PERFORMING A FUNCTION ON ROWS OF DATA DETERMINED FROM TRANSITIVE RELATIONSHIPS BETWEEN COLUMNS

摘要

In an embodiment, a request is received that specifies a function and a specified key value. Rows from all tables that are accessible from the specified key value are transitively searched, wherein the transitively searching further comprises finding values in a plurality of pairs of columns, wherein found rows that are found by the transitively searching comprise values in a respective first column of the plurality of pairs of columns that satisfy a dependency relationship with values in a respective second column of the plurality of pairs of columns. The function is executed against only the found rows.

主权项

1. A computer-readable storage medium encoded with instructions, wherein the instructions when executed comprise:
receiving a request that specifies a function and a specified key value; transitively searching rows from all tables that are accessible from the specified key value, wherein the transitively searching further comprises finding values in a plurality of pairs of columns wherein found rows that are found by the transitively searching comprise values in a respective first column of the plurality of pairs of columns that satisfy a dependency relationship with values in a respective second column of the plurality of pairs of columns; and executing the function against only the found rows.