Представления в базе данных MySQL
Например, удобно сделать для поиска по нескольким таблицам. CREATE OR REPLACE VIEW tbl_view_search AS SELECT CONCAT(‘post_’, id) AS id, id AS source_id, text, CONCAT(‘/’, url) AS url, title, logo AS img, NULL AS price FROM posts UNION SELECT CONCAT(‘product_’, id) AS id, id AS source_id, text, CONCAT(‘/path/to/’, url) AS url, title, img, price FROM products; … Читать далее