W.: Introduction to Query Processing. In: Kim, W.; Reiner, D.; Batory, D. (eds.): Query Processing in Databases. Springer Verlag, Berlin, 1985, pp. 3{28.M. Jarke, J. Koch, and J. W. Schmidt, "Introduction to Query Processing," in Proceedings of Query Processing in Database ...
Since we’re starting a new blog for the whole query processing team, we think it’s appropriate to start with an introductory post about query processing as a whole and what we’ll be talking about in this blog. If you’re unfamiliar with the way SQL Server processes its queries...
It is aimed for technologists, managers, and developers who want to know more about emerging trends in advanced query processing. Catania, Barbara; Jain, Lakhmidoi:10.1007/978-3-642-28323-9_1Barbara CataniaLakhmi JainSpringer Berlin Heidelberg...
(one that processes more data) in about the same amount of time as a smaller query (i.e., scale up) by increasing the number of CPUs used in processing the query. For most large queries SQL Server generally scales linearly or nearly linearly. For speed up, this means that if we ...
or update a query that accesses the data. By using one .odc file saved in a DCL, administration of this connection information is much easier and the user's access to data is more convenient because all workbooks use the same connection file and a refresh operation, whether o...
Once a tablespace has been selected for spilling during query processing, there is no switching to another tablespace. For example, if a user has a shared temporary tablespace assigned and during spilling it runs out of space, then there is no switching to an alternative tablespace. The spilling...
However, what's really going on is quite a bit more complex than what the previous samples illustrate. The compilers and the common language runtime (CLR) do a lot of behind-the-scenes processing to hide this additional complexity. In this section, I'll focus on how the compiler and CLR...
Query understanding treats the query as first-class. It makes queries the focal point of the search process. Much of query understanding takes place before retrieving a single result, although it’s possible to perform post-retrieval analysis for validation. But query understanding isn’t about det...
The XML schemas are used to validate the data, perform more precise type checks than untyped XML during compilation of query and data modification statements, and optimize storage and query processing.Typed-XML columns, parameters, and variables can store XML documents or content fragments, which ...
Compressed indexes can be superior to uncompressed indexes not only in disk usage but also in query processing speed (Scholer et al. 2002). Compared with VB codes, "variable nibble" codes showed 5% to 10% better compression and up to one-third worse effectiveness in one experiment (Anh and...