Difference between revisions of "DBRELATION()"
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==Purpose== | ==Purpose== | ||
Function to return table-linking expression | Function to return table-linking expression | ||
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==Products== | ==Products== | ||
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[[Category:Documentation]] | [[Category:Documentation]] | ||
[[Category:Functions]] | [[Category:Functions]] | ||
Revision as of 16:40, 27 November 2009
Purpose
Function to return table-linking expression
Syntax
DBRELATION(<expN>)
See Also
CREATE BRIDGE, CREATE VIEW, DB_MAXWKA, DBRSELECT(), RELATION(), SET RELATION, SET VIEW, TARGET(), USE
Description
The DBRELATION() function is synonymous with the RELATION() function. The DBRELATION() function returns the linking expression of a specified relation in the current workarea. The <expN> specifies the position of the desired linking expression from the list of previously defined relations. By default, the Recital environment supports 20 workareas but this can be increased, by setting the environment symbol DB_MAXWKA to a higher value, which allows for up to (DB_MAXWKA-1) relationships. The DBRELATION() function always returns a character string in lower case. If there is no linking expression defined for the <expN> selected a null string will be returned.
Example
use shows in 2 index pcode use patrons in 1 set relation to patron_code into shows ? dbrelation(1) patron_code ? target(1) 2
Products
Recital Server, Recital
