MySQL數據庫查詢練習（子查詢分步教程）

注：數據庫表格附錄在文末 – 1、與張三同鄉的男生姓名 step1:SELECT snativeplace FROM student WHERE sname=‘張三’ step2:SELECT sname FROM student WHERE ssex=‘男’ AND snativeplace=(step1) AND sname != ‘張三’ SELECT sname FROM student

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