How to find if a table is mapped in a map?

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Sometimes we would like to know if a particular table is mapped in a map. To achieve this, SysDictTable::isTableMapped() method can be used. This method takes two parameters, the map name and the table which we want to check if it is mapped.


SysDictTable::isTableMapped(tablenum(AddressMap), tablenum(LedgerTable));
SysDictTable::isTableMapped(tablenum(AddressMap), tablenum(CustTable));


The first statement will return false since LedgerTable does not have a mapping in AddressMap map. The second statement will return true since the CustTable fields have a mapping in the AddressMap map.

Note how the tablenum() function can also be used to return the id of a map.

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