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https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-dictionary-columns.html
The table provides NDB dictionary information about columns of NDB tables.
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-index-columns.html
This table provides information about indexes on NDB tables. The columns of the index_columns table are listed here, along with brief descriptions: table_id Unique ID of the NDB table for which the index is defined Name of the database containing ...
https://dev.mysql.com/doc/refman/8.0/en/sys-statements-with-full-table-scans.html
These views display normalized statements that have done full table scans. The statements_with_full_table_scans and x$statements_with_full_table_scans views have these columns: query The normalized statement string. no_index_used_count The total ...
https://dev.mysql.com/doc/refman/8.0/en/csv-storage-engine.html
When you create a CSV table, the server creates a plain text data file having a name that begins with the table name and has a .CSV extension. When you store data into the table, the storage engine saves it into the data file in comma-separated ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-params-ndbd.html
PartitionsPerNode: Determines the number of table partitions created on each data node; not used if ClassicFragmentation is enabled. DefaultHashMapSize: Set size (in buckets) to use for table hash maps. DiskDataUsingSameDisk: Set to false if Disk ...
https://dev.mysql.com/doc/refman/8.0/en/show-profile.html
Note The SHOW PROFILE and SHOW PROFILES statements are deprecated; expect them to be removed in a future MySQL release. Use the Performance Schema instead; see Section 29.19.1, “Query Profiling Using Performance Schema”. To control profiling, ...
https://dev.mysql.com/doc/refman/8.0/en/myisamchk-repair-options.html
--correct-checksum Command-Line Format --correct-checksum Correct the checksum information for the table. --data-file-length=len, -D len Command-Line Format --data-file-length=len Type Numeric The maximum length of the data file (when re-creating ...
https://dev.mysql.com/doc/refman/8.0/en/subquery-optimization-with-exists.html
row *************************** id: 2 select_type: DEPENDENT SUBQUERY table: t2 type: ref_or_null possible_keys: maybe_null_key key: maybe_null_key key_len: 5 ref: func rows: 2 Extra: Using where; Using index ... AND trigcond(oe_N=ie_N) ) Each ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-status-monitoring.html
When the server cannot create a mutex instrument, these results occur: No row for the instrument is inserted into the setup_instruments table. Performance_schema_xxx_instances_lost indicates how many instances of object type xxx could not be created. If the server cannot create a given instrumented mutex instance, it increments ...Names for these variables have several forms: ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-programs-ndb-move-data.html
Usage The program is invoked with the names of the source and target tables; either or both of these may be qualified optionally with the database name. ndb_move_data options source target Options that can be used with ndb_move_data are shown in the ...--connect-retry-delay Command-Line Format --connect-retry-delay=# Type Integer Default Value 5 Minimum Value 0 Maximum Value 5 Number of seconds to wait between attempts to contact management ...