lookup(one key column), given a key column, constructs the row source key, looks up the row source entry, and returns the double numeric value of resultColumn from the row source.
lookup(String rowsourceName, String keyColumn1, String resultColumn)
See lookup.
lookup(two key columns) looks up a row source with two key-columns for the value of resultColumn.
lookup(String rowsourceName, String keyColumn1, String keyColumn2, String resultColumn)
See lookup.
lookup(three key columns) looks up a row source with three key-columns for the value of resultColumn.
lookup(String rowsourceName, String keyColumn1, String keyColumn2, String keyColumn3, String resultColumn)
See lookup.