How to fix 'sqlstate 42000 syntax error or access violation 1055'

How to fix "sqlstate 42000 syntax error or access violation 1055"
The error message "SQLSTATE[42000]: Syntax error or access violation: 1055" is a common database-related error that indicates an issue with the SQL syntax or an access violation in the SQL query. This error is often encountered when working with MySQL databases, but it can also occur with other database systems.

The error message is usually followed by a more detailed description of the specific issue, including the line number and the part of the SQL query that caused the error.

Here are some common reasons for this error and possible solutions:

Column Not Found: The error can occur if you reference a column in your query that does not exist in the table. Double-check the column names in your SQL query and ensure they match the actual column names in the table.

Ambiguous Column Names: If you're using multiple tables in your query, and those tables have columns with the same name, you need to specify which table's column you want to use. Use table aliases to disambiguate column names in the query.

Incorrect Syntax: Review your SQL query for any syntax errors, such as missing or misplaced commas, parentheses, or quotation marks.

Invalid Values: Ensure that you are providing valid data for insert or update operations. For example, if you're trying to insert a string into a numeric field, it can cause this error.

Missing or Incorrect Table Joins: If you're using joins to combine data from multiple tables, ensure that you have specified the correct join conditions.

Permissions: Check if the user executing the query has the necessary permissions to access the database and perform the operation.

Reserved Words: Avoid using SQL reserved words as column or table names. If you must use them, make sure to enclose them in backticks (`) or double quotes ("") as required by the specific database system.

Outdated Database Schema: If you have recently made changes to the database schema (e.g., adding or renaming columns), make sure your code reflects those changes correctly.

To troubleshoot the specific issue, carefully examine the SQL query that triggered the error, and compare it against the table structure and data types. If you're still unable to identify the problem, you may need to provide more details about the specific query and the database schema to get further assistance.

[JamesJuma-gsuo]

How solve, sqlsates 42000 system error or access violation: 1055 expression #1 of order by clause is not in group by clause and contains nonaggregated column which is not functionally de pendent on columns in group by clause; this is incompatible with sql_mode=only _full_group_by (connection: MySQL, sql select sum amount as amount, monthname