Error
Error Code:
3644
MySQL Error 3644: Cannot Change SRID with Spatial Index
Description
This error occurs when you attempt to modify the Spatial Reference System Identifier (SRID) of a column in a MySQL database. It specifically indicates that the operation failed because a spatial index currently exists on that column, preventing the SRID alteration.
Error Message
The SRID specification on the column '%s' cannot be changed because there is a spatial index on the column. Please remove the spatial index before altering the SRID specification.
Known Causes
3 known causesDirect SRID Alteration Attempt
An `ALTER TABLE` statement was executed to change a column's SRID while a spatial index was still present on that specific column.
Overlooking Existing Spatial Index
A database administrator or application attempted to modify column properties without first verifying the presence of spatial indexes.
Incomplete Schema Migration Script
An automated or manual schema migration script failed to include the necessary steps to temporarily drop and then re-create spatial indexes around the SRID alteration.
Solutions
Coming SoonDetailed step-by-step solutions for this error are being prepared. In the meantime, try these general troubleshooting tips:
General Troubleshooting Tips
- Check the error message carefully for specific details
- Review recent changes that might have caused the error
- Search for the exact error code in the official documentation
- Check log files for additional context
- Try restarting the application or service