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2023-08-30 14:00:40 +02:00
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10_ABAP_SQL_Hierarchies.md
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@@ -59,7 +59,7 @@ learn some additional syntax and then you can start right away.
> **💡 Note**<br>
> The examples in this cheat sheet are only relevant for [standard ABAP](https://help.sap.com/doc/abapdocu_latest_index_htm/latest/en-US/index.htm?file=abenstandard_abap_glosry.htm), i. e. the unrestricted ABAP language scope. Find the artifacts used in the code snippets in your on-premise system.
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## SQL Hierarchies
@@ -103,7 +103,7 @@ for each row. For creating a SQL hierarchy, you need the following:
The following topics show you step-by-step how SQL hierarchies can be
created and accessed.
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## Creating SQL Hierarchies
@@ -258,7 +258,7 @@ From the ABAP language point of view, CDS hierarchies are the most
convenient way of using SQL hierarchies. Now let us turn to other ways,
involving more ABAP, until we do not use any CDS more in the end.
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### ABAP SQL Hierarchy Generator HIERARCHY
The ABAP SQL [hierarchy
@@ -375,7 +375,7 @@ not least we will use CTEs as hierarchies themselves. You might skip the
following section and turn directly to the hierarchy navigators if you
are not too interested in this syntactic gimmicks.
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### ABAP CTE Hierarchies
@@ -489,7 +489,7 @@ hierarchy association. Running
`CL_DEMO_SQL_HIERARCHIES` shows that all
assertions are fulfilled.
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## Hierarchy Navigators
@@ -513,7 +513,7 @@ or a CTE hierarchy. Check the examples of the
[documentation](https://help.sap.com/doc/abapdocu_cp_index_htm/CLOUD/en-US/index.htm?file=abenselect_hierarchy_navigators.htm),
where this is also shown.
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### Hierarchy Node Navigator HIERARCHY_DESCENDANTS
@@ -550,7 +550,7 @@ distance to the respective start node. A further parameter
`DISTANCE` - not shown here - allows you to restrict the
distance to the respective start node.
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### Hierarchy Node Navigator HIERARCHY_ANCESTORS
@@ -582,7 +582,7 @@ aggregate functions or evaluating the internal result table, you can now
easily extract further information like the number of ancestors and so
on.
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### Hierarchy Node Navigator HIERARCHY_SIBLINGS
@@ -616,7 +616,7 @@ the respective start node. Running
`CL_DEMO_SQL_HIERARCHIES`, where we start with
a node that definitely has some siblings, shows the result.
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### Hierarchy Aggregate Navigators
@@ -717,7 +717,7 @@ Running `CL_DEMO_SQL_HIERARCHIES` shows the
result. It also shows the result of the joined data source, where you
can check that the calculated values are correct.
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## More Information
For the complete reference documentation about SQL hierarchies, see [`SELECT, FROM hierarchy_data`](https://help.sap.com/doc/abapdocu_cp_index_htm/CLOUD/en-US/index.htm?file=abenselect_hierarchy_data.htm).