有SQL语句:SELECT*FROM教师WHERENOT(工资>3000OR工资<2000),与此语句等价的SQL语句是()。
A.SELECT*FROM教师WHERE工资BETWEEN2000AND3000
B.SELECT*FROM教师WHERE工资>2000AND工资<3000
C.SELECT*FROM教师WHERE工资>2000OR工资<3000
D.SELECT*FROM教师WHERE工资<=2000AND工资>=3000
A.SELECT*FROM教师WHERE工资BETWEEN2000AND3000
B.SELECT*FROM教师WHERE工资>2000AND工资<3000
C.SELECT*FROM教师WHERE工资>2000OR工资<3000
D.SELECT*FROM教师WHERE工资<=2000AND工资>=3000
有SQL语句:SELECT * FROM 教师 WHERE NOT(工资>3000 OR 工资<2000)与如下语句等价的SQL语句是A)SELECT*FROM 教师 WHERE 工资 BETWEEN 2000 AND 3000B) SELECT*FROM 教师 WHERE 工资>2000 AND 工资<3000C)SELECT*FROM 教师 WHERE 工资>2000 OR 工资<3000D) SELECT*FROM 教师 WHERE 工资<=2000 AND 工资>3000
A.SELECT * FROM 教师 WHERE 工资 BETWEEN 2000 AND 3000
B.SELECT * FROM 教师 WHERE 工资>2000 AND工资<3000
C.SELECT * FROM 教师 WHERE 工资>2000 OR工资<3000
D.SELECT * FROM 教师 WHERE 工资<=2000 AND工资>=3000
有SQL语句: SELECT DISTINCT 系号 FROM 教师 WHERE 工资>=; ALL(SELECT 工资 FROM 教师 WHERE 系号="02") 该语句的执行结果是系号A) "01"和"02" B)"01"和"03" C)"01"和"04" D)"02"和"03"
有SQL语句: SELECT DISTINCT 系号 FROM 教师 WHERE工资>=; ALL(SELECT 工资 FROM 教师 WHERE 系号="02") 该语句的执行结果是系号
A.01和"02"
B.01和"03"
C.01和"04"
D.02和"03"
A.SELECT*FROM 教师 WHERE 工资 BETWEEN 2000 AND 3000
B.SELECT*FROM 教师 WHERE 工资>2000 AND工资<3000
C.SELECT*FROM 教师 WHERE 工资>2000 OR工资<3000
D.SELECT*FROM 教师 WHERE 工资<=2000 AND工资>3000
有SQL语句:SELECT*FROM教师WHERENOT(工资>3000OR工资<2000),与该语句等价的SQL语句是()。
A.SELECT*FROM教师WHERE工资BETWEEN2000AND3000
B.SELECT*FROM教师WHERE工资>2000AND工资<3000
C.SELECT*FROM教师WHERE工资>2000OR工资<3000
D.SELECT*FROM教师WHERE工资<=2000AND工资>=3000
有SQL语句:SELECT DISTINCT 系号 FROM 教师 WHERE 工资>=;ALL(SELECT 工资 FROM 教师 WHERE 系号=“02”)与如上语句等价的SQL语句是A) SELECT DISTINCT 系号 FROM 教师 WHERE 工资>=;(SELECT MAX(工资)FROM教师WHERE系号="02")B)SELECT DISTINCT 系号 FROM 教师 WHERE 工资>=;(SELECT MIN(工资)FROM 教师 WHERE 系号="02")C)SELECT DISTINCT 系号 FROM 教师 WHERE 工资>=;ANY(SELECT 工资 FROM 教师 WHERE 系号="02")D)SELECT DISTINCT 系号 FROM 教师 WHERE 工资>=;SOME(SELECT 工资 FROM 教师 WHERE 系号="02")
有SQL语句: SELECT * FROM 教师 WHERE NOT (工资>3000 OR 工资<2000) 与如上语句等价的SQL语句是
A.SELECT*FROM 教师 WHERE 工资BETWEEN 2000 AND 3000
B.SELECT*FROM 教师 WHERE 工资>2000 AND 工资<3000
C.SELECT*FROM 教师 WHERE 工资>2000 OR 工资<3000
D.SELECT*FROM 教师 WHERE 工资<=2000 AND 工资>3000
有SQL语句:SELECT 主讲课程,COUNT(*)FROM 教师 GROUP BY 主讲课程该语句执行结果含有的记录个数是A)3 B)4 C)5 D)6
有SQL语句: SELECT DISTINCT系号FROM教师WHERE工资>=; ALL(SELECT工资FROM教师WHERE系号="02") 与如上语句等价的SQL语句是
A.SELECT DISTINCT系号FROM教师WHERE工资>=; (SELECT MAX(工资)FROM教师WHERE系号="02")
B.SELECT DISTINCT系号FROM教师WHERE工资>=; (SELECT MIN(工资)FROM教师WHERE系号="02")
C.SELECT DISTINCT系号FROM教师WHERE工资>=; ANY(SELECT工资FROM教师WHERE系号="02")
D.SELECT DISTINCT系号FROM教师WHERE工资>=; SOME(SELECT工资FROM教师WHERE系号="02")
A.SELECT*FROM教师WHERE工资BETWEEN2000AND3000
B.SELECT*FROM教师WHERE工资>2000AND工资<3000
C.SELECT*FROM教师WHERE工资>2000OR工资<3000
D.SELECT*FROM教师WHERE工资<=2000AND工资>=3000
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