Although in SAP HANA 1.0, Rev 70, the most complete developer tooling is only available for Windows and Linux, it is possible to install HANA in a Virtual Machine on a Mac. In my case, I decided to go with a Linux virtual machine, one running Ubuntu. I first tried VirtualBox but I had some issues. Can i make a use case diagram with visual studio for mac. The SAP HANA studio is a collection of applications for SAP HANA database. It is a Client Tool. Mac OS; Hana studio Installation steps in Windows Environment Follow below steps: Double click on the highlighted software. Assign the path where we need to keep the installation log.
SAP HANA: Table Functions
Table Functions are now the recommendedscript-based artefact whenever a modelling requirement cannot be fulfilled withgraphical information views.
In previousversions of SAP HANA, it was possible to create scripted calculation views,which are similar in their key principles but provide less flexibility andperformance. In particular, Table User Defined Functions allow an improvedmovement of filters from client tools down to the source data.
You create design-time Table Functions with the SAPHANA Developer perspective.
It is alsopossible to convert existing Scripted CalculationViews into Table Functions, with a migration tool available in SAP HANAStudio since SAP HANA SPS11.
Table functions can return only asingle result set.
Tablefunctions are read-only functions. This meansthat you cannot use insert, update, delete, commit,or exec SQL statement inside a table function. If you have any of theseSQL statements in a table function, it will notactivate.
•are side-effect free read-only functions that use standard SQL
•can be used as source data in Graphical Calculation Views
•consume data from tables, models, functions, predictive algorithms, etc.
EXAMPLES:
To start, as always, make sureyou are in the Development Perspective.
Step 1:From the Developer Perspective, choose Repositories tab.
Step 2: Select the package whereyou want to create a Table Function, Right-click thepackage selects New and choose Other.
Step 3: This brings up the new window andselect Table Function and click Next.
Step 4: Now provide a name to this table function. Here I named itas a TBL_FN_DEMO click anywhere outside thebox .hdbtablefunction will automaticallyappended to the name and Click Finish.
Step 5: This opens up a table function with some default codealready present and makes up the skeleton of the overall code which is alwaysneeded.
Firstly, let’s clean up thecomments placed by the system. Remove them by deleting the text between BEGIN and END block.
Step 6: Let’s understand these rows one by one. The FUNCTION keyword marks the beginning of a SAP HANA function.
This keyword is followed by theauto-generated complete name of the table function which is a combination ofthe
KABIL_PRACTICE= Package Name
The set of open and closedbrackets “( )” at the end is used to add anyInput parameters to this table function. Fornow, we will leave it blank inside.
The next line starts with a RETURNS keyword. The return_table_typeis just a placeholder for the actual code. This is similar to thecolumns folder in the Scripted view whereyou specify the list of output fields for the Scripted node.
We need to remove this return_table_type and provide the structure anddatatype of the output we expect from this table function.
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As seen below, we add the keywordTABLE to specify that the output of thisfunction is a table and it will have 4 fields
Below the BEGIN Keyword we have to write RETURNKeyword. This tells HANA that the select statement you write below this would be theoutput of this table function.
Step 7: Now, we are required to write the selectstatement which provides output in the samestructure and order as the RETURNS TABLE statement.
Now, write your logic below the RETURN statement as shown as below:
CODE:
FUNCTION'USER2'.'KABIL_PRACTICE::TBL_FN_DEMO' ( )
'Order_ID'Decimal(8,1),
'Order_Quantity'Decimal(5,1),
)
SQLSECURITYINVOKERAS
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RETURN
select'Order_ID',
'Order_Quantity',
from'KABIL_PRACTICE'.'SUPERSTORE_SALES';
END;
Step 8: Finally validate and activate the Table Function.
you can now notice that an activetable function is now available in yourpackage.
Step 9: To check the data consistency of this table function,select Modeler Perspective, from the SQL Console run a below query:
select * from'USER2'.'KABIL_PRACTICE::TBL_FN_DEMO' ( ) ;
Result:
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A Join clause combines records from two or more tables /view in a database.
SAP HANA supports following types of join. Download camfrog pro untuk pcgs.
SAP HANA supports following types of join. Download camfrog pro untuk pcgs.
- Inner Join
- Left Outer Join
- Right Outer Join
- Full Outer Join
- Referential Join
- Text Join
- The INNER JOIN selects the set of records that match in both the Tables.
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Inner join should be used if referential integrity is ensured.
Inner Join is much faster that Outer Join thus is the preferred solution if possible from semantically perspective
Attribute View : Inner Joins can be used to join different master data tables to a joint dimension What is included with omnisphere 2.
Inner Join is much faster that Outer Join thus is the preferred solution if possible from semantically perspective
Attribute View : Inner Joins can be used to join different master data tables to a joint dimension What is included with omnisphere 2.
Download iskysoft itube studio for mac. Analytical Views: Inner Joins can be used if referential integrity cannot be ensured
- The Left Outer Join selects the complete set of records from first table (CUSTOMER), with the matching records (where available) in second table (SALES_ORDER). If there is no match, the right side will contain null.
- The Right Outer Join selects the complete set of records from second table (SALES_ORDER), with the matching records (where available) in first table (CUSTOMER). If there is no match, the left side will contain null.
- The FULL OUTER JOIN keyword selects all rows from the left table (table1) and from the right table (table2).
The FULL OUTER JOIN keyword combines the result of both LEFT OUTER and RIGHT OUTER joins.
- Referential Join is semantically an inner join that assume that referential integrity is given.
Note: Referential integrity is the property of database which ensures that each foreign key value in a table exists as a primary key in the referenced table.
Referential join is performance wise better than inner join, but only be used when you are sure that referential integrity is maintained.
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- Text Join is used in order to get language-specific data.
You have a product table that contains product IDs without descriptions and you have a text table for products that contains language-specific descriptions for each product. You can create a text join between the two tables to get the language-specific details. In a text join, the right table should be the text table and it is mandatory to specify the Language Column.