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https://dev.mysql.com/doc/refman/5.7/en/packet-too-large.html
When a MySQL client or the mysqld server receives a packet bigger than max_allowed_packet bytes, it issues an ER_NET_PACKET_TOO_LARGE error and closes the connection. With some clients, you may also get a Lost connection to MySQL server during query ... A communication packet is a single SQL statement sent to the MySQL server, a single row that is sent to the client, or a binary log event sent from a replication source server to a ...
https://dev.mysql.com/doc/refman/5.7/en/adding-collation-simple-8bit.html
This section describes how to add a simple collation for an 8-bit character set by writing the <collation> elements associated with a <charset> character set description in the MySQL Index.xml file. The example adds a collation named latin1_test_ci ...
https://dev.mysql.com/doc/refman/5.7/en/old-native-pluggable-authentication.html
MySQL includes two plugins that implement native authentication; that is, authentication based on the password hashing methods in use from before the introduction of pluggable authentication. This section describes mysql_old_password, which ...
https://dev.mysql.com/doc/refman/5.7/en/ignoring-user.html
If you get the following error, it means that when mysqld was started or when it reloaded the grant tables, it found an account in the user table that had an invalid password. Found wrong password for user 'some_user'@'some_host'; ignoring user As ...
https://dev.mysql.com/doc/refman/5.7/en/creating-ssl-rsa-files-using-mysql.html
They can be enabled at startup and inspected but not set at runtime. For files generated by the server, if the resulting CN values exceed 64 characters, the _suffix portion of the name is omitted. SSL files created by the server or by ...For some ...
https://dev.mysql.com/doc/refman/5.7/en/information-schema-innodb-ft-index-cache-table.html
The same word can occur several times within the cache table, once for each combination of DOC_ID and POSITION values. The INNODB_FT_INDEX_CACHE table provides token information about newly inserted rows in a FULLTEXT index. Before querying it, set ...
https://dev.mysql.com/doc/refman/5.7/en/information-schema-engines-table.html
In the latter case, the error log should contain a reason indicating why the option is disabled. This is particularly useful for checking whether a storage engine is supported, or to see what the default engine is. The ENGINES table has these ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema-summary-tables.html
Summary tables provide aggregated information for terminated events over time. That might be useful, for example, after you have made a runtime configuration change. The tables in this group summarize event data in different ways. Each summary ...
https://dev.mysql.com/doc/refman/5.7/en/insert-delayed.html
The DELAYED option for the INSERT statement is a MySQL extension to standard SQL. The server recognizes but ignores the DELAYED keyword, handles the insert as a nondelayed insert, and generates an ER_WARN_LEGACY_SYNTAX_CONVERTED warning: INSERT ...
https://dev.mysql.com/doc/refman/5.7/en/populating-spatial-columns.html
After you have created spatial columns, you can populate them with spatial data. Values should be stored in internal geometry format, but you can convert them to that format from either Well-Known Text (WKT) or Well-Known Binary (WKB) format. For ...