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Caution: The OData infrastructure cannot check whether your specified keys are unique. So be careful when choosing keys. Generated Local Key For objects that do not have a unique key in their results, for example, calculation views or aggregated tables, you can generate a locally valid key. This key value numbers the results starting with 1 and is not meant for dereferencing the entity; you cannot use this key to retrieve the entity. The key is valid only for the duration of the current session and is used only to satisfy OData's need for a unique ID in the results. The property type of a generated local key is Edm.String and cannot be changed. Service definition sample.odata:generatedkeys.xsodata http://localhost:8002/sample/odata/generatedkeys.xsodata/$metadata 194 P U B L I C © 2012 SAP AG. All rights reserved. SAP HANA Developer Guide Defining Web-based Data Access
As a consequence of the transient nature of generated local keys, it is not possible to define navigation properties on these entities or use them in filter or order by conditions. OData Associations You can define associations between entities to express relationships between entities. With associations it is possible to reflect foreign key constraints on database tables, hierarchies and other relations between database objects. OSDL supports simple associations, where the information about the relationship is stored in one of the participating entities, and complex associations, where the relationship information is stored in a separate association table. Associations themselves are freestanding. On top of them you can specify which of the entities participating in the relationship can navigate over the association to the other entity by creating NavigationPropertys. For the examples used to illustrate OData associations, we use the tables customer and order: Table definition: sample.odata:customer.hdbtable table.schemaName = "ODATASAMPLES"; table.tableType = COLUMNSTORE; table.columns = [ {name = "ID"; sqlType = INTEGER; nullable = false;}, {name = "RecruitID"; sqlType = VARCHAR; nullable = true;} ]; table.primaryKey.pkcolumns = ["ID"]; Table definition: sample.odata:order.hdbtable table.schemaName = "ODATASAMPLES"; table.tableType = COLUMNSTORE; table.columns = [ {name = "ID"; sqlType = INTEGER; nullable = false;}, {name = "CustomerID"; sqlType = INTEGER; nullable = false;} ]; table.primaryKey.pkcolumns = ["ID"]; There is one relationship order.CustomerID to customer.ID and one relationship customer.RecruitID to customer.ID. SAP HANA Developer Guide Defining Web-based Data Access P U B L I C © 2012 SAP AG. All rights reserved. 195
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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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Page 165 and 166: The main aim of OData is to define
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Page 169 and 170: Entity Sets This construct allows y
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Page 193: OData Key Specification The OData s
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Column ID Key Description Data Type
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a) Delete the existing full text in
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Parameter Data Type FUZZY_SEAR CH_I
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Parameter Data Type Default (TEXT)
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The CONTAINS predicate is optional
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Limitations The SNIPPET function ha
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Fuzzy search can be used in various
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Original Letter Standardized Letter
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Option similarCalculationMode The o
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Supported Data Types Fuzzy search w
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option2=value2')) ORDER BY score DE
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Name of Option Short Name maxDateDi
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TEXT and SHORTTEXT TEXT and SHORTTE
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2. Perform the search on two column
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Rule 2 - House Numbers or House Num
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col1 NVARCHAR(20) FUZZY SEARCH MODE
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2. Country codes are standardized t
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Postcode 1 Postcode 2 Score Remarks
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WHERE CONTAINS(postcode, '1234', FU
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PHRASE is similar to AND but restri
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Tokens=input')) ORDER BY score DESC
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)) ORDER BY score DESC, id; SCORE I
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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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