sql example (incomplete) - using nest to redirect instance to struct (something like defining the class of the instance)
sql example (incomplete) - using nest to redirect instance to struct (something like defining the class of the instance)
sql example enriched
sql example enriched
sql example enriched - xor clauses
sql example - added where clause
experiments with proxy_t and struct_t, replaced x-type attribute with x-tag, added x-proxy attribute, sql example changes
a new definition for struct using "attribute" and "proxy" as the basis of its construction, base_type is no more (we proxy varchar, varint and so forth to struct.attribute)