[英]php sql query for advanced search
我需要對高級搜索進行特定的查詢。
我提供了一個數據庫結構示例
id code content id_post -------- -------- ----------- ------------- 1 reg lazio 1 2 reg lazio 2 3 type typeX 1 4 type typeY 2
現在我必須在此表中進行一些搜索並獲取正確的id_post,例如:
我希望所有具有代碼= reg和content = typeY的id_post在這種情況下都沒有結果
2d示例->所有id_post的代碼= reg和content = lazio的結果必須為1和2
3d示例->所有id_post具有(code = reg and content = lazio)和(code = type and content = typeY)的結果必須為2
等等....
如何設置三個查詢?
嘗試這個:
范例1:
select id_post from your_table where code = 'reg' and content = 'typeY'
范例2:
select id_post from your_table where code = 'reg' and content = 'lazio'
范例3:
select t1.id_post from your_table as t1
inner join (select id_post from your_table where code = 'type' and content = 'typeY') as t2 on t1.id_post = t2.id_post
where t1.code = 'reg' and t1.content = 'lazio'
我已經運行測試以驗證結果。 您可以在此sqlfiddle上自己驗證它們
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