全文主体分为以下部分：问题提出、演进梳理、理论研究、探索途径、实践解析。
The author construct the thesis by these parts:Statement the question, History carding, Theory analyze, Explore methods, Case research.
良好实践是参数化查询，从而仅解析或准备查询一次，然后再缓存并重用它。
The good practice is to parameterize a query, which allows the query to be parsed or prepared only once, cached, and reused. So a better way to write the query is to use a named parameter
例如，删除空格并采用严格的XHTML编码实践，提高下载和解析速度。
For instance, remove white space and adopt strict XHTML coding practices for faster downloads and parsing. To enforce XHTML strict, add the following doctype statement to your document.
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