MySQL Error 1045 – Access Denied

I’ve had quite a headache couple of days ago with the Access Denied 1045 error with remote access to MySQL, so I’ve created a step-by-step guide to debugging this:

Error 1045 Access Denied Troubleshooting Guide

PHP+MySQL and Unicode/UTF-8

Most of the wide-spread languages support Unicode and/or UTF-8 at least in some form; post-2K languages support Unicode quite commonly, but there are always few things to look after.

Create User in MySQL if It Does Not Exist

MySQL does not support create user if not exists syntax as it does with create table and create procedure. This is pretty weird, as it just boils down to checking whether single row exists in the `mysql`.`user` table.

How to create table in MSSQL only if it does not exist

Often you wanna make sure some tables in database exist, but you want to avoid getting the error message “There is already an object named ‘yourtable’ in the database.”, that you would get by simply issuing the CREATE TABLE command.

For these cases, MSSQL offers keyword EXISTS (most SQL engines provide similar facilities; e.g. MySQL C API allows you to directly check for the existance of database and/or table).

All you have to do in MSSQL is make sure the table is not yet registered in the sysobjects table, using the following SQL command:

IF NOT EXISTS (SELECT * FROM sysobjects WHERE id = object_id(N'[dbo].[tablename]')
AND OBJECTPROPERTY(id, N'IsUserTable') = 1)
CREATE TABLE [dbo].[tablename] ( columns specification );

where “tablename” is name of table you want to create, and “columns specification” is the usual definition of table’s columns. Feel free to extend the table definition to your liking.

Or you might want to DROP the table before re-creating it:

IF EXISTS (SELECT * FROM sysobjects WHERE id = object_id(N'[dbo].[tablename]')
AND OBJECTPROPERTY(id, N'IsUserTable') = 1)
DROP TABLE [dbo].[tablename];
CREATE TABLE [dbo].[tablename] ( columns specification );

Yes, that’s all. Good luck!