mysql精粹:group by 中很好的函数
<br /><br />1 GROUP_CONCAT<br />mysql> SELECT student_name,<br /> -> GROUP_CONCAT(test_score)<br /> -> FROM student<br /> -> GROUP BY student_name;<br />Or: <br />mysql> SELECT student_name,<br /> -> GROUP_CONCAT(DISTINCT test
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2010-08-12 14:57:00 ·
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