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When you create a TEXT or SHORTTEXT column in a table, SAP HANA automatically creates a corresponding full text index. However, for columns of other data types, you must manually create and define any necessary full text indexes. Altering Full Text Index Parameters [page 246] You can alter a full text index after it is created. Altering an index includes changing the values of the parameters and altering the parameters by replacing the index. Synchronization [page 240] Full text indexes in a SAP HANA database must be created and updated in synchronization with the corresponding columns. This synchronization can be either synchronous or asynchronous. Full Text Index Parameters [page 247] The content and behavior of a full text index is configured by the use of both default and user-specified parameters. To view the configuration of a full text index, you use the SYS.FULLTEXT_INDEXES view. 11.1.2 Synchronization Full text indexes in a SAP HANA database must be created and updated in synchronization with the corresponding columns. This synchronization can be either synchronous or asynchronous. Synchronous In SAP HANA, indexes of the type TEXT and SHORTTEXT(n) are synchronous. Text preprocessing is automatically performed when a column is created or new text is inserted and the full text index is then automatically updated. The system cannot transport any data to the proper database tables until text preprocessing is complete. Asynchronous If you manually create a full text index, you can specify whether the index is synchronous or asynchronous. By default, manually created indexes are asynchronous. Text preprocessing is not initially performed when the table or column is created or whenever new text is inserted. In this case, inserting the results of the text preprocessing and writing the original data do not occur at the same time. Therefore, the full text information may not be immediately available for searching. To handle asynchronous processing of text, SAP HANA uses queues. Queues The queue is a mechanism used to enable a full text index to operate asynchronously. This means that when you insert new entries into the column, the text is not made available in the column until it is preprocessed. When you insert new entries, the queue sends the text to the preprocessor for analysis. It returns a serialized instance of a DAF (document analysis format) object, which is then processed further by the HANA column store. The result is stored in the full text index. The SAP HANA queue manager automatically creates a queue when you create an asynchronous full text index or when the index server is started and the queue manager finds the information that a specific queue is needed. The queues are always created on the server on which the table is stored. Every entry in the queue has one of the following processing states: ● New 240 P U B L I C © 2012 SAP AG. All rights reserved. SAP HANA Developer Guide Enabling Search
● Preprocessing ● Preprocessed ● Indexing ● Error If the original column entry is modified or deleted during text processing, the queue is notified and, if necessary, the entry is preprocessed again. Note: The content of the queue is not made persistent at any stage. If the HANA index server process fails, the queue data is lost and the queue manager automatically restarts the process for those entries that were not already processed. Any incomplete text preprocessing is restarted from the beginning. Flush Scheduling When you create an asynchronous full text index, you can specify when documents are removed from the queue after they are preprocessed and inserted into the full text index; this is called flushing. You can schedule flushing based on either time or the number of documents. To do this, when you create the full text index, define one of the following clauses with the ASYNC parameter: ● FLUSH EVERY (n) MINUTES ● FLUSH AFTER (n) DOCUMENTS ● FLUSH EVERY (n) MINUTES OR AFTER (m) DOCUMENTS Note: You cannot specify negatives values for minutes or documents. To determine when the queue of an existing full text index is flushed, see the FLUSH_EVERY_MINUTES and FLUSH_AFTER_ROWS attributes in the view FULLTEXT_INDEXES. Related Links Manipulating Queue Processing [page 241] By default, queues are active initially and run automatically based on the parameters you specify when creating the full text index. However, if necessary, you can manually manipulate the processing of an existing queue. Manipulating Queue Processing By default, queues are active initially and run automatically based on the parameters you specify when creating the full text index. However, if necessary, you can manually manipulate the processing of an existing queue. To manipulate the processing of a queue, the following commands are available: ● FLUSH Updates the full text index with the documents in the queue which have already been processed and removes them from the queue. ● SUSPEND Suspends the full text index processing queue ● ACTIVATE SAP HANA Developer Guide Enabling Search P U B L I C © 2012 SAP AG. All rights reserved. 241
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SAP HANA Appliance Software SPS 05
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4.3.1 SAP HANA Repository Packages
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6.5.12 Searching Tables, Models and
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12.2 Authentication Overview. .....
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2 SAP HANA SAP HANA is an in-memory
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With a scanning speed of several gi
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SAP HANA greatly extends the tradit
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2.4 Refactoring SAP HANA Based Appl
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In either case, as a developer you
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For this scenario, you may need to
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Object Description File Extension M
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Committing the file saves it in the
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● Security: Contains the roles an
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The view essentially is a list of r
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Action Description ● Creates a ne
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● Debug Session: The debug sessio
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○ MODELING ○ CONTENT_ADMIN 3.5.
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4.1 Setting up Delivery Units A del
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Related Links ○ In the text boxes
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4.2.2 Creating a Repository Workspa
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3. Open the Project Explorer view.
