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$query = mysql_query("SELECT * FROM chapter LEFT JOIN page ON chapter.chapterID=page.chapterID WHERE page.category AND chapter.category LIKE 'Novice' GROUP BY page.pageID,page.chapterID ")or die('Query failed');
我有以下查询,但我也想添加以下WHERE chapter.lectureID=1
我怎么可以这样做。我想这:
$query = mysql_query("SELECT * FROM chapter LEFT JOIN page ON chapter.chapterID=page.chapterID WHERE chapter.lectureID=1,page.category AND chapter.category LIKE 'Novice' GROUP BY page.pageID,page.chapterID ")or die('Query failed');
但是查询失败。
你应该尝试输出'mysql_error()',它应该告诉你类似“你的语法错误在chapter.lectureID = 1,page.category和chapter.category'附近”。 – Alexander