摘要:        
习题地址:http://sqlzoo.net/1.htm表结构:bbc(name, region, area, population, gdp)2a.Show the name for the countries that have a population of at least 200 million. (200 million is 200000000, there are eight zeros)select name from bbc where population >= 2000000002b.Give the name and the per capitaGDPfor t    阅读全文
        
            posted @ 2012-06-01 16:45
Leo Forest
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浙公网安备 33010602011771号