select mod(21,5) from dual; 查询结果为 4; ( )
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1.select mod(21,5) from dual; 查询结果为 4; ( )
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2.SELECT 1 AS id, 'John' AS first_name, NULL AS commission FROM DUAL
UNION
SELECT 1, 'John' ,NULL FROM
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3.在Oracle中,执行下面的语句,返回值是()
select count(1),count(x),sum(x) from (select null x from dual union all select
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4.执行select top 10 * from 客房入住表 where 退房时间<=GETDATE(),查询结果为()。( )
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5.mod(-5,3)结果为()
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6.SELECT *FROM examineeORDER BY eeid limit ((SELECT count(*) FROM examinee)-5) offset 2该语句的功能是查询( )。
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7.执行以下语句SELECT INITCAP(“hello world”);查询结果()
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8.mod(-5,3)结果为( )A.1B.-1C.2D.-2
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9.mod(-5,3)结果为()1-12-2
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10.select current_timestamp() from dual.SQL语句的执行结果为2019-08-02 17:17:46.640711.