mysql-connector

问题 i'm running mysql 5.5 with mysql 5.1.18 connector. a simple query of style select * from my_table where column_a in ('aaa','bbb',...) and column b=1; is executed from within java application. the query returns a resultset of 25k rows, 8 columns in each. while reading the results in while loop while(rs.next()) { MyObject c= new MyObject(); c.setA(rs.getString("A")); c.setB(rs.getString("B")); c.setC(rs.getString("C")); ... } a following exception is thrown, usually during the first loops, but

问题 I use mysql.connector to fetch rows in a python script but when I update a table the I don't see the changes. My code is: import mysql.connector database = mysql.connector.connect(host='localhost', user='root', passwd='password', database='my_db') cursor = database.cursor() cursor.execute('SELECT * FROM my_table') print(cursor.fetchall()) cursor.execute('SELECT * FROM my_table') print(cursor.fetchall()) In first time it reads the correct values but at the second time it reads the same values

问题 How to install MySQL Connector on mac and communicate and retrieve information from the database from Visual Studio for Mac. What should you do? When I install Connector not macOS option (remember that I want to install MySQL Connector .NET ) How to do it ? I would like to thank you for every answer :) I've tried a lot of things, I do not have to do it? I expect the answer will be simple but I can not find it. Thank you in advance for any helpful answer :) 回答1: In Project -> Manage NuGet

问题 I download the MySQL C++ Connector, I need it for a project in CLion, now, I was trying to make it run, but it was all in vain, I get the error -1073741515 (0xC0000135), i've read that is about a linking or lib problem. My current CMake: cmake_minimum_required(VERSION 3.6) project(Entrenamiento CXX) set(CMAKE_CXX_STANDARD 14) set(CMAKE_CXX_FLAGS "-Wall") set(SOURCE_FILES main.cpp) set(Entrenamiento_VERSION_MAJOR 1) set(Entrenamiento_VERSION_MINOR 0) add_library(mysqlcppconn SHARED IMPORTED)

问题 I download the MySQL C++ Connector, I need it for a project in CLion, now, I was trying to make it run, but it was all in vain, I get the error -1073741515 (0xC0000135), i've read that is about a linking or lib problem. My current CMake: cmake_minimum_required(VERSION 3.6) project(Entrenamiento CXX) set(CMAKE_CXX_STANDARD 14) set(CMAKE_CXX_FLAGS "-Wall") set(SOURCE_FILES main.cpp) set(Entrenamiento_VERSION_MAJOR 1) set(Entrenamiento_VERSION_MINOR 0) add_library(mysqlcppconn SHARED IMPORTED)

问题 How do I insert these 2 lists into different SQL columns of the same table a = [1,2,3] b = [4,5,6] This is the way to insert one list into a column query = "INSERT INTO tableName (col1) VALUES (%s)" cursor.executemany(query, [(r,) for r in a]) I can't seem to figure out how to insert both the lists into the table, I want list a to be in one column and list b to be in other column 回答1: query = "INSERT INTO tableName (col1, col2) values (%s, %s)" cursor.executemany(query, [(x, y) for x, y in

问题 How do I insert these 2 lists into different SQL columns of the same table a = [1,2,3] b = [4,5,6] This is the way to insert one list into a column query = "INSERT INTO tableName (col1) VALUES (%s)" cursor.executemany(query, [(r,) for r in a]) I can't seem to figure out how to insert both the lists into the table, I want list a to be in one column and list b to be in other column 回答1: query = "INSERT INTO tableName (col1, col2) values (%s, %s)" cursor.executemany(query, [(x, y) for x, y in

问题 I'm having trouble accessing an out parameters values from a stored procedure in MySQL(8x) using Python(3.7) and sql connector (8x). My stored procedure is an update procedure and it is working, however I don't know how to get the out value in code. Here is my stored procedure...I simply want to access the out parameter named success in python. CREATE DEFINER=`root`@`localhost` PROCEDURE `update_due_date`(param_bookId int, param_cardNumber int, param_dueDate date, out success int) BEGIN

问题 When I select a dateTime field, it gets returned as 6 bytes. How can I convert it to a time_point or struct tm? mysqlx::Session session( "mysqlx://root:password@127.0.0.1:33060/catalog" ); auto row = session.sql( "select create_time from information_schema.tables order by 1 LIMIT 1" ).execute().fetchOne(); assert( row[0].getType()==8 );//raw type assert( row[0].getRawBytes().second==6 );//6 bytes var bytes = row[0].getRawBytes().first; //e2 0f 08 0c 0a 32 //2018-08-12 10:50:04 回答1: Hey I just

问题 When I select a dateTime field, it gets returned as 6 bytes. How can I convert it to a time_point or struct tm? mysqlx::Session session( "mysqlx://root:password@127.0.0.1:33060/catalog" ); auto row = session.sql( "select create_time from information_schema.tables order by 1 LIMIT 1" ).execute().fetchOne(); assert( row[0].getType()==8 );//raw type assert( row[0].getRawBytes().second==6 );//6 bytes var bytes = row[0].getRawBytes().first; //e2 0f 08 0c 0a 32 //2018-08-12 10:50:04 回答1: Hey I just