即时尝试从循环中的文本文件中插入大量项目。该循环显然是它的一个while循环发送文本文件的每一行sendtodb命令。使用本地数据库非常快(190万个插入大约需要4个小时),但是在远程MySQL服务器上执行此操作时,它需要几秒钟或几周的时间来托管每秒1个插图!有什么想法吗?远程mysql嵌入表循环非常慢
private void sendtodb(string image, string title, string content, int cat)
{
string cs = @"the connection string";
MySqlConnection conn = null;
conn = new MySqlConnection(cs);
conn.Open();
try
{
MySqlCommand cmd = new MySqlCommand("", conn);
cmd.CommandText = "INSERT INTO wp_posts (post_author, post_date, post_date_gmt, post_content, post_title, post_excerpt,post_status,comment_status,ping_status,post_password,post_name,to_ping,pinged,post_modified,post_modified_gmt,post_content_filtered,post_parent, guid,menu_order,post_type,post_mime_type,comment_count) "
+ "VALUES (@post_author, @post_date, @post_date_gmt, @post_content, @post_title, @post_excerpt,@post_status,@comment_status,@ping_status,@post_password,@post_name,@to_ping,@pinged,@post_modified,@post_modified_gmt,@post_content_filtered,@post_parent, @guid, @menu_order, @post_type, @post_mime_type, @comment_count)";
// cmd.Parameters.Add("?ID", MySqlDbType.VarChar).Value = "1";
cmd.Parameters.Add("@post_author", MySqlDbType.Int32).Value = 1;
cmd.Parameters.Add("@post_date", MySqlDbType.DateTime).Value = DateTime.Now;
cmd.Parameters.Add("@post_date_gmt", MySqlDbType.DateTime).Value = DateTime.Now;
cmd.Parameters.Add("@post_content", MySqlDbType.Text).Value = content;
cmd.Parameters.Add("@post_title", MySqlDbType.Text).Value = title;
cmd.Parameters.Add("@post_excerpt", MySqlDbType.VarChar).Value = "";
cmd.Parameters.Add("@post_status", MySqlDbType.VarChar).Value = "publish";
cmd.Parameters.Add("@comment_status", MySqlDbType.VarChar).Value = "open";
cmd.Parameters.Add("@ping_status", MySqlDbType.VarChar).Value = "open";
cmd.Parameters.Add("@post_password", MySqlDbType.VarChar).Value = "";
cmd.Parameters.Add("@post_name", MySqlDbType.VarChar).Value = "";
cmd.Parameters.Add("@to_ping", MySqlDbType.Text).Value = "";
cmd.Parameters.Add("@pinged", MySqlDbType.Text).Value = "";
cmd.Parameters.Add("@post_modified", MySqlDbType.DateTime).Value = DateTime.Now;
cmd.Parameters.Add("@post_modified_gmt", MySqlDbType.DateTime).Value = DateTime.Now;
cmd.Parameters.Add("@post_content_filtered", MySqlDbType.LongText).Value = "";
cmd.Parameters.Add("@post_parent", MySqlDbType.Int32).Value = 0;
cmd.Parameters.Add("@guid", MySqlDbType.VarChar).Value = "";
cmd.Parameters.Add("@menu_order", MySqlDbType.Int32).Value = 0;
cmd.Parameters.Add("@post_type", MySqlDbType.VarChar).Value = "post";
cmd.Parameters.Add("@post_mime_type", MySqlDbType.VarChar).Value = "";
cmd.Parameters.Add("@comment_count", MySqlDbType.Int32).Value = 0;
cmd.ExecuteNonQuery();
cmd.CommandText = "select * from wp_posts order by ID desc LIMIT 1";
MySqlDataReader dataReader = cmd.ExecuteReader();
int idcolumn = 0;
while (dataReader.Read())
{
idcolumn = Convert.ToInt32(dataReader["ID"]);
}
dataReader.Close();
cmd.CommandText = "INSERT INTO wp_postmeta (post_id,meta_key,meta_value)" + "VALUES (@post_id,@meta_key,@meta_value)";
cmd.Parameters.Add("@post_id", MySqlDbType.Int32).Value = idcolumn;
cmd.Parameters.Add("@meta_key", MySqlDbType.VarChar).Value = "Image";
cmd.Parameters.Add("@meta_value", MySqlDbType.LongText).Value = image;
cmd.ExecuteNonQuery();
cmd.CommandText = "INSERT INTO wp_term_relationships (object_id,term_taxonomy_id,term_order)" + "VALUES (@object_id,@term_taxonomy_id,@term_order)";
cmd.Parameters.Add("@object_id", MySqlDbType.Int32).Value = idcolumn;
cmd.Parameters.Add("@term_taxonomy_id", MySqlDbType.Int32).Value = cat;
cmd.Parameters.Add("@term_order", MySqlDbType.Int32).Value = 0;
cmd.ExecuteNonQuery();
textBox4.Text = idcolumn.ToString();
textBox2.Text = "MySQL version : " + conn.ServerVersion;
}
catch (MySqlException ex)
{
textBox2.Text = ex.ToString();
}
finally
{
if (conn != null)
{
conn.Close();
}
}
}
这是一个巨大的WordPress数据库
删除了'PHP'标签。这与此无关。 – CodeAngry
插入是从本地执行到远程还是本地远程?另外考虑使用'TRANSACTIONS'。可能有帮助。更何况,希望你不要连接每一个推动...我真的希望你不要和代码是错误的。 – CodeAngry