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https://dev.mysql.com/doc/refman/8.0/en/charset-connection.html
The server sends responses, such as result sets or error messages, over the connection back to the client. Connection Character Set and Collation System Variables Impermissible Client Character Sets Client Program Connection Character Set ... A ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-instrument-naming.html
Example names: wait/io/file/myisam/log wait/io/file/mysys/charset wait/lock/table/sql/handler wait/synch/cond/mysys/COND_alarm wait/synch/cond/sql/BINLOG::update_cond wait/synch/mutex/mysys/BITMAP_mutex wait/synch/mutex/sql/LOCK_delete ... An ...
https://dev.mysql.com/doc/refman/8.0/en/create-index.html
For a unique index, an error occurs regardless of SQL mode because reducing the index length might enable insertion of nonunique entries that do not meet the specified uniqueness requirement. An error occurs if a key part definition contains ...
https://dev.mysql.com/doc/refman/8.0/en/replication-features-triggers.html
If an upgraded replication source server still has old replicas using MySQL versions that do not support multiple triggers, an error occurs on those replicas if a trigger is created on the source for a table that already has a trigger with the same ... With statement-based replication, triggers executed on the source also execute on the ...
https://dev.mysql.com/doc/refman/8.0/en/show-replica-status.html
In MySQL 8.0, all error codes and messages displayed in the Last_SQL_Errno and Last_SQL_Error columns correspond to error values listed in Server Error Message Reference. Note When the replication SQL thread receives an error, it reports the error ... SHOW {REPLICA | SLAVE} STATUS [FOR CHANNEL channel] This statement provides status information on essential parameters of the replica ...
https://dev.mysql.com/doc/refman/8.0/en/json-validation-functions.html
row *************************** Level: Error Code: 3934 Message: The JSON document location '#/latitude' failed requirement 'maximum' at JSON Schema location '#/properties/latitude'. row *************************** Level: Error Code: 3819 Message: ...If at least one of the arguments is not valid JSON, the function raises an error (ER_INVALID_TYPE_FOR_JSON) In addition, if the schema is not a valid JSON object, the function returns ...
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/gone-away.html
In this case, you normally get one of the following error codes (which one you get is operating system-dependent). Error Code Description CR_SERVER_GONE_ERROR The client couldn't send a question to the server. This section also covers the related ...By default, the server closes the connection after eight hours if nothing has ...
https://dev.mysql.com/doc/refman/8.0/en/upgrading-from-previous-series.html
Incompatible change: Several server error codes are not used and have been removed (for a list, see Features Removed in MySQL 8.0). A table creation statement that would result in a partitioned table using a storage engine without such support fails ... Before upgrading to MySQL 8.0, review the changes described in this section to identify those that apply to your current MySQL installation and ...
https://dev.mysql.com/doc/refman/8.0/en/extensions-to-ansi.html
Be warned that if you use them, your code is most likely not portable to other SQL servers. To perform case-sensitive comparisons instead, you should declare your columns with the BINARY attribute or use the BINARY cast, which causes comparisons to ... MySQL Server supports some extensions that you are not likely to find in other SQL ...