MySQL error 1147 appears when you attempt to REVOKE or view privileges for a user who never had privileges on the specified table.
MySQL Error 1147: ER_NONEXISTING_TABLE_GRANT means the user@host has no existing privilege entry for the referenced table. Confirm the exact user and host in mysql.tables_priv, then GRANT the required privilege or correct the REVOKE statement to eliminate the error.
There is no such grant defined for user '%s' on host '%s'
MySQL throws error 1147 with message “There is no such grant defined for user ‘user’ on host ‘host’ on table ‘db.table’” when a REVOKE, SHOW GRANTS, or DROP USER action references table-level privileges that do not exist.
The server checks mysql.tables_priv for a matching user@host row and fails if none is found.
Although harmless to data, the error blocks the privilege statement and can break deployment scripts.
The most common trigger is running REVOKE without first issuing the matching GRANT.
Dev teams also meet the error when cloning databases between environments where privilege rows were not migrated.
Automation tools that reapply idempotent DDL may raise 1147 if they attempt to remove historical privileges for users that were cleaned up earlier.
Verify the exact user@host string with SELECT User, Host FROM mysql.user WHERE User='user'. If wrong, correct the REVOKE statement.
If the privilege really should exist, run the appropriate GRANT first, then REVOKE if desired.
For SHOW GRANTS or DROP USER calls, switch to the correct account or create the missing privilege entry. After adjustments, FLUSH PRIVILEGES or restart the server if you modified the grant tables directly.
CI scripts often clean up privileges after tests.
Guard your REVOKE with IF EXISTS logic or check mysql.tables_priv beforehand to skip nonexistent rows.
Database migrations from staging to production sometimes miss tables_priv rows.
Export with mysqldump --routines --events --triggers --all-databases to capture full privilege metadata.
Apply the principle of least privilege but track every GRANT in version control alongside schema migrations so that REVOKE statements always match.
Automate privilege reconciliation using tools such as Galaxy collections so endorsed GRANT scripts run before any cleanup tasks, preventing 1147 in deployment pipelines.
Error 1044 (ER_DBACCESS_DENIED_ERROR) occurs when a user lacks database privileges entirely.
Grant proper rights with GRANT ALL ON db.* TO 'user'@'host'.
Error 1141 (ER_NONEXISTING_GRANT) is similar but at the global or database level rather than table level. The fix strategy mirrors error 1147: ensure the matching GRANT exists before REVOKE.
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No data is modified. The error only blocks the privilege statement.
You can wrap REVOKE in TRY...CATCH or IF EXISTS logic, but fixing the underlying privilege mismatch is safer.
Galaxy stores endorsed GRANT and REVOKE scripts alongside schema migrations, ensuring correct privilege order in every deployment.
Only if you edit the grant tables directly. Standard GRANT and REVOKE statements update privileges instantly.
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