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https://dev.mysql.com/doc/internals/en/packed-record-layout.html
pack bits (!= NULL bits!): One bit per packable column: FIELD_BLOB: Set if blob is empty. => The "pack bits" are rounded up to the next byte boundary. Each field is copied verbatim unless packed according to the "pack bits" paragraph.
https://dev.mysql.com/doc/ndbapi/en/ndb-nodejs-examples-requirements.html
The software requirements for running the examples found in the next few sections are as follows: A working Node.js installation Working installations of the ndb and mysql-js adapters The mysql-js adapter also requires a working installation of the ...
https://dev.mysql.com/doc/heatwave/en/heatwave-errors.html
Workaround: Consider using a non-string or non-BIT type column in the WHERE clause condition. Error number: 1017; Symbol: HW_ER_UNSUPPORTED_AGGREGATE_FUNC_WITH_VARCHAR_OR_BIT_INPUT Message: The aggregate function, [%s], with VARCHAR or BIT input, ...
https://dev.mysql.com/doc/connector-j/en/connector-j-reference-type-conversions.html
MySQL Connector/J is flexible in the way it handles conversions between MySQL data types and Java data types. In general, any MySQL data type can be converted to a java.lang.String, and any numeric type can be converted to any of the Java numeric ...
https://dev.mysql.com/doc/refman/8.4/en/innodb-standard-monitor.html
The Lock Monitor is the same as the Standard Monitor except that it includes additional lock information. Enabling either monitor for periodic output turns on the same output stream, but the stream includes extra information if the Lock Monitor is ...
https://dev.mysql.com/doc/refman/8.4/en/load-data.html
Because the file contents are sent over the connection by the client to the server, using LOCAL is a bit slower than when the server accesses the file directly. BIT values cannot be loaded directly using binary notation (for example, b'011010'). The ...
https://dev.mysql.com/doc/refman/8.4/en/miscellaneous-functions.html
In this case, the GROUPING() return value represents a bitmask combined from the results for each expression, where the lowest-order bit corresponds to the result for the rightmost expression. The value is a 128-bit number represented as a utf8mb3 ...The function return value and type are the same as the return value and type of its argument, but the function result is not checked for the ONLY_FULL_GROUP_BY SQL ...
https://dev.mysql.com/doc/refman/8.4/en/myisamchk-table-info.html
uint24 NULL 0 1024 Field Start Length Nullpos Nullbit Type 1 1 1 2 2 4 no zeros 3 6 81 varchar 4 87 81 varchar 5 168 3 1 1 no zeros 6 171 3 1 2 no zeros Explanations for the types of information myisamchk produces are given here. Nullpos, Nullbit ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-replication-conflict-resolution.html
Additional storage is required for tables using the NDB$EPOCH() and NDB$EPOCH_TRANS() functions; from 1 to 32 bits extra space per row is required, depending on the value passed to the function. This column should be defined as follows: ...
https://dev.mysql.com/doc/mysql-errors/8.4/en/server-error-reference.html
Error number: 3159; Symbol: ER_SECURE_TRANSPORT_REQUIRED; SQLSTATE: HY000 Message: Connections using insecure transport are prohibited while --require_secure_transport=ON. Error number: MY-010185; Symbol: ER_SERVERID_TOO_LARGE; SQLSTATE: HY000 ...