执行 C# SQL 数据插入时出现语法错误

【问题标题】：Syntax error while doing C# SQL data insert执行 C# SQL 数据插入时出现语法错误
【发布时间】：2022-03-02 01:50:29
【问题描述】： 
string query = $"insert into MessageData values(NULL,'{rehberIsmi}','{jsonData}','{DateTime.Now}')";

using (SQLiteConnection conn = new SQLiteConnection(DatabaseInformation.ConnectionString))
{
    try
    {
        conn.Open();

        SQLiteCommand com = new SQLiteCommand(query, conn);
        com.ExecuteNonQuery();

        conn.Close();
    }
    catch (Exception ex)
    {
       MessageBox.Show("Bir hata meydana geldi : " + ex.Message, "Hata", 
       MessageBoxButtons.OK, MessageBoxIcon.Error);
    }
}

我正在使用上面的代码将数据输入 SQLite 数据库，但是在获取一些字符串值时，我收到了这个错误：

'da'附近的SQL逻辑错误：语法错误'

是什么原因？

Wrong json value : "[
{"avatar":"","position":"right","time":"2021.02.12 12:43:54","mediaSize":"0 Byte","mediaName":"","mediaTime":"0\"","localPath":"","thumbPath":"","delete":"false","type":"text","identifier":"+905416379800","msg":"Merhabalar Sizlere nasıl yardımcı olabilirim."},
{"avatar":"","position":"left","time":"2021.02.12 12:43:55","mediaSize":"0 Byte","mediaName":"","mediaTime":"0\"","localPath":"","thumbPath":"","delete":"false","type":"text","identifier":"","msg":"Merhaba"},{"avatar":"","position":"left","time":"2021.02.12 12:44:03","mediaSize":"0 Byte","mediaName":"","mediaTime":"0\"","localPath":"","thumbPath":"","delete":"false","type":"text","identifier":"","msg":"Senet ile satışınız varmı"},{"avatar":"","position":"left","time":"2021.02.12 12:44:16","mediaSize":"0 Byte","mediaName":"","mediaTime":"0\"","localPath":"","thumbPath":"","delete":"false","type":"text","identifier":"","msg":"Kanunu mati 125 için"},{"avatar":"","position":"left","time":"2021.02.12 12:44:20","mediaSize":"0 Byte","mediaName":"","mediaTime":"0\"","localPath":"","thumbPath":"","delete":"false","type":"text","identifier":"","msg":"Bilgi almak istiyorum"},{"avatar":"","position":"left","time":"2021.02.12 12:44:29","mediaSize":"0 Byte","mediaName":"","mediaTime":"0\"","localPath":"","thumbPath":"","delete":"false","type":"text","identifier":"","msg":"10 bin peşin versek diğerini"},{"avatar":"","position":"left","time":"2021.02.12 12:44:37","mediaSize":"0 Byte","mediaName":"","mediaTime":"0\"","localPath":"","thumbPath":"","delete":"false","type":"text","identifier":"","msg":"12 aya bölsek nasıl olur"},{"avatar":"","position":"right","time":"2021.02.12 13:39:26","mediaSize":"0 Byte","mediaName":"","mediaTime":"0\"","localPath":"","thumbPath":"","delete":"false","type":"text","identifier":"+905416379800","msg":"https://www.ekuralkan.com/mati-42313 peşin fiyatı 22.353 TL dir. Tüm modellerimizi minimum %25 peşinat ile 36 aya varan taksitler ile alabilirsiniz. https://www.ekuralkan.com/senetli-satis-basvuru\nhttps://blog.ekuralkan.com/\nhttps://www.youtube.com/channel/UCKRIe5B_60bNIR6uSkhxR1g"},{"avatar":"","position":"right","time":"2021.02.12 13:39:36","mediaSize":"0 Byte","mediaName":"","mediaTime":"0\"","localPath":"","thumbPath":"","delete":"false","type":"text","identifier":"+905416379800","msg":"Sitemiz de vade oranlarını inceleyebilirsiniz"},{"avatar":"","position":"left","time":"2021.12.12 23:52:20","mediaSize":"0 Byte","mediaName":"","mediaTime":"0\"","localPath":"","thumbPath":"","delete":"false","type":"text","identifier":"","msg":"Bağlantı:\nhttps://www.instagram.com/p/CXTcf_-jRQM/\n\nBunu Instagram'da gördüm..."},{"avatar":"","position":"right","time":"2021.12.12 23:52:20","mediaSize":"0 Byte","mediaName":"","mediaTime":"0\"","localPath":"","thumbPath":"","delete":"false","type":"text","identifier":"","msg":"Mesajınız için teşekkür ederiz. Mesai saatlerimiz hafta içi 07:00 & 17:00’dir. Mesai saatleri içinde en kısa sürede size cevap vereceğiz."},{"avatar":"","position":"right","time":"1971.01.01 00:00:00","mediaSize":"0 Byte","mediaName":"","mediaTime":"0\"","localPath":"","thumbPath":"","delete":"false","type":"text","identifier":"","msg":"https://www.ekuralkan.com/mati-42313 peşin fiyatı 22.353 TL dir. Tüm modellerimizi minimum %25 peşinat ile 36 aya varan taksitler ile alabilirsiniz. https://www.ekuralkan.com/senetli-satis-basvuru\nhttps://blog.ekuralkan.com/\nhttps://www.youtube.com/channel/UCKRIe5B_60bNIR6uSkhxR1g"},{"avatar":"","position":"left","time":"1971.01.01 00:00:00","mediaSize":"0 Byte","mediaName":"","mediaTime":"0\"","localPath":"","thumbPath":"","delete":"false","type":"text","identifier":"","msg":"Kolay gelsin"},{"avatar":"","position":"left","time":"1971.01.01 00:00:00","mediaSize":"0 Byte","mediaName":"","mediaTime":"0\"","localPath":"","thumbPath":"","delete":"false","type":"text","identifier":"","msg":"Senentle satış varmı ?"},{"avatar":"","position":"right","time":"1971.01.01 00:00:00","mediaSize":"0 Byte","mediaName":"","mediaTime":"0\"","localPath":"","thumbPath":"","delete":"false","type":"text","identifier":"","msg":"Findeks üyeliğiniz varsa senetli alım başvurunuzu yapabiliriz"},{"avatar":"","position":"left","time":"1971.01.01 00:00:00","mediaSize":"0 Byte","mediaName":"","mediaTime":"0\"","localPath":"","thumbPath":"","delete":"false","type":"text","identifier":"","msg":"Nasıl oluyor o"},{"avatar":"","position":"right","time":"1971.01.01 00:00:00","mediaSize":"0 Byte","mediaName":"","mediaTime":"0\"","localPath":"","thumbPath":"","delete":"false","type":"text","identifier":"","msg":"kredi notudur"},{"avatar":"","position":"right","time":"1971.01.01 00:00:00","mediaSize":"0 Byte","mediaName":"","mediaTime":"0\"","localPath":"","thumbPath":"","delete":"false","type":"text","identifier":"","msg":"internetten kendiniz üye olmanız gerekiyor"},{"avatar":"","position":"left","time":"1971.01.01 00:00:00","mediaSize":"0 Byte","mediaName":"","mediaTime":"0\"","localPath":"","thumbPath":"","delete":"false","type":"text","identifier":"","msg":"Onu biliyorum"},{"avatar":"","position":"left","time":"1971.01.01 00:00:00","mediaSize":"0 Byte","mediaName":"","mediaTime":"0\"","localPath":"","thumbPath":"","delete":"false","type":"text","identifier":"","msg":"Findex üyeliğimiz var zaten de"},{"avatar":"","position":"left","time":"1971.01.01 00:00:00","mediaSize":"0 Byte","mediaName":"","mediaTime":"0\"","localPath":"","thumbPath":"","delete":"false","type":"text","identifier":"","msg":"Başvuruyu nasıl yapıyoruz"},{"avatar":"","position":"right","time":"1971.01.01 00:00:00","mediaSize":"37.65 KB","mediaName":"attachment_743","mediaTime":"0\"","localPath":"media\\attachment_743","thumbPath":"media\\attachment_743","delete":"false","type":"photo","identifier":"","msg":"IMG-20211213-WA0001.jpg"},{"avatar":"","position":"right","time":"1971.01.01 00:00:00","mediaSize":"0 Byte","mediaName":"","mediaTime":"0\"","localPath":"","thumbPath":"","delete":"false","type":"text","identifier":"","msg":"başvurunuzu buradan yapabiliriz siteden kendiniz de yapabilirsiniz"},{"avatar":"","position":"left","time":"1971.01.01 00:00:00","mediaSize":"0 Byte","mediaName":"","mediaTime":"0\"","localPath":"","thumbPath":"","delete":"false","type":"text","identifier":"","msg":"Link alabilirmiyim"},{"avatar":"","position":"left","time":"1971.01.01 00:00:00","mediaSize":"0 Byte","mediaName":"","mediaTime":"0\"","localPath":"","thumbPath":"","delete":"false","type":"text","identifier":"","msg":"Bi türlü bulamadım"},{"avatar":"","position":"right","time":"1971.01.01 00:00:00","mediaSize":"0 Byte","mediaName":"","mediaTime":"0\"","localPath":"","thumbPath":"","delete":"false","type":"text","identifier":"","msg":"https://isube.findeks.com/ers/uyelik/bireyselUyelik.xhtml"},{"avatar":"","position":"left","time":"1971.01.01 00:00:00","mediaSize":"0 Byte","mediaName":"","mediaTime":"0\"","localPath":"","thumbPath":"","delete":"false","type":"text","identifier":"","msg":"Üyeliğim var zaten"},{"avatar":"","position":"right","time":"1971.01.01 00:00:00","mediaSize":"0 Byte","mediaName":"","mediaTime":"0\"","localPath":"","thumbPath":"","delete":"false","type":"text","identifier":"","msg":"https://www.ekuralkan.com/senetli-satis-basvuru"},{"avatar":"","position":"right","time":"1971.01.01 00:00:00","mediaSize":"0 Byte","mediaName":"","mediaTime":"0\"","localPath":"","thumbPath":"","delete":"false","type":"text","identifier":"","msg":"sistemden senetli alım başvurunuzu yapabilirsiniz"},{"avatar":"","position":"left","time":"1971.01.01 00:00:00","mediaSize":"0 Byte","mediaName":"","mediaTime":"0\"","localPath":"","thumbPath":"","delete":"false","type":"text","identifier":"","msg":"Başvuru yaptım"},{"avatar":"","position":"left","time":"1971.01.01 00:00:00","mediaSize":"0 Byte","mediaName":"","mediaTime":"0\"","localPath":"","thumbPath":"","delete":"false","type":"text","identifier":"","msg":"Size ulaştımı başvuru"},{"avatar":"","position":"right","time":"1971.01.01 00:00:00","mediaSize":"0 Byte","mediaName":"","mediaTime":"0\"","localPath":"","thumbPath":"","delete":"false","type":"text","identifier":"","msg":"onaylandı mı süreciniz"},{"avatar":"","position":"left","time":"1971.01.01 00:00:00","mediaSize":"0 Byte","mediaName":"","mediaTime":"0\"","localPath":"","thumbPath":"","delete":"false","type":"text","identifier":"","msg":"Başvuru beklemede"},{"avatar":"","position":"left","time":"1971.01.01 00:00:00","mediaSize":"0 Byte","mediaName":"","mediaTime":"0\"","localPath":"","thumbPath":"","delete":"false","type":"text","identifier":"","msg":"Yazdım"},{"avatar":"","position":"left","time":"1971.01.01 00:00:00","mediaSize":"0 Byte","mediaName":"","mediaTime":"0\"","localPath":"","thumbPath":"","delete":"false","type":"text","identifier":"","msg":"Yazdı anlamadım bende"},{"avatar":"","position":"right","time":"1971.01.01 00:00:00","mediaSize":"0 Byte","mediaName":"","mediaTime":"0\"","localPath":"","thumbPath":"","delete":"false","type":"text","identifier":"","msg":"red olarak sonuçlanmıştır"},{"avatar":"","position":"right","time":"1971.01.01 00:00:00","mediaSize":"0 Byte","mediaName":"","mediaTime":"0\"","localPath":"","thumbPath":"","delete":"false","type":"text","identifier":"","msg":"ekran çıkmadı ise onaylanmamıştır"},{"avatar":"","position":"left","time":"1971.01.01 00:00:00","mediaSize":"0 Byte","mediaName":"","mediaTime":"0\"","localPath":"","thumbPath":"","delete":"false","type":"text","identifier":"","msg":"Anladım"}]"

