从数据库的STATES表中查询州名称、简称以及人口等信息。要求查询首字母为T的州,以及人口最多的州。
解答:
A | |
1 |
![]() =demo.query("select NAME,ABBR,POPULATION from STATES where left(NAME,1)='T'")
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2 |
![]() =demo.query("select NAME,ABBR,POPULATION from STATES where left(NAME,1)=?","T")
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3 |
![]() =demo.query("select NAME,ABBR,POPULATION from STATES where POPULATION = (select max(POPULATION) from STATES)")
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4 |
![]() =demo.query("select NAME,ABBR,POPULATION from STATES")
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5 |
![]() =A4.select(left(NAME,1)=="T")
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6 |
![]() =A4.maxp(POPULATION)
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A1、A2和A5中查询结果相同,如下:
A3和A6中查询结果相同,如下: