MySQL
SQL

MySQL Error #1045 Explained: Everything You Need to Know

intro

Let’s learn everything you need to know about the unpleasant MySQL error #1045.

Tools used in the tutorial
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Dbvisualizer DBVISUALIZER
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THE MYSQL DATABASE

How many times have you worked with MySQL just to come across an error? “Too many”, we hear you saying. And we do sympathize—MySQL errors are something no one wants to see, yet they’re there hiding and waiting for you to make your next mistake so they can strike. MySQL error 1045 is one of them!

In this article, you will learn what the MySQL error 1045 is and why it occurs. Of course, we’ll also tell you how to prevent it from occurring in your database management systems, too!

Let’s dive in!

What is the MySQL Error 1045?

In essence, the MySQL error 1045 denotes no ability to perform a certain action. Think of the last time you’ve attempted to run any query—if it returned any results, it executed successfully. And it executed successfully because the SQL query has gone through a couple of necessary steps:

  1. MySQL Server is getting ready to run our query.
  2. MySQL Server is checking whether our user has the necessary privileges to run the aforementioned SQL query.
  3. MySQL Server is opening tables and initializing other processes.
  4. MySQL is executing our query and sending us back the results.
  5. Our query ends, tables are closed, items are set free (so they can be used by upcoming queries if necessary), and MySQL cleans up preparing for the next round of queries to hit its infrastructure.

If everything goes well, we see a result set like so (for this specific example, we’ve selected an ID and a password hash using the SQL CONCAT function):

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1 SELECT CONCAT(id,'|',phash) AS id_and_hash FROM demo WHERE username = 'I love animals';
MySQL Server Returning Results with DbVisualizer
MySQL Server Returning Results with DbVisualizer

Nothing too complex, right? We execute a query, we get a result. It’s what happens internally that should worry us: a result set will only be returned if a user has the necessary permissions to run such queries. If the user running such a query does not have the required permissions, a MySQL error 1045 will be returned.

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1 ERROR 1045 (28000): Access denied for user 'user'@'localhost' (using password: YES)

Solving the MySQL Error 1045

For some, the MySQL error 1045 might be even more baffling because such an error occurs not only when users don’t have permissions. In rare cases, this error may still occur even after you are 100% sure that the user has enough permissions to run such queries. There are a couple of root causes to this problem:

  • Permissions have been modified, but haven’t been flushed (saved.) To solve this issue and save your progress, run a FLUSH PRIVILEGES; query.
  • Do you have an anonymous user in your database? Users like ‘’@’localhost’ or ‘’@’127.0.0.1’ are counted as anonymous users by MySQL and when such users are active, MySQL needs to select to use one of these users. In these situations, the server has its own logic and often uses sorting rules that let it choose specific Host values as it desires.
  • There's no such user in your database! This may seem trivial, but you should know that when you try to connect to MySQL through the CLI like this: mysql -u username [-ppassword] MySQL expects the user of username to exist in the database. Does the user exist? No? Well, you’ve just found the solution to the problem…
  • Try using sudo when logging in through the CLI. Logging in using mysql -u username [-ppassword] doesn’t work? sudo will help you.
  • TCP/IP vs. Unix. In older versions of MySQL (which we sincerely hope are not in use by your team), when you'd type mysql -u root [-ppassword], you would connect to MySQL using a Unix socket. Some grant privileges, such as 'user'@'%' would only match TCP/IP connections, so you would need to define 'user'@'localhost' instead of 'user'@'127.0.0.1’
  • Are you logging in properly? MySQL allows whitespace in between -u when specifying a user, but not when specifying the password. We’d recommend you define the password for your user in my.cnf as a whole since it’d prevent anyone snooping on the last commands run via the CLI to observe user passwords.
  • If nothing works, you can also run this SQL query as a last resort: This query below will solve all of your problems, but it should only be used as a last resort since it would make your user a root user inside of your database. Be very careful.
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1 GRANT ALL PRIVILEGES ON *.* TO 'user@localhost' IDENTIFIED BY 'password' WITH GRANT OPTION;

Other Things You Should Know

Unfortunately, the MySQL error 1045 isn’t the only one you’re likely to see within your database infrastructure. If you’re facing this error, others will likely come up too. This is not a very bad thing, but it will certainly annoy you to deal with problem after problem in your database infrastructure, won’t it?

Luckily, you have the database client with the highest user satisfaction—DbVisualizer—that can help you solve your problems. For example, its powerful query builder will help you select the columns that you want to query, and then build the query for you:

Building SQL Queries with DbVisualizer
Building SQL Queries with DbVisualizer
The SQL Query Created by DbVisualizer
The SQL Query Created by DbVisualizer

DbVisualizer has a long history of being the preferred database tool for developers and data analysts — with a click of a button, it can format your queries, help you navigate complex database schemas, and more. Oh, and it also connects to all databases you can think of. Cool, yeah? Grab a free trial today, and we’ll see you in the next one.

FAQ

What is the MySQL Error 1045?

The MySQL error 1045 denotes missing permissions to execute queries. It usually occurs when the user you’re trying to run SQL queries with is missing permission to run them.

How to Solve the MySQL Error 1045?

This MySQL error can be solved in different ways: it mostly has to do with permissions not being flushed (saved) in your database, but can also occur if there’s no such user in your database, or if you’re not using sudo. If nothing works, use the workarounds we specified in this article.

Why Should I Use DbVisualizer?

DbVisualizer is the SQL client with the highest user satisfaction on the market. It’s used by various prominent companies, such as Tesla, Volkswagen, NASA, and others. If you’re not sure that it’s the tool for you, grab a free trial.

Is there a website helping me prevent errors in my database infrastructure?

Yes! Take a look at the Database Dive YouTube channel where you can learn many things about managing, securing, and optimizing your database instances.

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About the author
LukasVileikisPhoto
Lukas Vileikis
Lukas Vileikis is an ethical hacker and a frequent conference speaker. He runs one of the biggest & fastest data breach search engines in the world - BreachDirectory.com, frequently speaks at conferences and blogs in multiple places including his blog over at lukasvileikis.com.
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