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SQL select only rows with max value on a column [duplicate]
...All you need is a GROUP BY clause with the MAX aggregate function:
SELECT id, MAX(rev)
FROM YourTable
GROUP BY id
It's never that simple, is it?
I just noticed you need the content column as well.
This is a very common question in SQL: find the whole data for the row with some max value in a co...
How to use GROUP BY to concatenate strings in SQL Server?
...
[Note: This solution only works on SQL 2005 and later. Original question didn't specify the version in use.]
CREATE TABLE #YourTable ([ID] INT, [Name] CHAR(1), [Value] INT)
INSERT INTO #YourTable ([ID],[Name],[Value]) VALUES (1,'A',4)
INSERT INTO #YourTable ([ID],[Name],[Value]) VALUES (1,'B',8)
...
What is the difference between partitioning and bucketing a table in Hive ?
...xample, suppose a table using date as the top-level partition and employee_id as the second-level partition leads to too many small partitions. Instead, if we bucket the employee table and use employee_id as the bucketing column, the value of this column will be hashed by a user-defined number into ...
OnNotify函数 ON_NOTIFY消息总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...pResult)
{
NMHDR* hdr=(NMHDR*)lParam;
if( hdr->code==NM_CLICK && hdr->idFrom==IDC_BUTTON1)
{
MessageBox(L"你单击了Button1",L"消息");
}
return CDialog::OnNotify(wParam,lParam,pResult);
}
（OnNotify()不响应按钮单击事件？）
自定义WM_NOTIFY消息
习惯了用...
Correct use of Multimapping in Dapper
... ran a test that works fine:
var sql = "select cast(1 as decimal) ProductId, 'a' ProductName, 'x' AccountOpened, cast(1 as decimal) CustomerId, 'name' CustomerName";
var item = connection.Query<ProductItem, Customer, ProductItem>(sql,
(p, c) => { p.Customer = c; return p; }, splitOn:...
Get current AUTO_INCREMENT value for any table
...
Is there a reason you can't SELECT MAX(id) FROM table_name?
– Brian
Apr 8 '15 at 23:53
...
How do I create a unique ID in Java? [duplicate]
I'm looking for the best way to create a unique ID as a String in Java.
11 Answers
11
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How to get RelativeLayout working with merge and include?
...oogle.com/issues/36908001
To fix it, make sure you overwrite BOTH layout_width and layout_height when including, otherwise everything will be ignored.
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Patterns for handling batch operations in REST web services?
...ource. For example, to delete several messages at once.
DELETE /mail?&id=0&id=1&id=2
It's a little more complicated to batch update partial resources, or resource attributes. That is, update each markedAsRead attribute. Basically, instead of treating the attribute as part of each reso...
Filter dataframe rows if value in column is in a set list of values [duplicate]
...
Use the isin method:
rpt[rpt['STK_ID'].isin(stk_list)]
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