Mysql 返回重复行的Sql查询

请查找以下查询：

SELECT a.reco_index_content_code,a.reco_index_content_name, a.reco_index_user_action_download_file, 
        CASE WHEN b.refdata_profession_passion_code LIKE '%-%'
                 THEN 'passion'
                 ELSE 'profession' 
             END AS passion_or_profession
FROM tbl_reco_index_contents a 
INNER JOIN tbl_reference_databases b
ON a.reco_index_content_code = b.refdata_content_code
WHERE a.reco_index_user_action_installed = 1 and a.user_profile_number =  1

查询返回某些重复的行。如果这个问题不是不言自明的，我将不得不回复进一步的细节

非常感谢您的帮助

查询结果

AAY_AAYAB_FTD00028  PGA TOUR            /mnt/sdcard/googleCheckout/PGA TOUR.apk profession
AAB_AABAE_FTD00071  PD Central          /mnt/sdcard/googleCheckout/Parkinson's Central.apk   passion
AAB_AABAE_FTD00071  PD Central          /mnt/sdcard/googleCheckout/Parkinson's Central.apk  passion
AAB_AABAE_FTD00072  com.diablo.psychiatry   /mnt/sdcard/googleCheckout/Psychiatry-Neurology Pro.apk passion
AAB_AABAE_FTD00072  com.diablo.psychiatry   /mnt/sdcard/googleCheckout/Psychiatry-Neurology Pro.apk passion
AAB_AABAA_FTD00074  Glasgow                 /mnt/sdcard/googleCheckout/Glasgow Coma Scale Free.apk  passion
AAB_AABAA_FTD00073  FOUR Score          /mnt/sdcard/googleCheckout/FOUR score.apk   passion
AAB_AABAA_FTD00075  Qx Calculate             /mnt/sdcard/googleCheckout/Calculate by QxMD.apk   passion

---

根据您显示的结果，简单的

DISTINCT

将删除重复项，因为两行中列中的所有值都相同

SELECT DISTINCT .....

---

您能显示查询结果吗？使用结果修改了我的问题如果联接表中有多行匹配的

refdata\u content\u code

，则会发生这种情况。谢谢，它成功了。我会接受更多的测试后的答案。再次感谢。