abstract class %Storage.SQL extends %Library.StorageThe %Storage.SQL class contains a set of storage interface methods that use embedded SQL statements, as well as an advanced set of data mapping definition, to provide a way to layer objects on top of pre-existing InterSystems IRIS data structures.
The storage interface methods, which are implemented as method generators, work in conjunction with the persistent interface methods of the %Persistent class to provide persistent behavior for objects.
If pIgnoreIndexList is defined, it should be a $listbuild of index names that should not be purged. This argument allows you to purge all indices except those defined in pIgnoreIndexList. The default value of this argument is "", which means all indices, or all indices specified in pIndexList, will be purged.
Returns a %Status value indicating success or failure. This method is normally generated by the storage class for persistent classes using %Storage.Persistent or %Storage.SQL. Persistent classes using some other storage class, such as %Library.CustomStorage must override this method.