【问题讨论】：

  • 这正是您不进行字符串连接来创建sql命令的原因。您的输入很可能包含单引号，并且它搞砸了命令语法。使用参数化语句。 bobby-tables.com
  • 请提供rehberIsmi、jsonData 的值以及您当前的日期时间文化来证明这一点。
  • 如果您使用command parameters in SQLite，错误可能会消失。并在使用参数时去掉SQL命令中的引号。
  • 通过添加准备好的字符串值更新您的问题。

标签： c# sql sqlite


【解决方案1】：

如果 rehberIsmi, jsonData 之一包含单引号，则会出现 SQL 语法错误。

在您的情况下，通过连接字符串来编写 SQL 查询并不是一个好主意。 请使用参数

command.CommandText = @"insert into MessageData values(NULL,$rehberIsmi,$jsonData,$datetime)";
command.Parameters.AddWithValue("$rehberIsmi", rehberIsmi);
command.Parameters.AddWithValue("$jsonData", jsonData);
command.Parameters.AddWithValue("$datetime", DateTime.Now);

在此处查看详细信息 https://docs.microsoft.com/en-us/dotnet/standard/data/sqlite/parameters

【讨论】：

  • 这是错误的。 @parameters 不能用引号引起来！ insert into MessageData values(NULL, $rehberIsmi, $jsonData, $datetime)。参数不会作为字符串插入，而是作为单独的数据传递给数据库服务器。
  • 您应该查看Can we stop using AddWithValue() already? 并停止使用.AddWithValue() - 它可能会导致意想不到和令人惊讶的结果...
  • @OlivierJacot-Descombes 感谢您指出错误。我更新了。
  • 这个答案完全解决了这个问题。谢谢
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