Add indexes to tables through extension
Dynamics 365 for Finance and Operations is now being licensed as Dynamics 365 Finance and Dynamics 365 Supply Chain Management. For more information about these licensing changes, see Dynamics 365 Licensing Update.
Often, you extend tables so that you can store additional data for later but also quickly access the data that is based on the new fields. Therefore, it's often beneficial to have a dedicated index that speeds up the database search. You can add a new index to an existing table through extension. To add an index to an existing table, you extend the selected table and then create an index just as you would create an index on a new table. You can add both new and existing fields so that they are part of the new index.
In the following illustration, an InventTable extension is used to define an index for a new field on the InventTable table.
You should not use this approach to create unique indexes. This change is an intrusive change that might break the solutions of other independent software vendors (ISVs) if those solutions are deployed in the same environment. This capability will be removed in future platform releases.
Extend standard indexes
You can extend standard indexes and add additional (included) columns but there are some conditions:
- The index is non-clustered.
- The index is not unique.
The following constraints apply to extending a standard index:
- You cannot delete existing columns.
- You cannot change the order of the existing columns.
- You cannot disable standard indexes.
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