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1. Create a package Packages are ne
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● Non-Structural Package contains
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In the New Package dialog, enter in
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Maintaining Translation Details [pa
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Note: Exposed package content can i
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Application-Access File Keyword Opt
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Note: You can disable authenticatio
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| |---2011... |---subpackage1 | |--
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You use the mime_mapping keyword to
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1. If you have not already done so,
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2. Select Open Development. The def
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3. Select Next. 4. Enter a user nam
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In the SAP HANA Repositories view,
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Since you only have one workspace,
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6. Add a file called .xsaccess (no
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SAP HANA Developer Guide Setting Up
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5.1 Schema Relational databases con
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creation, but can have any number o
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If you want to define a transportab
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ool public(default=true); optional
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5.9.1 Table-Import Model The table-
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○ The key area of the input value
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{name = "Forename"; sqlType = VARCH
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var pstatement1 = conn.prepareState
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Note: The following example is for
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You can perform the following tasks
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Requirement Preference Substeps Not
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a) Log on to the Central Management
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4. In the Target System section, se
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Remember: Schema mapping only appli
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) Select the required granularity c
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● Hierarchies Note: In the Semant
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Restriction: It is not allowed to a
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Related Links ● When you open an
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○ Select the Data Foundation node
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a) In the Output panel of the Logic
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Related Links Note: If an active ve
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Note: Definer's right: If you want
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Optional Step: Creating Calculated
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4. Choose OK. Activate Note: 1. If
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a. To map the source to the target
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a. Enter a name and description. b.
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example, to calculate Discount for
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○ Name Path - the unique node ID
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specifying target currency and dese
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● In the Activate dialog, you can
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Note: You can also create a join be
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● You can choose to create parame
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● A decision table is based on in
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Objects in edit mode in other works
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shown. You can apply a filter for p
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Type Description Calculation View G
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3. From the context menu, choose Da
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Function Syntax Purpose hextoraw st
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Function Syntax Purpose daysbetween
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6.5.13 Setting Keyboard Shortcuts Y
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case, the name of calculation view
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The generated information models an
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● CALL: Calls a procedure. For ex
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7.2 Debugging SQLScript The SAP HAN
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Invoker's right: If you want the sy
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The main aim of OData is to define
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The OData specification requires an
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Entity Sets This construct allows y
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● Sample JSON Output: Single Prop
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$count This request allows you to r
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● Sample ATOM and JSON Output: SA
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● Sample JSON Output: $orderby Th
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● Sample JSON Output: $top This o
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.xsodata//$inlinecount=allpages ●
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8.1.4 OData Security Considerations
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object :=['entity'] ( repoobject |
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SAP HANA SQL Type OData EDM Type Se
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Page 221 and 222: Use the $.import function, as follo
Page 223 and 224: Note: A SQL connection configuratio
Page 225 and 226: 8. Find the trace matching your app
Page 227 and 228: The session ID is the value of the
Page 229 and 230: 10 Building UIs with SAPUI5 This se
Page 231 and 232: 2. Specify the name, for example My
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Page 235 and 236: 11 Enabling Search With a SAP HANA
Page 237 and 238: Synchronization [page 240] Full tex
Page 239: ) content SHORTTEXT(100) Changes to
Page 243 and 244: Name of Option Description In most
Page 245 and 246: Column ID Key Description Data Type
Page 247 and 248: a) Delete the existing full text in
Page 249 and 250: Parameter Data Type FUZZY_SEAR CH_I
Page 251 and 252: Parameter Data Type Default (TEXT)
Page 253 and 254: The CONTAINS predicate is optional
Page 255 and 256: Limitations The SNIPPET function ha
Page 257 and 258: Fuzzy search can be used in various
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Page 265 and 266: option2=value2')) ORDER BY score DE
Page 267 and 268: Name of Option Short Name maxDateDi
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Page 271 and 272: 2. Perform the search on two column
Page 273 and 274: Rule 2 - House Numbers or House Num
Page 275 and 276: col1 NVARCHAR(20) FUZZY SEARCH MODE
Page 277 and 278: 2. Country codes are standardized t
Page 279 and 280: Postcode 1 Postcode 2 Score Remarks
Page 281 and 282: WHERE CONTAINS(postcode, '1234', FU
Page 283 and 284: PHRASE is similar to AND but restri
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Page 289 and 290: Option textSearch The textSearch op
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Fuzzy Search with Stopwords Usage S
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Stopword Example CREATE COLUMN TABL
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Stopword ltd The stopwords will not
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Column Name Type Primary Key Descri
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Only one of these errors is allowed
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2000-01-11 -> 0.96 2000-01-12 -> 0.
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This deletes the node and all its c
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Hofmann -- specifies the input valu
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SCORE ID COMPANYNAME 0.88 6 xabc 0.
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advanced customizing and layout of
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Example: http://hana1.acme.corp:800
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Along with the full text index, you
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11.3.7 Defining the Page Layout Now
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switchbox Parameter Name Default Va
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11.3.9 Defining the Layout of Resul
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12.2 Authentication Overview Authen
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Secondly, roles created as design-t
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Caution: Theoretically, a user with
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Example: role :: { catalog schema "
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12.4 Privileges SAP HANA offers var
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Authorization to update or delete n
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● Activity ● Validity ● Attri
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The SAP HANA modeler automatically
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Runtime Authorization Check of Anal
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Implications of Creating Analytic P
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Now when a database user requests a
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If you create restrictions on colum
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12.4.6 Granting Privileges to Users
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The location of the application-des
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For example, you need to plan, mana
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13.4 Importing Delivery Units Impor
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4. Download translated text to the
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14 Using Database Client Interfaces
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1. In a command line, run the follo
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The port should be 315, for example
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The first column shows the field na
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3. In the Connection tab of the Dat
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SAP HANA supports the following Mic
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Function Description Avg Returns th
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Function Description MembersAscenda
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○ MEMBERS_AND_ASCENDANTS ○ MEMB
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15 SAP HANA Developer References Th
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