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https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-what-is-new.html
Instead, use ndb_perror to obtain error message information from NDB error codes. Beginning with this release, MySQL NDB Cluster is being developed in parallel with the standard MySQL 8.0 server under a new unified release model with the following ... The following sections describe changes in the implementation of MySQL NDB Cluster in NDB Cluster 8.0 through 8.0.44, as compared to earlier release ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-shell-tutorial-javascript-documents-find.html
mysql-js> db.countryinfo.find() [ { "GNP": 828, "Code:": "ABW", "Name": "Aruba", "IndepYear": null, "geography": { "Continent": "North America", "Region": "Caribbean", "SurfaceArea": 193 }, "government": { "GovernmentForm": "Nonmetropolitan ... You ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-shell-tutorial-python-documents-find.html
mysql-py> db.countryinfo.find() [ { "GNP": 828, "Code:": "ABW", "Name": "Aruba", "IndepYear": null, "geography": { "Continent": "North America", "Region": "Caribbean", "SurfaceArea": 193 }, "government": { "GovernmentForm": "Nonmetropolitan ... You ...
https://dev.mysql.com/doc/refman/8.0/en/windows-troubleshooting.html
When installing and running MySQL for the first time, you may encounter certain errors that prevent the MySQL server from starting. This section helps you diagnose and correct some of these errors. Your first resource when troubleshooting server ...
https://dev.mysql.com/doc/refman/8.0/en/check-table.html
option: { FOR UPGRADE | QUICK | FAST | MEDIUM | EXTENDED | CHANGED } CHECK TABLE checks a table or tables for errors. Column Value Table The table name Op Always check Msg_type status, error, info, note, or warning Msg_text An informational message ...CHECK TABLE can also check views for problems, such as tables that are referenced in the view definition that no longer ...
https://dev.mysql.com/doc/refman/8.0/en/explain.html
You should be aware that while this makes the output easier to read, it also renders the JSON invalid, causing JSON functions to raise an error. If the value of explain_format is JSON, EXPLAIN ANALYZE returns an error unless FORMAT=TREE is specified ... {EXPLAIN | DESCRIBE | DESC} tbl_name [col_name | wild] {EXPLAIN | DESCRIBE | DESC} [explain_type] {explainable_stmt | FOR CONNECTION connection_id} {EXPLAIN | DESCRIBE | DESC} ANALYZE [explain_type] select_stmt explain_type: { FORMAT = format_name } format_name: { TRADITIONAL | JSON | TREE } explainable_stmt: { select_stmt | TABLE ...
https://dev.mysql.com/doc/refman/8.0/en/create-table-foreign-keys.html
A duplicate symbol results in an error similar to: ERROR 1005 (HY000): Can't create table 'test.fk1' (errno: 121). If an ON UPDATE CASCADE or ON DELETE CASCADE subclause is only defined for one FOREIGN KEY clause, cascading operations fail with an ... MySQL supports foreign keys, which permit cross-referencing related data across tables, and foreign key constraints, which help keep the related data ...
https://dev.mysql.com/doc/refman/8.0/en/locking-service.html
A namespace or lock name specified as NULL, the empty string, or a string longer than 64 characters results in an ER_LOCKING_SERVICE_WRONG_NAME error. If the timeout is reached without successful lock acquisition, an ER_LOCKING_SERVICE_TIMEOUT error ... MySQL distributions provide a locking interface that is accessible at two levels: At the SQL level, as a set of loadable functions that each map onto calls to the service ...
https://dev.mysql.com/doc/refman/8.0/en/set-variable.html
User-Defined Variable Assignment Parameter and Local Variable Assignment System Variable Assignment SET Error Handling Multiple Variable Assignment System Variable References in Expressions User-Defined Variable Assignment User-defined variables are ...variable: { user_var_name | param_name | local_var_name | {GLOBAL | @@GLOBAL.} system_var_name | {PERSIST | @@PERSIST.} system_var_name | {PERSIST_ONLY | @@PERSIST_ONLY.} system_var_name | [SESSION | ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-system-variables.html
performance_schema_error_size Command-Line Format --performance-schema-error-size=# System Variable performance_schema_error_size Scope Global Dynamic No SET_VAR Hint Applies No Type Integer Default Value number of server error codes Minimum Value 0 ...Although the value can be set anywhere from 0 to its maximum, the intended use is to set it to either its default (to instrument all errors) or 0 (to instrument no ...