aggregation

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Pivot/aggregation with percentage columns possible in t-sql?

Struggling with this a bit in SQL Server, any ideas?Given this data (ID is an INT, the rest are BITs):[详细]

2023-01-28 13:21 分类：问答
Exposing aggregation through the interface vs. delegation

I have an Employee object which aggregates a few other objects, such as HRData and AssignmentHistory. In the past all of this logic was contained directly in the Employee object, but for testability a[详细]

2023-01-22 14:54 分类：问答
Aggregate bitwise-OR in a subquery

Given the following table: CREATE TABLE BitValues ( n int ) Is 开发者_StackOverflowit possible to compute the bitwise-OR of n for all rows within a subquery? For example, if BitValues contains thes[详细]

2023-01-20 20:59 分类：问答
get data for one semester in mysql

dear all..i want to make some report which get data for one semester. this semester started at april and finished at september in each year.[详细]

2023-01-17 22:08 分类：问答
Missing artifact when building child project with Maven 2

I have a parent project with 5 children having also dependencies between each other. I used both inheritence with <parent> element in the children pom.xml and aggregation with <module> ele[详细]

2023-01-14 04:30 分类：问答
how to create a news aggregator?

Planning to start a small aggregator for a personal project, so far I have a few inquiries on gathering information for the site. I\'m still clueless on where to begin. what kind of infrastructure do[详细]

2023-01-13 22:02 分类：问答
Pentaho Aggregation Designer: Are the aggregation names generated usable

I have used the aggregation designer to generate some tables. I just wanted to know is there anything else I have to modify in the cube definition开发者_JAVA技巧 xml? Currently it look likes the aggna[详细]

2023-01-12 01:38 分类：问答
Does the Derived class need diamond link?

If, for example, I have the following requirements: 1. Dog is an Animal 2. Zoo has Animal(s) Do I still need the 2nd diamond connector (the lower one) as shown here:[详细]

2023-01-07 06:39 分类：问答
de-normalization, weighted aggregates for updated tables in MySQL

this time I got a more general question. Should I use multiple views rather than stored procedures for weighted a开发者_Python百科ggregation of data, if the original data is updated periodically?[详细]

2023-01-06 17:22 分类：问答
Composition, aggregation and DI

Aggregation: the object exists outside the other, is created outside, 开发者_C百科so it is passed as an argument (for example) to the construtor. Ex: People – car. The car is create in a different co[详细]

2022-12-31 10:01 分类：问答