Sqlite 事务,语法错误。在同一事务中插入和删除

发布于 2024-09-26 13:11:45 字数 1214 浏览 0 评论 0原文

我有一个要插入数据库的项目列表,但我不想要任何重复项。所以我删除所有项目并重新插入所有项目。这不是最有效的方法,但它的项目不多,所以它对我有用。但我在“插入”附近遇到语法错误。我执行以下操作:

DELETE FROM Settings WHERE Type = 'Extensions'
INSERT INTO Settings (Value, Type) Values ('img', 'Extensions')
INSERT INTO Settings (Value, Type) Values ('avi', 'Extensions')
INSERT INTO Settings (Value, Type) Values ('mpg', 'Extensions')
INSERT INTO Settings (Value, Type) Values ('mkv', 'Extensions')
INSERT INTO Settings (Value, Type) Values ('mov', 'Extensions')
INSERT INTO Settings (Value, Type) Values ('iso', 'Extensions')

并用以下命令执行它:

protected bool ExecuteCommand(string command, bool rollbackOnError)
{
    using (SQLiteTransaction transaction = DbConnection.BeginTransaction())
    {
        try
        {

            using (SQLiteCommand mycommand = new SQLiteCommand(DbConnection))
            {
                mycommand.CommandText = command;
                mycommand.ExecuteNonQuery();
                transaction.Commit();
            }
        }
        catch
        {
            if (rollbackOnError)
            {
                transaction.Rollback();
            }
            return false;
        }
    }
    return true;
}

I have a list of items that I want to insert into the database but I do not want any duplicates. So I delete all the items and reinsert all. It's not the most efficient way but it's not many items so it works for me. But I get syntax error near "Insert". I do the following:

DELETE FROM Settings WHERE Type = 'Extensions'
INSERT INTO Settings (Value, Type) Values ('img', 'Extensions')
INSERT INTO Settings (Value, Type) Values ('avi', 'Extensions')
INSERT INTO Settings (Value, Type) Values ('mpg', 'Extensions')
INSERT INTO Settings (Value, Type) Values ('mkv', 'Extensions')
INSERT INTO Settings (Value, Type) Values ('mov', 'Extensions')
INSERT INTO Settings (Value, Type) Values ('iso', 'Extensions')

And execute it with this:

protected bool ExecuteCommand(string command, bool rollbackOnError)
{
    using (SQLiteTransaction transaction = DbConnection.BeginTransaction())
    {
        try
        {

            using (SQLiteCommand mycommand = new SQLiteCommand(DbConnection))
            {
                mycommand.CommandText = command;
                mycommand.ExecuteNonQuery();
                transaction.Commit();
            }
        }
        catch
        {
            if (rollbackOnError)
            {
                transaction.Rollback();
            }
            return false;
        }
    }
    return true;
}

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爱情眠于流年 2024-10-03 13:11:45

您需要用分号分隔命令,不是吗?

我也不确定该命令是否能够运行多个语句。

You need to separate your commands with a semicolon, don't you?

Also I am not sure if the command is able to run multiple statements.

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