sql数据库查询语言的关键
时间: 2023-09-13 07:08:55 浏览: 52
SQL数据库查询语言的关键是查询语句。查询语句是用来从数据库中提取所需数据的命令。它包含了关键字、表名、查询字段和查询条件等组成部分。通过编写查询语句,我们可以指定要查询的表、要返回的字段和筛选条件,从而实现对数据库中数据的灵活查询和分析。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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