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22 lines
784 B
22 lines
784 B
2 years ago
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from sqlalchemy import select, func
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from s1_models import *
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# join
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columns = [orders.c.order_id, users.c.username, users.c.phone, cookies.c.cookie_name, line_items.c.quantity,
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line_items.c.extended_cost]
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cookiemon_orders = select(columns)
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cookiemon_orders = cookiemon_orders.select_from(orders.join(users).join(line_items).join(cookies)).where(
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users.c.username == 'cookiemon')
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result = connection.execute(cookiemon_orders).fetchall()
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for row in result:
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print(row)
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# outerjoin
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columns = [users.c.username, func.count(orders.c.order_id)]
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all_orders = select(columns)
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all_orders = all_orders.select_from(users.outerjoin(orders))
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all_orders = all_orders.group_by(users.c.username)
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result = connection.execute(all_orders).fetchall()
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for row in result:
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print(row)
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