mysql-connector

问题 Edit: Updated problem description based on testing - 12 Sep 2011. I have this query that throws a NotSupportedException ("Specified method is not supported.") whenever I call .ToList(). IQueryable<FileDefinition> query = db .FileDefinitions .Include(x => x.DefinitionChangeLogs) .Include(x => x.FieldDefinitions.Select(y => y.DefinitionChangeLogs)) // bad .Include(x => x.FieldDefinitions.Select(y => y.FieldValidationTables)) // bad .Where(x => x.IsActive); List<FileDefinition> retval = query

问题 Edit: Updated problem description based on testing - 12 Sep 2011. I have this query that throws a NotSupportedException ("Specified method is not supported.") whenever I call .ToList(). IQueryable<FileDefinition> query = db .FileDefinitions .Include(x => x.DefinitionChangeLogs) .Include(x => x.FieldDefinitions.Select(y => y.DefinitionChangeLogs)) // bad .Include(x => x.FieldDefinitions.Select(y => y.FieldValidationTables)) // bad .Where(x => x.IsActive); List<FileDefinition> retval = query

问题 I try to Delete a Row from the Database on the phpAdmin the Query is working fine, but when I execute it with the Code: MySqlCommand getUserID = new MySqlCommand("SELECT UserID FROM User", connection); MySqlDataReader reader = getUserID.ExecuteReader(); I get the Error: Destination array is not long enough to copy all the items in the collection. Check array index and length. I Insert the to deleting user before without any trouble. The Database has an UserID with properties Unique , Int

问题 I try to Delete a Row from the Database on the phpAdmin the Query is working fine, but when I execute it with the Code: MySqlCommand getUserID = new MySqlCommand("SELECT UserID FROM User", connection); MySqlDataReader reader = getUserID.ExecuteReader(); I get the Error: Destination array is not long enough to copy all the items in the collection. Check array index and length. I Insert the to deleting user before without any trouble. The Database has an UserID with properties Unique , Int

问题 I was building a login/signup program in Python by using MySQL connector lib. My code wasn't able to store values in MySQL. I don't know why it is happening. When i check MySQL, then it says empty set . Here's my code: import mysql.connector mydb = mysql.connector.connect( host="localhost", user="root", passwd="" ) mycursor = mydb.cursor() mycursor.execute("CREATE DATABASE login;") # sign up email = input("Your email: ") passw = input("Your password: ") confirm_pass = input("Confirm password:

问题 I have seen & read over 10 similar questions but am still unable to figure it out. I am using windows7 / Eclipse Helios Service Release 1 / mysql-connector-java-5.1.13-bin.jar. Everything worked until yesterday, and noW I get this error. I am not aware of anything I did that could have caused this (but maybe still...). There are no duplicates of this file on my system (nor any other mysql-connector-*). I am not sure where eclipse is looking for this file, it is sitting under my projects

问题 In my application (VC++/Windows 8) I am having 7 threads each have opened connection to MySQL database. All these threads concurrently try to increment value of single field in a table. To do this I've created a sample table DEMO_TABLE having columns MyIndex and MyCounter (both integers) and added a row to it having MyIndex field value 0. Then I am calling executeUpdate through each thread using MySQL Connector C++ : executeUpdate("UPDATE DEMO_TABLE SET MyCounter = (MyCounter + 1) WHERE

问题 I'm working on a website and it worked fine the past month, suddenly yesterday it crashed and says Wrong COM_STMT_PREPARE response size. Received 7 . This is my code in the controller: public function newsFeed() { // get all data needed for the news page try{ $news = DB::SELECT("SELECT n.newId ,n.title_en ,n.title_es ,n.description_en ,n.description_es ,n.newMainImg ,n.tags ,DATE_FORMAT(n.createDate, '%b - %e - %Y') as publishDate_en ,DATE_FORMAT(n.createDate, '%e - %b - %Y') as publishDate

问题 I have installed the MySQL NET Connector 6.7.2 and am currently unable to get Visual Studio 2012 to recognize that the connector is installed. Is there a trick to this with the beta connector? I see in that in the MySQL developer blog there is a mention of a separation of utility for Visual Studio integration starting in 6.7.X releases for the connector. MySQL Connector/Net 6.7.2 Beta has been released Am I missing a second utility to make this happen? 回答1: Starting with version 6.7,

问题 I'm using the MySQL Connector for .NET to manage a MySQL database from C#. When I try to insert an enum into the database it appends the enum with the value one less than the actual one. public enum MyEnum { FirstValue, SecondValue, ThirdValue; } public void InsertEnum() { MySqlConnection con = new MySqlConnection(connStr); string sql = "INSERT INTO table (Col1) VALUES (@enumVal);"; MySqlCommand cmd = new MySqlCommand(sql, con); cmd.Parameters.AddWithValue("@enumVal", MyEnum.SecondValue); /