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无法返回部分匹配和完全匹配(trouble returning both partial and exact matches)

我有这样一张桌子:

product_id    attribute_id
2             7,8
1             2,7
3             7

我还有一个名为$search_ids的变量,它包含要搜索的值。

如果$search_ids的值为7 ,我希望它返回所有3行,但如果它的值为2,77,8 ,那么我只想返回该行。

我尝试了以下$search_ids的值为7,但这不会返回第二行! 如果我将行的值从2,7更改为7,2那么它也会返回该行!

那么现在以下查询:

$q = "SELECT product_id FROM product_attributes 
    WHERE attribute_id IN ('$search_ids')
    OR attribute_id IN ($search_ids) 

回报

2
3

代替

2
1
3

I have a table like this:

product_id    attribute_id
2             7,8
1             2,7
3             7

I also have a variable called $search_ids which contains values to search for.

If $search_ids has a value of 7 , I want it to return all 3 rows, but if it has a value of 2,7 or 7,8 I then want to return that row only.

I tried the following where $search_ids has a value of 7, but this doesn't return the second row! And if I change the row's value from 2,7 to 7,2 then it returns that row also!

So right now the following query:

$q = "SELECT product_id FROM product_attributes 
    WHERE attribute_id IN ('$search_ids')
    OR attribute_id IN ($search_ids) 

returns

2
3

instead of

2
1
3

原文:https://stackoverflow.com/questions/22428277
更新时间:2023-02-28 08:02

最满意答案

在您的代码中执行此操作:

public void musicPlay(View view) {
    Button music = (Button) findViewById(R.id.music);
        if(isPlaying) {
            music.setPressed(true);
            MusicManager.release()
        }else{
            music.setPressed(false);
            MusicManager.start(this);
        }
    isPlaying = !isPlaying;
}

也在你的xml中:

<?xml version="1.0" encoding="utf-8"?>
    <selector xmlns:android="http://schemas.android.com/apk/res/android">
        <item android:drawable="@drawable/no_music" android:state_selected="true"/>
        <item android:drawable="@drawable/no_music" android:state_pressed="true"/>
        <item android:drawable="@drawable/music"/>
    </selector>

Do this in your code:

public void musicPlay(View view) {
    Button music = (Button) findViewById(R.id.music);
        if(isPlaying) {
            music.setPressed(true);
            MusicManager.release()
        }else{
            music.setPressed(false);
            MusicManager.start(this);
        }
    isPlaying = !isPlaying;
}

Also in your xml:

<?xml version="1.0" encoding="utf-8"?>
    <selector xmlns:android="http://schemas.android.com/apk/res/android">
        <item android:drawable="@drawable/no_music" android:state_selected="true"/>
        <item android:drawable="@drawable/no_music" android:state_pressed="true"/>
        <item android:drawable="@drawable/music"/>
    </selector>

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