QlikView Reference Manual.pdf - QlikCommunity - QlikView

27.6 Semantic Links
Normally selections are made explicitly by clicking on the field values that are interesting. There is, however,
also a way to make selections indirectly through semantic links. These are similar to field values, but
with the difference that they describe the relations between the objects rather than the objects themselves.
They appear as a list of buttons.
When clicking on a semantic link, a selection is made in an other field.
Rules for Semantic Tables
Semantic links are created by loading tables containing the relations between the objects.
l The table must contain exactly three or four columns.
l A semantic table must either contain relations between field values of different fields or between field
values of the same field. A mixture between the two is not accepted.
l The load or select statement loading a semantic table must be preceded by a semantic qualifier to
show that it is not a logical table.
Normally four columns are used, the first one containing the field values that have a relation to some other
field value and the third one containing the related field value. The second column must contain the names
of the relations, and finally, the fourth one must contain the names of the inverse relations.
If three columns are used, no explicit names for the inverse relations can be given. The names given in the
second column are used both for the relation and the inverse relation. The names are then preceded or followed
by arrows.
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