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ABENDDDDL_HIERARCHY - DDDDL HIERARCHY

ABENDDDDL_HIERARCHY - DDDDL HIERARCHY

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Hierarchy Columns

Hierarchy columns are additional components of the result set when the following data sources are accessed in an query:

The hierarchy columns have the same names and contain the values of the hierarchy attributes of the data sources above. Using these, they provide information about the SQL hierarchy node in question. The following table shows the name and meaning of each hierarchy column:

Notes

  • In addition to the general hierarchy columns shown here, the hierarchy navigators might also have several special columns.
  • The hierarchy columns must be specified explicitly in the SELECT list before they can be selected.
  • The values of some hierarchy columns are usable only if the hierarchy is a tree-like SQL hierarchy in which a hierarchy node does not have multiple parent nodes.

Example

Explicit access to the hierarchy columns when a CDS hierarchy is specified as a data source in a SELECT statement in the program DEMO_HIERARCHY_PARENT_CHILD.






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