sql-order-by

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php Mysql Grouping and Ordering user messages together

PHP Mysql Table:Messages idsenderreceivertime_sentMessageSendDel RecDel 1132011-08-17 14:00:00[text]00 2312011-08-17 15:00:00[text]00[详细]

2023-04-04 11:34 分类：问答
Indexing with GROUP BY, ORDER BY, and GROUP_CONCAT

SOLVED SEE BELOW I am trying to use both GROUP BY and ORDER BY in my query where I retrieve data sorted by difficulty. I have to use the GROUP BY because of the GROUP CONCAT since some tables such as[详细]

2023-04-04 08:14 分类：问答
MongoDB Database, order by a field which is a string field but with a number in it

I have a MongoDB and I nee开发者_C百科d to order by a field (id), but this field is a string field with a number in it.[详细]

2023-04-03 21:35 分类：问答
Slow MySQL limit select [duplicate]

This question already has answers here: Closed 11 years ago. Possible Duplicate: Why does MYSQL higher LIMIT offset slow the query down?[详细]

2023-04-03 19:34 分类：问答
Is there a speed difference in ordering by int vs. float?

When retrieving entries in a database, is there a difference between storing values as a floa开发者_JAVA技巧t or decimal vs. an int when using ORDERBY in a SELECT statement? It depends. You didn\'t sp[详细]

2023-04-03 14:42 分类：问答
Linq OrderBy GetHashCode?

ok, lets see if i can explain this. i have a List<Games> _Games = new List<Games>(); which containts 870 Games.[详细]

2023-04-03 11:09 分类：问答
MySQL - using GROUP BY and DESC

In my SQL query I am selecting开发者_如何学JAVA data with GROUP BY and ORDER BY clauses. The table has the same numbers across multiple rows with different times in each row. So I think I want to appl[详细]

2023-04-03 04:49 分类：问答
How do I order an XML export in DBUnit by primary key?

I export test data into a versioned project. To keep diffs small, I\'d like to order the exported XML data by primary 开发者_运维技巧key.[详细]

2023-04-03 01:59 分类：问答
ordering rows by data from another table

If I have two tables, First table1 : idname 1John 2Andrew 3Serj 4Mike 5Adam and Second table2 : user_idcountdate[详细]

2023-04-02 18:07 分类：问答
How to order by most results in MySQL?

I have a list of posts with associated author_ids, and I\'m selecting a list of posts where each author has at least one published post like this:[详细]

2023-04-02 07:45 分类：问答