Common MySQL Errors and How to Fix Them

Every MySQL user meets the same handful of errors. Learning to read them turns panic into a two-minute fix — the error message almost always tells you exactly what's wrong.

Key Points

• 1045 Access denied: wrong user/password or missing privileges — check GRANTS
• 1064 Syntax error: read the position MySQL points to; check reserved words and quotes
• 1054 Unknown column: typo or wrong table alias in your query
• 1062 Duplicate entry: unique key violation — decide between fixing data or upserting
• 2003 Can't connect: server down, wrong host/port, or firewall blocking 3306
• Lock wait timeout: another transaction holds the row — find it via SHOW PROCESSLIST