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SELECT * FROM table WHERE gender = M AND age >= '18' AND age <= '50';
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SELECT column1, column2, FROM table_name WHERE column_name1 = 'value1' AND column_name2 = 'value2';
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SELECT suppliers.suppler_name, orders.order_id
FROM suppliers, orders
WHERE suppliers.supplier_id = orders.supplier_id
AND suppliers.state = 'California';
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select (
case when (value1 = 1) then (value2)
when (value2 = 1) then (value1) end) as newColumnname
from tablename where value1 = 1 or value2 = 1