Elkartzeko propietateak
Kontsulta-diseinuan estekatutako bi eremuren arteko lotura-marran klik bikoitza egiten baduzu, edo Txertatu – Erlazio berria aukeratzen baduzu, Elkartzeko propietateak elkarrizketa-koadroa agertuko da. Propietate horiek aurrerantzean sortutako kontsulta guztietan erabiliko dira.
Hartzen diren taulak
Elkartu nahi dituzun bi taulak zehazten ditu.
Hartzen diren eremuak
Erlazio baten bidez elkartuko diren bi datu-eremu zehazten ditu.
Aukerak
Mota
Specifies the join type of the selected join. Some databases support only a subset of the various possible types.
Barnekoa
In an inner join, the results table contains only those records for which the content of the linked fields is the same. In LibreOfficeDev SQL this type of link is created by a corresponding WHERE clause.
Ezkerrekoa
In a left join, the results table contains all records of the queried fields from the left table and only those records of the queried fields from the right table for which the content of the linked fields is the same. In LibreOfficeDev SQL this type of link corresponds to the LEFT OUTER JOIN command.
Eskuinekoa
In a right join, the results table contains all records of the queried fields from the right table and only those records of the queried fields from the left table for which the content of the linked fields is the same. In LibreOfficeDev SQL this type of link corresponds to the RIGHT OUTER JOIN command.
Osoa
In a full join, the results table contains all records of the queried fields from the left and right tables. In the SQL of LibreOfficeDev this type of link corresponds to the FULL OUTER JOIN command.
Naturala
In a natural join, the keyword NATURAL in inserted into the SQL statement that defines the relation. The relation joins all columns that have the same column name in both tables. The resulting joined table contains only one column for each pair of equally named columns.