38 lines
966 B
SQL
38 lines
966 B
SQL
create table t_stu(
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sid int PRIMARY KEY auto_increment,
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sname VARCHAR(20),
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sex VARCHAR(2),
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tel VARCHAR(13),
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class_id int ,
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age int ,
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sal decimal(10,2)
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);
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INSERT INTO t_stu(sname,sex,tel,class_id,age,sal) VALUES
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('张三','男','12345678901',10,20,1000.00),
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('李四','男','12345678902',10,22,5000.00),
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('王五','女','12345678903',20,23,3120.00),
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('赵柳','男','12345678904',20,23,1353.00),
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('王启','女','12345678905',30,21,15123.00),
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('王浩','男','12345678905',30,22,5123.00),
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('志伟','男','12345678905',30,20,7241.00);
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SELECT * FROM t_stu ORDER BY age desc;
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SELECT * FROM t_stu WHERE sname LIKE '王%';
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SELECT * FROM t_stu WHERE sal>5000 and sex='男';
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SELECT tel FROM t_stu WHERE class_id=20 and sex = '男';
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SELECT MIN(sal) FROM t_stu ;
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SELECT MIN(age) FROM t_stu WHERE class_id = 30;
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SELECT MIN(sal) FROM t_stu WHERE sex='女';
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SELECT * FROM t_stu WHERE sid = (SELECT sid FROM
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t_stu WHERE sex='女' ORDER BY sal asc LIMIT 1) |