Difference between revisions of "LOOKUP()"
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==Purpose== | ==Purpose== | ||
Function to perform a cross-table lookup | Function to perform a cross-table lookup | ||
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==Products== | ==Products== | ||
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[[Category:Documentation]] | [[Category:Documentation]] | ||
[[Category:Functions]] | [[Category:Functions]] | ||
Latest revision as of 17:08, 2 December 2009
Purpose
Function to perform a cross-table lookup
Syntax
LOOKUP(<exp>, <key expression>, <workarea | alias>)
See Also
CREATE, MODIFY STRUCTURE, RLOOKUP(), SEEK(), SET RELATION
Description
The LOOKUP() function looks up the specified index <key expression> in the master index of specified <workarea | alias>. The LOOKUP() function then evaluates the expression <exp>, and returns the value of the <exp> if the <key expression> is found. The LOOKUP() function returns a null string if the <key expression> is not found. The lookup function can be very useful for dealing with calculated expressions in either the Application Data Dictionary or the Forms Designer.
Example
use depts in 2 index dnum use funcs in 1 index funcno ? lookup(depts->dname,funcs->dnum,depts) Research and Development
Products
Recital Server, Recital
