MySQL基礎查詢子句 where /order by/通配符過濾 like/正則表達式過濾 regexp

##第4章 檢索數據 #檢索單個列、多個列、全部列 select prod_name from products; select prod_id,prod_name,prod_price from products; select * from products;git #檢索不一樣的行（惟一行） select vend_id from products; select distinct vend

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