單項選擇題
A.SELECT*FROM sh_goods WHERE 0; B.SELECT*FROM sh_goods GROUP BY category_id WHERE price>5; C.SELECT*FROM sh_goods LIMIT 3 ORDER BY price; D.以上選項都不正確
A.price BETWEEN 599 AND 1299 B.price IN(599,1299) C.599<=price<=1299 D.以上答案都不正確
填空題
判斷題
A.~(按位取反) B.^ C.&& D.&
A.=(賦值運算符) B.=(比較運算符) C.-(負(fù)號) D.-(減法)
A.算術(shù)運算符 B.邏輯運算符 C.賦值運算符 D.位運算符