2
我有一個entry
表列如下圖所示:如下圖所示最好的方式來獲得表MYSQL最相關的數據
id | ans_1 | ans_2 | ans_3 | ans_4 | ans_5 | date
表中的一些樣本數據:
1 | foo | bar | foobar | bar foo | foofoo | 2011/9/15**
2 | foo2 | bar2 | foobar2 | bar2 foo | foofoo2 | 2011/9/17**
3 | foo3 | bar3 | foobar3 | bar foo3 | foo3foo | 2011/9/20**
我希望從上述entry
表中搜索最相關的數據,由5個答案集提供。
我的解決方案#1:
SELECT * FROM entry
WHERE ans_1 LIKE '%$answer_set_1_en%'
AND ans_2 LIKE '%answer_set_2_en%'
AND ans_3 LIKE'%answer_set_3_en%'
AND ans_4 LIKE '%answer_set_4_en%'
AND ans_5 LIKE '%answer_set_5_en%';
不過,我有2套答案(DIFF語言集)現在來比較,這纔是我的解決方案#2:
SELECT * FROM entry
WHERE (ans_1 LIKE '%$answer_set_1_en%'
AND ans_2 LIKE '%answer_set_2_en%'
AND ans_3 LIKE '%answer_set_3_en%'
AND ans_4 LIKE '%answer_set_4_en%'
AND ans_5 LIKE '%answer_set_5_en%')
OR
(ans_1 LIKE '%$answer_set_1_jp%'
AND ans_2 LIKE '%answer_set_2_jp%'
AND ans_3 LIKE '%answer_set_3_jp%'
AND ans_4 LIKE '%answer_set_4_jp%'
AND ans_5 LIKE '%answer_set_5_jp%');
但是,條目可能與兩種語言混合,所以我的第三個嘗試:
SELECT * FROM entry
WHERE (
(ans_1 LIKE '%$answer_set_1_en%' OR ans_1 LIKE '%$answer_set_1_jp%')
AND (ans_2 LIKE '%answer_set_2_en%' OR ans_2 LIKE '%$answer_set_2_jp%')
AND (ans_3 LIKE '%answer_set_3_en%' OR ans_3 LIKE '%$answer_set_3_jp%')
AND (ans_4 LIKE '%answer_set_4_en%' OR ans_4 LIKE '%$answer_set_4_jp%')
AND (ans_5 LIKE '%answer_set_5_en%' OR ans_5 LIKE '%$answer_set_5_jp%'));
是第三查詢優化/效率已經足夠?我是否可以知道查詢最相關列的其他方法嗎?
感謝安德烈亞斯的快速反應,但我認爲這是我能得到的最好的。 – alenn