Primary index: in a sequentially ordered file, the index whose search key specifies the sequential order of the file. Also called (). A. clustering index B. Secondary index C. non-clustering index 相关知识点: 试题来源: 解析 A 考察primary index ...
1. (in a printed work) an alphabetical listing of names, places, and topics along with the numbers of the pages on which they are mentioned or discussed. 2. a sequential arrangement of material, esp. in alphabetical or numerical order. 3. something used or serving to point out; indica...
Queries in which a sequential search is specified, such as WHERE ProductID BETWEEN 980 and 999, would benefit from a clustered index on ProductID. This is because the rows would be stored in sorted order on that key column. Defined as IDENTITY. Used frequently to sort the data r...
Search ScienceDirect Chapter contents Book contents Outline A B C D E F G H I J K L M N O P Q R S T U V W ZResearch in Medical and Biological Sciences From Planning and Preparation to Grant Application and Publication 2015, Pages 547-566Index...
SEARCH statement NLSSORT phrase NO LOCK phrase and DELETE statement (1), (2) and REWRITE statement READ statement START statement NO REWIND phrase, OPEN statement nonnumeric null-terminated nonnumeric literal characters valid in hexadecimal mixed SBCS and DBCS characters nonnumeric...
If a heap-organized table has no indexes, then the database must perform afull table scanto find a value. For example, aqueryof location2700in the unindexedhr.departmentstable requires the database to search every row in every block. This approach does not scale well as data volumes ...
In this REST API quickstart, learn how to create an index, load data, and run queries by using PowerShell's Invoke-RestMethod and the Azure AI Search REST API.
MATCH({"A"; "B"; "A"; "C"; "B"; "A"}, "A", 0) and returns {1; #N/A; 1; #N/A; #N/A; 1}. If a value is equal to the search value MATCH function returns 1. If it is not equal the MATCH function returns #N/A. The picture above displays the array in column ...
products in theProduction.Producttable in the AdventureWorks2008R2 database. Queries in which a sequential search is specified, such as WHERE ProductID BETWEEN 980 and 999, would benefit from a clustered index onProductID. This is because the rows would be stored in sorted order on that key ...
For index requests, indicates the sequence number (the database row) of the index request in the table. For a subclass of CmAbstractSequential, indicates the sequence number of the entry inserted in the table. The sequence number can be used to process entries in the order they were create...