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https://dev.mysql.com/doc/refman/9.7/en/sys-ps-thread-account.html
Parameters in_thread_id BIGINT UNSIGNED: The thread ID for which to return the account. Given a Performance Schema thread ID, returns the user_name@host_name account associated with the thread. The value should match the THREAD_ID column from some ...
https://dev.mysql.com/doc/refman/9.7/en/charset-introducer.html
A character string literal, hexadecimal literal, or bit-value literal may have an optional character set introducer and COLLATE clause, to designate it as a string that uses a particular character set and collation: [_charset_name] literal [COLLATE ...
https://dev.mysql.com/doc/refman/9.7/en/sys-ps-thread-stack.html
Returns a JSON formatted stack of all statements, stages, and events within the Performance Schema for a given thread ID. The value should match the THREAD_ID column from some Performance Schema threads table row. row *************************** ...
https://dev.mysql.com/doc/refman/9.7/en/sys-ps-thread-trx-info.html
Parameters in_thread_id BIGINT UNSIGNED: The thread ID for which to return transaction information. Returns a JSON object containing information about a given thread. The information includes the current transaction, and the statements it has ...
https://dev.mysql.com/doc/refman/9.7/en/bit-value-literals.html
A leading 0b is case-sensitive and cannot be written as 0B. In numeric contexts, MySQL treats a bit literal like an integer. To ensure numeric treatment of a bit literal, use it in numeric context. For example, a bit literal assigned to a ...
https://dev.mysql.com/doc/refman/9.7/en/aggregate-functions.html
This section describes aggregate functions that operate on sets of values. They are often used with a GROUP BY clause to group values into subsets. If you use an aggregate function in a statement containing no GROUP BY clause, it is equivalent to ...
https://dev.mysql.com/doc/refman/9.7/en/innodb-online-ddl-operations.html
Changing the column data type ALTER TABLE tbl_name CHANGE c1 c1 BIGINT, ALGORITHM=COPY; Changing the column data type is only supported with ALGORITHM=COPY. Online support details, syntax examples, and usage notes for DDL operations are provided ...
https://dev.mysql.com/doc/refman/9.7/en/mysql-cluster-ndbinfo-memory-per-fragment.html
memory_per_fragment Table: Notes memory_per_fragment Table: Examples The memory_per_fragment table provides information about the usage of memory by individual fragments. See the Notes later in this section to see how you can use this to find out ...
https://dev.mysql.com/doc/refman/9.7/en/mysql-cluster-ndbinfo-nodes.html
This table contains information on the status of data nodes. For each data node that is running in the cluster, a corresponding row in this table provides the node's node ID, status, and uptime. For nodes that are starting, it also shows the ...
https://dev.mysql.com/doc/refman/9.7/en/load-data.html
For TINYINT, SMALLINT, MEDIUMINT, INT, and BIGINT, the field widths are 4, 6, 8, 11, and 20, respectively, no matter what the declared display width is. The file can be read from the server host or the client host, depending on whether the LOCAL ...