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Performing a function on rows of data determined from transitive relationships between columns
Performing a function on rows of data determined from transitive relationships between columns
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机译:对根据列之间的传递关系确定的数据行执行功能
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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.
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