asp，，``asp，，``AS 关键字为查询结果中的表或列指定别名。，，``sql，SELECT column_name AS alias_name FROM table_name;，``JOIN 子句来联合查询两个表。，，``sql，SELECT a.column1, b.column2，FROM table1 a，JOIN table2 b ON a.common_column = b.common_column;，`，，这个查询将返回 table1 和 table2 中匹配的行，common_column` 是两个表中共有的列。SELECT * FROM Table1 INNER JOIN Table2 ON Table1.id = Table2.foreign_id;JOIN 子句来查询两个表的数据。，，``sql，SELECT a.column1, b.column2，FROM table1 a，JOIN table2 b ON a.common_column = b.common_column;，``，，这段 SQL 语句将返回两个表中匹配的记录。Powered By Z-BlogPHP 1.7.3
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