要将ORDER BY或LIMIT应用于单个SELECT,请将子句放在包围SELECT的括号内: (SELECT a FROM t1 WHERE a=10 AND B=1 ORDER BY a LIMIT 10)UNION(SELECT a FROM t2 WHERE a=11 AND B=2 ORDER BY a LIMIT 10);来源:...
我试图得到很长的x轴标签多线,如在包围的右图像: 我目前使用的代码: ax=cluster3.plot(x='Neighborhood',y=['Population'],kind='bar',alpha=0.75,title='Population of Each Neighborhood',figsize=(15,10)) ax....