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https://dev.mysql.com/doc/refman/8.0/en/innodb-deadlock-example.html
Client A enables innodb_print_all_deadlocks, creates two tables, 'Animals' and 'Birds', and inserts data into each. The following example illustrates how an error can occur when a lock request causes a deadlock. Thererfore, the previous read-only ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-information-schema-temp-table-info.html
It does not provide information about internal InnoDB temporary tables used by the optimizer. Create a simple InnoDB temporary table: mysql> CREATE TEMPORARY TABLE t1 (c1 INT PRIMARY KEY) ENGINE=INNODB; Query INNODB_TEMP_TABLE_INFO to view the ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-memcached-setup.html
Because the memcached daemon is tightly integrated with the MySQL server to avoid network traffic and minimize latency, you perform this process on each MySQL instance that uses this feature. Installing and Configuring the InnoDB memcached Plugin ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-page-compression.html
For example: CREATE TABLE t1 (c1 INT) COMPRESSION="zlib"; You can also enable page compression in an ALTER TABLE statement. The --block-size=1 option prints the allocated space in bytes instead of blocks, so that it can be compared to ls -l output.
https://dev.mysql.com/doc/refman/8.0/en/innodb-restrictions-limitations.html
You cannot create a table with a column name that matches the name of an internal InnoDB column (including DB_ROW_ID, DB_TRX_ID, and DB_ROLL_PTR. mysql> CREATE TABLE t1 (c1 INT, db_row_id INT) ENGINE=INNODB; ERROR 1166 (42000): Incorrect column name ... This section describes restrictions and limitations of the InnoDB storage ...
https://dev.mysql.com/doc/refman/8.0/en/insert.html
INSERT [LOW_PRIORITY | DELAYED | HIGH_PRIORITY] [IGNORE] [INTO] tbl_name [PARTITION (partition_name [, partition_name] ...)] [(col_name [, col_name] ...)] { {VALUES | VALUE} (value_list) [, (value_list)] ... For the reasons for this, see Section ...
https://dev.mysql.com/doc/refman/8.0/en/load-data.html
INTO Statement”.) To write data from a table to a file, use SELECT ... To read the file back into a table, use LOAD DATA. Unless REPLACE is also specified, LOCAL has the same effect as the IGNORE modifier on the interpretation of input file ...The ...
https://dev.mysql.com/doc/refman/8.0/en/local-variable-scope.html
Prepared statement scope is the current session, not the stored program, so the statement could be executed after the program ends, at which point the variables would no longer be in scope. INTO statement, contains a reference to a column and a ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-memory-per-fragment.html
A fixed size page has an internal header and a number of fixed-size slots, each of which can contain one row's fixed-size part. Ordered index fragments are T-tree structures which maintain a balanced tree containing row references in the order ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-operations-per-fragment.html
The syntax just shown for fully qualified object names is an internal interface which is subject to change in future releases. Generally, such a refusal is due to duplicate keys (inserts), Key not found errors (updates, deletes, and reads), or the ... The operations_per_fragment table provides information about the operations performed on individual fragments and fragment replicas, as well as about some of the results from these ...