20.11.2015 Views

Data Mining Extensions - DMX - Reference

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

ut that are reserved words forSQL Server 2005 Analysis Services. You can use a<br />

delimited identifier to refer to such an object until you can change the object's name.<br />

• When you use characters that are not listed as qualified identifiers.<br />

In Analysis Services you can use any character in the current code page in a delimited<br />

identifier; however, indiscriminate use of special characters in an object name may<br />

make <strong>DMX</strong> statements difficult to read and maintain.<br />

Rules for Delimited Identifiers<br />

Following are the rules for the format of delimited identifiers:<br />

1. Delimited identifiers can contain the same number of characters as regular identifiers<br />

(from 1 through 100 characters, not including the delimiter characters).<br />

2. The body of an identifier can contain any combination of characters that are used in<br />

the current code page, including the delimiting characters themselves. If the body of<br />

the identifier itself contains delimiting characters, special handling is required:<br />

• If the body of the identifier contains a left bracket ([), no additional handling is<br />

required.<br />

• If the body of the identifier contains a right bracket (]), you must specify two right<br />

brackets (]]) to represent it within the code page.<br />

Delimiting Identifiers with Multiple Parts<br />

When you use qualified object names, you may have to delimit more than one of the<br />

identifiers that make up the object name. You must delimit each identifier individually.<br />

See Also<br />

<strong>Data</strong> <strong>Mining</strong> <strong>Extensions</strong> (<strong>DMX</strong>) <strong>Reference</strong><br />

<strong>Data</strong> <strong>Mining</strong> <strong>Extensions</strong> (<strong>DMX</strong>) Syntax Elements<br />

<strong>DMX</strong> Function <strong>Reference</strong><br />

<strong>DMX</strong> Operator <strong>Reference</strong><br />

<strong>DMX</strong> Statement <strong>Reference</strong><br />

<strong>DMX</strong> Syntax Conventions<br />

Mapping Functions to Query Types (<strong>DMX</strong>)<br />

Prediction Queries (<strong>DMX</strong>)<br />

Understanding the Select Statement (<strong>DMX</strong>)<br />

<strong>Data</strong> Types<br />

When you use <strong>Data</strong> <strong>Mining</strong> <strong>Extensions</strong> (<strong>DMX</strong>) to define a new mining model in<br />

Microsoft SQL Server Analysis Services, you must provide a data type for each column in<br />

the model. The data type describes the data that the data mining algorithm will use<br />

when it builds the model.<br />

20

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!