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https://dev.mysql.com/doc/refman/8.0/en/load-data.html
Unless REPLACE is also specified, LOCAL has the same effect as the IGNORE modifier on the interpretation of input file contents and error handling; see Duplicate-Key and Error Handling, and Column Value Assignment. For example, if mysqld was started ...The file can be read from the server host or the client host, depending on whether the LOCAL modifier is ...
https://dev.mysql.com/doc/refman/8.0/en/faqs-cjk.html
Why do I get Incorrect string value error messages? To see the problem, create a table with one Unicode (ucs2) column and one Chinese (gb2312) column. Please check these references before reporting gb2312 or gbk bugs: The MySQL gbk character set is ... This set of Frequently Asked Questions derives from the experience of MySQL's Support and Development groups in handling many inquiries about CJK (Chinese-Japanese-Korean) ...
https://dev.mysql.com/doc/refman/8.0/en/atomic-ddl.html
DROP TABLE fails with an error if a named table does not exist, and no changes are made, regardless of the storage engine. To avoid this failure scenario, use IF EXISTS syntax in DROP TABLE statements to prevent errors from occurring for tables that ...An atomic DDL statement combines the data dictionary updates, storage engine operations, and binary log writes associated with a DDL operation into a single, atomic ...
https://dev.mysql.com/doc/refman/8.0/en/keyring-functions-general-purpose.html
Attempts to use the functions without the keyring_udf plugin result in an error. Otherwise, an error occurs: ERROR 1123 (HY000): Can't initialize function 'keyring_key_generate'; This function requires keyring_udf plugin which is not installed.
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-programs-ndb-restore.html
It can contain any of the ASCII characters having character codes 32, 35, 38, 40-91, 93, 95, and 97-126; in other words, it can use any printable ASCII characters except for !, ', ", $, %, \, and ^. --core-file Command-Line Format --core-file Write ... The NDB Cluster restoration program is implemented as a separate command-line utility ndb_restore, which can normally be found in the MySQL bin ...
https://dev.mysql.com/doc/refman/8.0/en/charset-unicode-sets.html
This section describes the collations available for Unicode character sets and their differentiating properties. MySQL supports multiple Unicode character sets: utf8mb4: A UTF-8 encoding of the Unicode character set using one to four bytes per ...
https://dev.mysql.com/doc/refman/8.0/en/problems-connecting.html
After a fresh installation, if you try to log on to the server as root without using a password, you might get the following error message. $> mysql -u root ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO) It means ... If you encounter problems when you try to connect to the MySQL server, the following items describe some courses of action you can take to correct the ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-summary-tables.html
Summary tables provide aggregated information for terminated events over time. The tables in this group summarize event data in different ways. Each summary table has grouping columns that determine how to group the data to be aggregated, and ...
https://dev.mysql.com/doc/refman/8.0/en/show-warnings.html
SHOW WARNINGS [LIMIT [offset,] row_count] SHOW COUNT(*) WARNINGS SHOW WARNINGS is a diagnostic statement that displays information about the conditions (errors, warnings, and notes) resulting from executing a statement in the current session. If ...
https://dev.mysql.com/doc/refman/8.0/en/declare-condition.html
DECLARE condition_name CONDITION FOR condition_value condition_value: { mysql_error_code | SQLSTATE [VALUE] sqlstate_value } The DECLARE ... It can take the following forms: mysql_error_code: An integer literal indicating a MySQL error code. Do not ...CONDITION statement declares a named error condition, associating a name with a condition that needs specific ...