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MDEV-33407 Parser support for vector indexes The syntax is create table t1 (... vector index (v) ...); limitation: * v is a binary string and NOT NULL * only one vector index per table * temporary tables are not supported MDEV-33404 Engine-independent indexes: subtable method added support for so-called "high level indexes", they are not visible to the storage engine, implemented on the sql level. For every such an index in a table, say, t1, the server implicitly creates a second table named, like, t1#i#05 (where "05" is the index number in t1). This table has a fixed structure, no frm, not accessible directly, doesn't go into the table cache, needs no MDLs. MDEV-33406 basic optimizer support for k-NN searches for a query like SELECT ... ORDER BY func() optimizer will use item_func->part_of_sortkey() to decide what keys can be used to resolve ORDER BY. |
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