mysql-connector

Getting MySQL error stack trace on Oracle JDBC Connection

强颜欢笑 提交于 2019-11-29 15:33:46
I am facing very odd error while making Oracle JDBC connection using a connection string. I am giving username as "sys"(which should be sys as sysdba) and ideally, it should come through ojdbc6.jar but in my case, it is coming from mysql-connector-java-8.0.11.jar which is also included in my project. Please help as I have to keep both the jars in my project. When I remove the mysql-connector-java-8.0.11.jar, I get the expected oracle error mentioned below. private static Connection createConnectionOracle() { Connection conn = null; try { Class.forName("oracle.jdbc.driver.OracleDriver"); conn =

com.mysql.jdbc.Driver not found with mysql connector in buildpath

那年仲夏 提交于 2019-11-29 12:46:21
I use Eclipse juno. I have mysql-connector-java-5.1.22-bin.jar in my buildpath and i try to establish a DB connection to my mysql database. Here is my code public Connection getConnectionToDB() { try { Class.forName(driver); Connection con = DriverManager.getConnection(url + dbName, userName, password); return con; } catch (Exception e) { e.printStackTrace(); } return null; } When i debug it i found out the problem is at: Class.forName(driver); i also tried replacing it with: Class.forName(driver).newInstance(); At this line, it breaks out to the exception and throws this exception: java.lang

Create Spark Dataframe from SQL Query

青春壹個敷衍的年華 提交于 2019-11-29 07:01:28
问题 I'm sure this is a simple SQLContext question, but I can't find any answer in the Spark docs or Stackoverflow I want to create a Spark Dataframe from a SQL Query on MySQL For example, I have a complicated MySQL query like SELECT a.X,b.Y,c.Z FROM FOO as a JOIN BAR as b ON ... JOIN ZOT as c ON ... WHERE ... and I want a Dataframe with Columns X,Y and Z I figured out how to load entire tables into Spark, and I could load them all, and then do the joining and selection there. However, that is

MySQL Entity Framework 4.0 Stored Procedure Field Mapping

半世苍凉 提交于 2019-11-29 06:19:19
Has anyone here used MySQL with the entity framework 4.0 and stored procedures? When I add a SP, it does not show any of my fields that I need to input. I also see no way to manually add them. When I click Function Import Mapping, it simply says "Select an Entity or Association on the Entity Designer Model Browser to edit it's mapping". Any help is appreciated. I am using the .NET Connector 6.3.6 wickiy due to the bug #55778 (Stored procedure parameters are omitted during update of the entity data model) it is not possible to automatically import MySQL Stored Procedures into a entity data

MySql with JAVA error. The last packet sent successfully to the server was 0 milliseconds ago [duplicate]

心已入冬 提交于 2019-11-29 02:57:15
问题 This question already has answers here : com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure (35 answers) Closed 9 months ago . I have read about this exception a lot, but I can't solve my. Mysql server is working. I can connect to it from NetBeans, but I can't connect to it from java code. Exception in thread "main" com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure The last packet sent successfully to the server was 0

How can I transfer data between 2 MySQL databases?

早过忘川 提交于 2019-11-28 21:16:42
I want to do that using a code and not using a tool like "MySQL Migration Toolkit". The easiest way I know is to open a connection (using MySQL connectors) to DB1 and read its data. Open connection to DB2 and write the data to it. Is there a better/easiest way ? First I'm going to assume you aren't in a position to just copy the data/ directory, because if you are then using your existing snapshot/backup/restore will probably suffice (and test your backup/restore procedures into the bargain). In which case, if the two tables have the same structure generally the quickest, and ironically the

Add List<int> to a mysql parameter

别说谁变了你拦得住时间么 提交于 2019-11-28 19:28:55
I have this question about the MySqlParameter from the .NET connector. I have this query: SELECT * FROM table WHERE id IN (@parameter) And the MySqlParameter is: intArray = new List<int>(){1,2,3,4}; ...connection.Command.Parameters.AddWithValue("parameter", intArray); This is possible? Is possible to pass an array of int to a single MySqlParameter? The other solution will be convert the array of int to a string such like "1,2,3,4", but this, when i pass it to the MySqlParameter and this is recognized as a string, it puts in the sql query like "1\,2\,3\,4" and this do not return the expected

How to use python 3.5.1 with a MySQL database

岁酱吖の 提交于 2019-11-28 18:58:13
I have been trying to use MySQL in a Python project I've been working on. I downloaded the connector: mysql-connector-python-2.1.3-py3.4-winx64 here. I already had Python 3.5.1 installed. When I tried to install the connector, it didn't work because it required python 2.7 instead. I have searched on many sites, even on StackOverflow I couldn't find a solution. Thanks for any help. S0H31L I did the steps below with Python 3.5.1 and it works: Download driver from here Driver installation in cmd, in this folder Python\Python35\PyMySQL-0.7.4\pymysql python setup.py build python setup.py install

mysql.h file can't be found

て烟熏妆下的殇ゞ 提交于 2019-11-28 16:42:36
i'm trying to install connection between c++ and mysql in ubuntu 12.04. i've installed mysql-client, mysql-server, libmysqlclient15-dev, libmysql++-dev. but when i try to compile the code i got the error: mysql.h there is no such file . i looked in the folders, there is mysql.h file, i can't understand why it can't find it. here is my code: /* Simple C program that connects to MySQL Database server*/ #include <mysql.h> #include <stdio.h> main() { MYSQL *conn; MYSQL_RES *res; MYSQL_ROW row; char *server = "localhost"; char *user = "root"; //set the password for mysql server here char *password

java.net.ConnectException: Connection refused

自古美人都是妖i 提交于 2019-11-28 14:38:27
I am trying to connect to a mysql database on remote server and whenever I try to run the code it is giving me connection refused exception. Connection con = null; String driver = "com.mysql.jdbc.Driver"; String url1="jdbc:mysql://IPADDRESS:3306/"; String db = "hola"; String dbUser = "root"; String dbPasswd = "root"; Class.forName(driver).newInstance(); con = DriverManager.getConnection(url1+db, dbUser, dbPasswd); System.out.println("Database Connection Established"); Also, when I telnet with that IP on a port 3306 it is giving me connection refused. How can I make sure that my server listens