minvalue/maxvalue. 这些关键字让Oracle去找到所有的versions, 当然这要受制于undo_retention参数设置的大小,毕竟这部分信息是放在undo segment上的。 Oracle 10g提供了一些pseudo-columns来帮助我们分析每个version的数据, ...
Sql - Max function with CASE, See this Max () Function. Definiton and Usage : The MAX () function returns the largest value of the selected column. Simple Case : SELECT MAX (Case when Price not null then Price else 0 end) AS LargestPrice FROM Products; When use in Case like example...
The Users table includes the columns id and username. The Users_meta table includes the columns user, meta and value. Metas include “first_name”, “last_name” and “user_level”. The actual code includes more MAX(CASE WHEN lines and the HAVING statement changes depending on the search ...
common function for check session value MVC controller Compare List with a Datatable compare textbox value with a column in sql Compare two list of objects using Linq Compare user input to rows in my data table... C# Comparision between Datagridview and gridview Compilation Error - Make sure ...
Re: How do I get multiple columns with MAX SQL function? of course it's a scalar function... what else would it do? It returns the MAXimum value of that field based on the grouping... so if I have this: Code: ID -- Color -- Count 1 Blue 50 2 Green 20 3 White 10 4 Whi...
ORACLE查询表最近更改的数据 VERSIONS BETWEEN TIMESTAMP MINVALUE AND MAXVALUE 今天开发人员问我如何快速并方便的查出一张表最近被更改的记录,这个需求很简单,由于是查最近被更改的数据,查回滚段就可以,下面是我做的小实验。SQL> create table test(id number,name varchar2(10),gender varchar2(5));表已创建...