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https://dev.mysql.com/doc/heatwave/en/mys-hw-reload-tables.html
mysql> CALL sys.HEATWAVE_RELOAD(options); options: {JSON_OBJECT(keyvalue[, keyvalue]...)|NULL} keyvalue: { "only_user_loaded_tables",{true|false} |"output",{"normal"|"silent"} } Use key-value pairs in JSON format to specify options. Produces ...
https://dev.mysql.com/doc/refman/9.7/en/dynamic-format.html
Dynamic storage format is used if a MyISAM table contains any variable-length columns (VARCHAR, VARBINARY, BLOB, or TEXT), or if the table was created with the ROW_FORMAT=DYNAMIC table option. You can use OPTIMIZE TABLE or myisamchk -r to ...
https://dev.mysql.com/doc/refman/9.7/en/innodb-file-defragmenting.html
One symptom of fragmentation is that a table takes more space than it “should” take. Another symptom of fragmentation is that a table scan such as this takes more time than it “should” take: SELECT COUNT(*) FROM t WHERE non_indexed_column <> ... Random insertions into or deletions from a secondary index can cause the index to become ...
https://dev.mysql.com/doc/refman/9.7/en/mysql-cluster-ndbinfo-transporters.html
Notes For each running data node in the cluster, the transporters table displays a row showing the status of each of that node's connections with all nodes in the cluster, including itself. This information is shown in the table's status column, ...
https://dev.mysql.com/doc/heatwave/en/mys-hw-lakehouse-limitations-delta.html
MySQL HeatWave Lakehouse has the following limitations for delta lake tables. Loading delta lake tables is only supported in MySQL HeatWave on OCI. Support for delta lake tables is restricted to delta tables with features enabled by default by a ...
https://dev.mysql.com/doc/heatwave/en/mys-hw-secondary-load.html
You can load tables into HeatWave using the SECONDARY_LOAD clause. Loading Tables Statement To load a table into MySQL HeatWave, specify the SECONDARY_LOAD clause in an ALTER TABLE statement and use the following syntax. ALTER TABLE table_name ...
https://dev.mysql.com/doc/refman/9.7/en/static-format.html
It is used when the table contains no variable-length columns (VARCHAR, VARBINARY, BLOB, or TEXT). Also, when scanning a table, it is very easy to read a constant number of rows with each disk read operation. MyISAM table indexes can always be ...Of ...
https://dev.mysql.com/doc/refman/9.7/en/reproducible-test-case.html
For information about steps to take when encountering InnoDB table corruption, see Section 1.6, “How to Report Bugs or Problems”. If you encounter corrupted MyISAM tables or if mysqld always fails after some update statements, you can test ...
https://dev.mysql.com/doc/refman/9.7/en/sys-innodb-buffer-stats-by-table.html
These views summarize the information in the INFORMATION_SCHEMA INNODB_BUFFER_PAGE table, grouped by schema and table. Warning Querying views that access the INNODB_BUFFER_PAGE table can affect performance. Do not query these views on a production ...To avoid impacting performance on a production system, reproduce the issue you want to investigate and query buffer pool statistics on a test ...
https://dev.mysql.com/doc/refman/9.7/en/mysql-cluster-ndbinfo-server-transactions.html
The server_transactions table is subset of the cluster_transactions table, but includes only those transactions in which the current SQL node (MySQL Server) is a participant, while including the relevant connection IDs. Together with the block ...