無法在SQL Server 2008 R2上執行（DELETE）查詢

Question

我想刪除數據庫中包含.jpg擴展名所在URL的所有行！

我使用

try{ 
java.sql.Statement mystat=connection.createStatement(); 
String delete_jpg="DELETE FROM mytable WHERE mycol LIKE '%.jpg%' "; 
mystat.executeUpdate(delete_jpg); 
}catch(Exception e){ 
    } 

執行使用Java JDBC此查詢給出了完全沒有錯誤，但它不刪除行的！請有人告訴我，我做錯了，請！

示例網址是：

images/affiliation-logo4.png HTTP/1.1 
images/661.jpg HTTP/1.1 
footerslider/images/blue-left-arrow.png HTTP/1.1 
footerslider/images/blue-right-arrow.png HTTP/1.1 
media/contentHeader/32.jpg HTTP/1.1  //I want to delete this type of rows 
index.php?option=com_content&task=view&id=543 HTTP/1.1 
images/favic.ico HTTP/1.1 
src/ HTTP/1.0 
uiit/faculty.php?dept_id=31 HTTP/1.1 
uims/faculty.php?dept_id=32 HTTP/1.1 
media/profile/dhS1t8X.jpg HTTP/1.1  //I want to delete this type of rows 
media/profile/SSbkpgG.jpg HTTP/1.1  //I want to delete this type of rows 

Answer 1

從您的樣本網址我看到的模式是：

media/profile/dhS1t8X.jpg HTTP/1.1  //I want to delete this type of rows 

事情是你正在做的，但模式s應該是這樣的：

try{ 
java.sql.Statement mystat=connection.createStatement(); 
String delete_jpg="DELETE FROM mytable WHERE mycol LIKE '%.jpg %' "; //HERE YOU HAVE TO ADD A WHITE SPACE AFTER THE .jpg as you can also seen in your sample URL! 
mystat.executeUpdate(delete_jpg); 
}catch(Exception e){ 
} 

這樣做，一定會幫助你！

Answer 2

你可以試試這個修改您的語句：

String delete_jpg="DELETE FROM mytable WHERE mycol LIKE '%' + .jpg + '%' ";