olap cube sql server

a clustered index on the view to make it an INDEX view create unique clustered index IndexPOView ON POView (PurchaseOrderID) GO You can compare the query statement with the execution plan of the query index view. The index view provides better query performance: The SQL Server Query Optimizer always tries to find the best execution plan. Sometimes, although you have created an index view, the optimizer s

three types of text, we recommend that you define all the character types as nchar and nvarchar. The above is all about the basic concepts of SQL Server sorting rules in this article, and I hope to help you. If you are interested, you can continue to refer to this site: Talking about the uncertainty of float under sqlserver, cube in SQLserver: Details of multi-d

server, and is the basic standard protocol. Activates new types of applications and facilitates the development of applications that integrate real-time operational analysis and can be accessed through any platform and language. • Enterprise Features The SQL Server 2005 Analytics Service sets new standards for business intelligence servers in terms of scalabilit

Existing table A, which reads as follows: Number of encoded warehouses 6 b 7 a 8 B 9 Now you want to query this format by encoding: 6 b 7 Summary subtotal: 8 B 9 Summary subtotal: 17 Q: How do I achieve this? At first glance, it seems easy to use group by as if it can be achieved? But after careful study, you will feel that group by is powerless, the total lack of something, no way t

)2. Global Variables (VariableOutput statementLogical control Statements1. If-else Judgment Statement2. While...continue...break Loop statement3. Case4. Other statementsSQL Server T-SQL advanced queryBasic Common QueriesNested subqueries# from (SELECT ... table) example# in, no in clause query example# exists and NOT EXISTS clauses query example# Some, any, all clause query exampleAggregate queries1. Distin

/analysisservices/2003/engine" > Object > Databaseid > Adventure works dwx 2012 Databaseid > Object > File > C: \ Bak \ adventure works DW 2012.abf File > Backup > Restore Xmlns = "Http://schemas.microsoft.com/analysisservices/2003/engine" > File > C: \ Bak \ adventure works DW 2012.abf File > Databasename > Adventure works dwx 2012 Databasename > Allowoverwrite > True Allowoverwrite > Security > Ignores

uses the index on the original table, and you can use the with NOEXPAND to force the index on the indexed view (not the index on the original table).Indexed views are supported on each version number of SQL Server 2012. Query processors in the development or Enterprise editions can even optimize queries that match indexed views.The indexed view must be built with the with SCHEMABINDING to ensure that the f

There are many reasons for slow query speed in SQL Server databases. The following are common causes: 1. No index or no index is used (this is the most common problem of slow query and is a defect in programming) 2. Low I/O throughput, resulting in a bottleneck effect. 3. the query is not optimized because no computing column is created. 4. Insufficient memory 5. slow network speed 6. The queried data volum

proceduresSQL Server Transact-SQL programmingVariable1. Local variables (locally Variable)2. Global Variables (VariableOutput statementLogical control Statements1. If-else Judgment Statement2. While...continue...break Loop statement3. Case4. Other statementsSQL Server T-SQL advanced queryBasic Common QueriesNested sub

The most obvious feature of SQL differs from other programming languages is the order in which the code is processed. In a large number programming language, code is processed in encoded order, but in the SQL language, the first processed clause is the FROM clause, although the SELECT statement first appears, but is almost always finally processed.Each step produces a virtual table that is used as input to

in 4.Figure 4. The same statement, different conditions, has two different execution plan cachesWe know that the execution plan cache relies on the query statement itself to discriminate the cache, so the above two statements are treated as two different statements in the execution plan cache. The solution to this problem is to make the query statements in the execution plan cache identical.Parameterization of so that only some parameters are different, and the query itself is the same statemen

cause high I/O to be useful. But this is not the same as the effect in Sans.Disk Configuration/Best practices:As a general rule, you should store log files and data files separately for better performance. The I/O characteristics for heavy-load data files (including tempdb) are random reads. For log files, sequential access is required, unless the transaction needs to be rolled back.The built-in disks can only be used for database log files because they have good performance for sequential I/O,

opackage = DTSGlobalVariables.parent ' Gets the data connection object in the package set oconnection = Opackage.connections ("Dbcon Nection ")" Configure data connection information for the data source object If bdbusetrusted Then oconnection.usetrustedconnection = bdbusetrusted Else Oconnection.userid = SdbuseRID Oconnection.password = sDBPassword end If Oconnection.datasource = Sdbdatasource Oconnection.catalog = SDBCatalog Set oconnection = Nothing ' configuration with much information, her

Setup and configuration of php + SQL Server Apache + php + mysql in windows Setup and configuration of php + SQL Server Apache + php + mysql in windows Php is fast and secure because of its high execution speed (compared with asp, it cannot be better than jsp. ICBC uses jsp or Microsoft to help it ). Because iis requi

many execution plans that lead to too many objects in the Same Bucket after the hash, additional buckets are required, which may lead to low cache efficiency of the search plan. The solution is to minimize the number of plans in the Plan cache, which will be discussed later in this article. Figure 2. HashTable information about the storage plan Cache When this problem occurs, we can see the problem in the buckets_avg_scan_miss_length column. In this case, the Cache Hit rate (

Tags: using IO ar data problem on ad EF CAnother benefit of creating an index on a view is that the query optimizer begins to use the view index in the query instead of commanding the view directly in the FROM clause. As a result, data can be retrieved from an indexed view without recoding, and the resulting efficiencies also benefit existing queries. The first index created on the view must be a unique clustered index. After you create a unique clustered index, you can create additional nonclus

extent squeeze the living space of Businests, Hyperion and other BI vendors. With the first anniversary of SQLServer2005 's listing in China, Microsoft has proven its advantages and value in high-end applications. And in the enterprise market, the software giant has given the answer in its own way. Low prices depress competitors Due to "the reputation of the tired", Microsoft (China) Co., Ltd. Deputy general Manager, server product director Sun Ji

Label:Today will introduce SQL Sever open window function, what is the window function, do not understand it. Anyway, for me, I was puzzled, and I heard it for the first time. So, what is the window function, in fact, can be understood as a reinforcing version of the aggregation function. Because the aggregate function is used (excluding the case of subqueries), the entire query can only be the aggregate column return value, not the return value of th

added to the VT2 as outer rows, generate T3 if the from contains more than two tables, Repeat the steps and steps for the result table and the next table generated by the previous junction to end directly.4. Where: Apply a where filter to vt3 only rows that make where_condition true are inserted VT45. GROUP BY: Groups the rows in the VT4 by the list of columns in the GROUP BY clause VT56. cube| ROLLUP: Inserting a Hyper-group (supergroups) into VT6,

Today, when you write a statement, you execute it inside the Query Analyzer To use the 10s, another way of writing is only less than 1s time, colleagues say because of the sequence of SQL sentence execution reasons. I've seen a little bit before. Close the book, have a little impression, to find information on the Internet, under study. Logical query Processing steps Copy CodeThe code is as follows: (8) SELECT (9) DISTINCT (one) (1) From (3) (2) on (