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Background documentation B* Trees for Table with LONG Columns Locate the document in its SAP Library structure

An example of B* trees for tables is a B* tree structure in which the table has primary data and data of data type LONG.

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The primary table contains a Structure linkLONG column. The numerical column defines the length of the LONG field for each line. There is one B* tree for the primary data, another for data of type short LONG and multiple B* trees for other data of type long LONG.

The primary table contains a fixed-length reference to the contents of the LONG field in each row. This reference points uniquely to the storage location of the content of the LONG field, either as a key to a B* tree (short LONG) or as the table ID of one of the multiple B* trees (long LONG).

 

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