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-- прСдставлСниС ΠΏΠΎΠΊΠ°Π·Ρ‹Π²Π°Π΅Ρ‚ Π½Π°Π»ΠΈΡ‡ΠΈΠ΅ Ρ‚ΠΎΠ²Π°Ρ€ΠΎΠ² ΠΏΠΎ Ρ€Π°Π·Π΄Π΅Π»Ρƒ ΠΊΠ°Ρ‚Π°Π»ΠΎΠ³Π° CREATE OR REPLACE VIEW view_products_in_catalog as SELECT c.catalog_id, p.name, st.quantity as count_prod, c.name as name_catalog FROM products p join catalog_subdivision cs join catalogs c join storehouse st on p.catalog_sub_id = cs.catalog_subdivision_id and cs.catalog_id = c.catalog_id and p.id = st.product_id -- посмотрим наимСнования ΠΈ количСство Ρ‚ΠΎΠ²Π°Ρ€ΠΎΠ² Π² ΠΊΠ°Ρ‚Π°Π»ΠΎΠ³Π΅ ОдСТда SELECT * FROM view_products_in_catalog where catalog_id = 2 -- прСдставлСниС Π²Ρ‹Π²ΠΎΠ΄ΠΈΡ‚ статистику ΠΏΠΎΠΊΡƒΠΏΠΎΠΊ ΠΏΠΎ ΠΏΠΎΠ»ΡŒΠ·ΠΎΠ²Π°Ρ‚Π΅Π»ΡΠΌ ΠΈ сортируСт ΠΏΠΎ количСству Π·Π°ΠΊΠ°Π·ΠΎΠ² CREATE or REPLACE VIEW view_user_activ as SELECT CONCAT(u.firstname, ' ', u.lastname) as us, COUNT(o.order_id) as cnt FROM users u join orders o on u.id = o.user_id GROUP by us ORDER by cnt desc -- посмотрим статистику ΠΏΠΎΠΊΡƒΠΏΠΎΠΊ select * FROM view_user_activ -- ΠΏΡ€ΠΈΠΌΠ΅Ρ€ Π²Π»ΠΎΠΆΠ΅Π½Π½ΠΎΠ³ΠΎ запроса, Π²Ρ‹Π²ΠΎΠ΄ΠΈΡ‚ ΠΏΠΎΠ»ΡŒΠ·ΠΎΠ²Π°Ρ‚Π΅Π»Ρ Π΅Π³ΠΎ ΠΏΠΎΠ» ΠΈ количСство ΠΎΡ‚Π·Ρ‹Π²ΠΎΠ² SELECT id, lastname, (SELECT gender from profiles where user_id = users.id) as gend, (SELECT count(*) from feedback where user_id = id) as cnt FROM users order by cnt desc

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