aggregate-functions

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Creating a aggregation function on Oracle 10g returning unhelpful error

I\'ve got some help and was led to this page and this explanation, which should contain a efficient way to aggregate things.[详细]

2023-04-07 06:57 分类：问答
Using SQL to Aggregate and Calculate Stats

I have shoot \'em game where users compete against each o开发者_StackOverflow社区ther over the course of a week to accumulate the most points. I want to write a query that aggregates statistical data[详细]

2023-04-07 04:45 分类：问答
How to select maximum per column-value in SQL?

In SQL Server, I have a list of integers, datetimes, and st开发者_如何学JAVArings. For example,[详细]

2023-04-06 23:00 分类：问答
How to average/sum data in a day in SQL Server 2005

I\'m trying to average data in SQL Server 2005 in a day. Here is what my database look like this if I use simple query as[详细]

2023-04-05 16:24 分类：问答
Sql query to return elements with same ID as comma separated string

I have two tables, table1 has a entry_ID, entry_date and other entry information. table2 has entry_ID and entry_subject. Each entry_ID can have arbitrarily many entry_subjects.[详细]

2023-04-05 12:58 分类：问答
SELECTing "first" (as determined by ORDER BY) row FROM near-duplicate rows (as determined by GROUP BY, HAVING, COUNT) within SQLite

I have a problem which is a bit beyond me (I\'m really awfully glad I\'m a Beta) involving duplicates (so GROUP BY, HAVING, COUNT), compounded by keeping the solution within the standard functions tha[详细]

2023-04-04 13:35 分类：问答
MySQL aggregate function problem

In the following example, why does the min() query return results, but the max() query does not? mysql> create table t(id int, a int);[详细]

2023-04-02 12:19 分类：问答
MySQL sum + inner join query

Question: Table 1: id.1 | name.Joe | etc.Some | ...Other | ...Data Table 2: id.X | number.+1 123 555 9999 | useridfromtable1.1 -> Linking telefone with Joe[详细]

2023-04-01 02:46 分类：问答
MySQL COUNT function not performing as I would like in multiple joined query

I have been altering a query for a while now, reading many posts on this wonderful site to get to where I am with this so far.But, alas, now I am stuck :([详细]

2023-03-31 04:16 分类：问答
MySql Query Help needed

I have a table with comments. These comments are related to another table of questions, through 1-to-many relation, i.e. 1 question to many comments. Now, I want a list of 5 questions with the maximum[详细]

2023-03-31 01:19 分类：问答