Use of literals instead of variables or parameters is generally discouraged within SQL because it makes each statement unique, which drives down cache hit ratios.
一般情况下，不鼓励在SQL中使用字面值，而是主张使用变量或参数，因为字面值会使每个语句具有独特性，这会降低缓存的命中率。
Researches were carried out on the role of the financial statement in the stock choice by qualitative and quantitative methods from solvent ratios and hedging and proliferating ratios.
利用财务报表中的盈利性比率和保值增值率，结合定性和定量分析方法对财务报表进行了研究。
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