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Description

This error indicates that a Spatial Reference System (SRS) definition contains the same attribute specified multiple times. It typically arises when creating or altering an SRS, leading to an ambiguous or invalid definition that MySQL cannot process.

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Error Message

Multiple definitions of attribute %s.

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Known Causes

4 known causes

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Manual Input Error

Accidental re-typing or misplacement of an attribute definition within an SRS statement.

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Copy-Paste Duplication

Copying and pasting parts of an SRS definition without thorough review, inadvertently introducing redundant attributes.

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Automated Script Issue

Bugs in tools or scripts that programmatically generate SRS definitions can incorrectly duplicate attributes.

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Syntax Misinterpretation

Lack of understanding of the Spatial Reference System definition syntax, leading to unintended attribute repetition.

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Solutions

3 solutions available

1. Identify and Remove Duplicate Attribute Definitions medium

Locate and delete redundant attribute definitions within your schema.

1

Connect to your MySQL server using a client like `mysql` or MySQL Workbench.

2

Identify the specific attribute name causing the duplicate definition. The error message 'Multiple definitions of attribute %s' will contain this name. Let's assume the attribute is named 'user_status' for this example.

3

Query the `INFORMATION_SCHEMA.COLUMNS` table to find all occurrences of this attribute across your databases and tables. Replace 'user_status' with your actual attribute name.

SELECT TABLE_SCHEMA, TABLE_NAME, COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS WHERE COLUMN_NAME = 'user_status';

4

Examine the output of the previous query. You will likely see multiple entries for the same attribute name in different tables or even within the same table if it's being defined in multiple contexts (e.g., as a regular column and within a generated column definition).

5

Based on your schema design and the intended use, determine which definition is the correct one and which are duplicates. You may need to consult your application's code or schema documentation.

6

Once identified, use `ALTER TABLE` statements to drop the duplicate column definitions. **Caution:** This will permanently remove the column and its data. Ensure you have backups or have confirmed the duplication.

ALTER TABLE your_database.your_table DROP COLUMN user_status;

7

If the duplicate is within a `CREATE TABLE` or `ALTER TABLE` statement that is being executed, correct the statement to remove the redundant attribute definition.

2. Review Stored Procedures, Triggers, and Events medium

Check database objects that dynamically create or modify schema elements.

1

Connect to your MySQL server.

2

Query `INFORMATION_SCHEMA.ROUTINES` to find stored procedures that might be creating or altering tables and potentially defining attributes. Look for `CREATE TABLE`, `ALTER TABLE` statements within their definitions. Replace 'your_procedure_name' with the actual name.

SELECT ROUTINE_SCHEMA, ROUTINE_NAME FROM INFORMATION_SCHEMA.ROUTINES WHERE ROUTINE_TYPE = 'PROCEDURE' AND ROUTINE_SCHEMA = 'your_database_name';

3

Use `SHOW CREATE PROCEDURE your_database_name.your_procedure_name;` to inspect the procedure's code and identify any duplicate attribute definitions.

SHOW CREATE PROCEDURE your_database_name.your_procedure_name;

4

Repeat steps 2 and 3 for `INFORMATION_SCHEMA.TRIGGERS` and `INFORMATION_SCHEMA.EVENTS` if you suspect these objects are involved in the duplicate definition.

SELECT TRIGGER_SCHEMA, TRIGGER_NAME FROM INFORMATION_SCHEMA.TRIGGERS WHERE TRIGGER_SCHEMA = 'your_database_name';
SELECT EVENT_SCHEMA, EVENT_NAME FROM INFORMATION_SCHEMA.EVENTS WHERE EVENT_SCHEMA = 'your_database_name';

5

Edit the offending stored procedure, trigger, or event to remove the duplicate attribute definition. This might involve directly modifying the SQL code within the object.

DELIMITER $$
CREATE PROCEDURE your_database_name.your_procedure_name() BEGIN
  -- ... your code ...
  -- Remove the duplicate attribute definition here
  -- ... your code ...
END $$
DELIMITER ;

-- Or use ALTER PROCEDURE if available and applicable

3. Examine Application Code and ORM Configurations medium

Ensure your application's data model definitions are consistent and not causing redundant schema modifications.

1

Identify the part of your application that interacts with the MySQL database, particularly where table schemas are managed or modified.

2

If you are using an Object-Relational Mapper (ORM) like Hibernate, SQLAlchemy, or Eloquent, review your model definitions. Ensure that no attribute is being mapped or defined multiple times for the same table.

3

Look for explicit `CREATE TABLE` or `ALTER TABLE` statements within your application code that might be executed during startup or deployment. Ensure these statements are idempotent (can be run multiple times without adverse effects) and do not redefine existing attributes.

4

Check for any database migration scripts or tools. Verify that these scripts do not contain duplicate definitions for the same attribute or attempt to add an attribute that already exists.

5

Correct the application code, ORM configuration, or migration scripts to eliminate the redundant attribute definition. This might involve removing duplicate field declarations, adjusting mapping configurations, or refining migration logic.

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Related Errors

5 related errors

MySQL Error 3709: Duplicate SRS Attribute Definition