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describe-pythonshu-ju-ku-cao-zuo-paramstyle-here.html
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<title>Describe python/数据库操作paramstyle here.</title>
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Describe python/数据库操作paramstyle here.
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<abbr class="published" title="2013-08-13T00:00:00">
<i class="icon-calendar"></i>二 13 八月 2013
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<p>用?还是%s取决于paramstyle参数的配置，dbapi2.0文档 http://www.python.org/dev/peps/pep-0249/ 里的解释
{{{
'qmark' Question mark style,
e.g. '...WHERE name=?'
'numeric' Numeric, positional style,
e.g. '...WHERE name=:1'
'named' Named style,
e.g. '...WHERE name=:name'
'format' ANSI C printf format codes,
e.g. '...WHERE name=%s'
'pyformat' Python extended format codes,
e.g. '...WHERE name=%(name)s'
}}}
也就是说如果 mysqldb 默认不是'qmark' 而是'format'风格的话 可以这样写</p>
<p>execute('insert into queuelog (a,b,c,d,e) values (%s,%s,%s,%s,%s)' ,Datalist)</p>
<p>'''重点是不要自己拼接sql语句'''。</p>
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<li>
<p>2、关于execute是单条插入的问题 dbapi2.0定义了 executemany，下面这个例子是mysqldb文档里的
{{{
c.executemany(
"""INSERT INTO breakfast (name, spam, eggs, sausage, price)
VALUES (%s, %s, %s, %s, %s)""",
[
("Spam and Sausage Lover's Plate", 5, 1, 8, 7.95 ),
("Not So Much Spam Plate", 3, 2, 0, 3.95 ),
("Don't Wany ANY SPAM! Plate", 0, 4, 3, 5.95 )
] )
}}}</p>
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