SQL语句中,SELECT命令中的JOIN是用来建立表间的联系短语,连接条件应出现在下列( )短语中。
【答案】:B从SELECT标准语句的完整语法格式中抽出与连接运算相关的语法格式如下:
SELECT…
FROM<数据库表1>INNER JOIN<数据库表2>
0N<连接条件>
WHERE…
其中,INNER JOIN等价于JOIN,为普通的连接,在Visual FoxPro中称为内部连接;0N<连接条件>指定两个进行表连接的条件字段。
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