SAP NEWS-791-ABAP SQL

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AB_SQL in ABAP Release 7.91
ITOC

ABAP_MODIFICATION_NN New Cardinality Syntax for Joins

A new syntax for specifying the cardinality of joins is available: ${MANY $| ONE $| ${EXACT ONE$}$} TO ${MANY $| ONE $| ${EXACT ONE$}$}
This syntax allows specifying a source and a target cardinality . The new cardinality syntax can be used to improve query performance. It can also be used in SQL path expressions and CTE associations.