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https://dev.mysql.com/doc/refman/8.4/en/channels-startup-options.html
--max-relay-log-size=size Maximum size of the individual relay log file for each channel; after reaching this limit, the file is rotated. --relay-log-space-limit=size Upper limit for the total size of all relay logs combined, for each individual ...
https://dev.mysql.com/doc/refman/8.4/en/performance-schema-connection-attribute-tables.html
For connections initiated using the C API, the libmysqlclient library imposes a limit of 64KB on the aggregate size of connection attribute data on the client side: Calls to mysql_options() that cause this limit to be exceeded produce a ...
https://dev.mysql.com/doc/refman/8.4/en/using-system-variables.html
For example, to prevent the value of sort_buffer_size from being increased to more than 32MB at runtime, use the option --maximum-sort-buffer-size=32M. The MySQL server maintains many system variables that configure its operation. Section 7.1.8, ...
https://dev.mysql.com/doc/internals/en/innodb-field-contents.html
It happens that these system columns are the row ID, the transaction ID, and the rollback pointer, but their values don't matter now. Helpful Notes About "Field Start Offsets": Notice that the sizes of the record's fields, in forward order, are: 6, ... The Field Contents part of the record has all the ...
https://dev.mysql.com/doc/refman/8.4/en/string-functions.html
mysql> SELECT CHAR(77,121,83,81,'76'); +--------------------------------------------------+ | CHAR(77,121,83,81,'76') | +--------------------------------------------------+ | 0x4D7953514C | +--------------------------------------------------+ 1 row ...For functions that operate on string positions, the first position is numbered ...
https://dev.mysql.com/doc/connectors/en/connector-python-api-mysqlcursor-fetchmany.html
Syntax: rows = cursor.fetchmany(size=1) This method fetches the next set of rows of a query result and returns a list of tuples. The number of rows returned can be specified using the size argument, which defaults to one. If no more rows are ...
https://dev.mysql.com/doc/connector-python/en/connector-python-api-mysqlcursor-fetchmany.html
Syntax: rows = cursor.fetchmany(size=1) This method fetches the next set of rows of a query result and returns a list of tuples. The number of rows returned can be specified using the size argument, which defaults to one. If no more rows are ...
https://dev.mysql.com/doc/heatwave/en/mys-hw-lakehouse-selective-load.html
Optionally, query the number of rows in the table to confirm all files loaded successfully. mysql> ALTER TABLE data_table_1 ENGINE_ATTRIBUTE='{"dialect": {"format": "csv", "has_header": true, "field_delimiter": ",", "record_delimiter": "\\n"}, ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-nutshell.html
The amount of memory allocated for this optimization can be controlled by setting the value of the set_operations_buffer_size server system variable; increasing the buffer size can further improve execution times of some statements using these ...
https://dev.mysql.com/doc/refman/8.4/en/performance-schema-error-log-table.html
The table implementation uses a fixed-size, in-memory ring buffer, with old events automatically discarded as necessary to make room for new ones. row *************************** LOGGED: 2020-08-06 09:25:00.338624 THREAD_ID: 0 PRIO: System ... Of ...