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https://dev.mysql.com/doc/refman/8.0/en/what-is-mysql.html
Depending on your programming environment, you might enter SQL directly (for example, to generate reports), embed SQL statements into code written in another language, or use a language-specific API that hides the SQL syntax. If you wish, you may ...
https://dev.mysql.com/doc/refman/8.0/en/resignal.html
RESIGNAL makes it possible to both handle an error and return the error information. Otherwise, RESIGNAL is illegal and a RESIGNAL when handler not active error occurs. For example, the condition_value can be an SQLSTATE value, and the value can ...
https://dev.mysql.com/doc/refman/8.0/en/json-search-functions.html
An error occurs if target or candidate is not a valid JSON document, or if the path argument is not a valid path expression or contains a * or ** wildcard. An error occurs if the json_doc argument is not a valid JSON document, any path argument is ... The functions in this section perform search or comparison operations on JSON values to extract data from them, report whether data exists at a location within them, or report the path to data within ...
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/data-masking-plugin-functions.html
Return value: The masked Social Security number as a string, or an error if the argument is not the correct length. For example, gen_rnd_us_phone() returns a US phone number that uses the 555 area code, which is not assigned to phone numbers in ...
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/cannot-create.html
If you get an error of the following type for some queries, it means that MySQL cannot create a temporary file for the result set in the temporary directory: Can't create/write to file '\\sqla3fe_0.ism'. The preceding error is a typical message for ...One fix is to start mysqld with the --tmpdir option or to add the option to the [mysqld] section of your option ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-memcached-troubleshoot.html
loose-daemon_memcached_option='-vvv' If columns specified to hold memcached values are the wrong data type, such as a numeric type instead of a string type, attempts to store key-value pairs fail with no specific error code or message. If you ...
https://dev.mysql.com/doc/refman/8.0/en/crashing.html
The current dynamic row code has been in use for several years with very few problems, but dynamic-length rows are by nature more prone to errors, so it may be a good idea to try this strategy to see whether it helps. If mysqld has died and ... Each ...
https://dev.mysql.com/doc/refman/8.0/en/create-table.html
An error occurs if the table exists, if there is no default database, or if the database does not exist. IF NOT EXISTS Prevents an error from occurring if the table exists. For a unique index, an error occurs regardless of SQL mode because reducing ...| {FULLTEXT | SPATIAL} [INDEX | KEY] [index_name] (key_part,...) [index_option] ...