A Join clause combines records from two or more tables /view in a database.
SAP HANA supports following types of join.
SAP HANA supports following types of join.
- Inner Join
- Left Outer Join
- Right Outer Join
- Full Outer Join
- Referential Join
- Text Join
- Starting SAP HANA Studio and creating the system connection. 3: Installing SAP HANA Studio on the Desktop. To install on a MAC you need to download and install the MAC OS Version of the HANA Studio. After unpacking the files to a location on your MAC you should navigate to the relevant directory and run the hdbinst.
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- The INNER JOIN selects the set of records that match in both the Tables.
For those interested, I added a tutorial video to the SAP HANA Academy, part of the playlist on SAP HANA SPS 08 – installations SAP HANA Academy – SAP HANA installation: 5. Studio on Mac OS X – YouTube. SAP HANA studio is both, the central development environment and the main administration tool for HANA system. Additional features are − It is a client tool, which can be used to access local or remote HANA system. Leverage SAP HANA tables, SAP HANA Dynamic Tiering (Warm-Store), Hadoop or SAP Sybase IQ in SAP HANA native use cases with a tool based approach to model aging rules on tables to displace ‘aged’ data to.
Where to use :
Why visual studio for mac taking long to finish install. 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
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
Visual studio xml tools. Analytical Views: Inner Joins can be used if referential integrity cannot be ensured Itube studio review.
- 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.
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- 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.