Search Results
https://dev.mysql.com/doc/refman/8.4/en/innodb-fulltext-index.html
A full-text index is defined as part of a CREATE TABLE statement or added to an existing table using ALTER TABLE or CREATE INDEX. When incoming documents are tokenized, the individual words (also referred to as “tokens”) are inserted into the ...
https://dev.mysql.com/doc/refman/8.4/en/create-table-secondary-indexes.html
Even with additional write costs, secondary indexes on virtual columns may be preferable to generated stored columns, which are materialized in the clustered index, resulting in larger tables that require more disk space and memory. row ...A ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-ndbinfo-server-operations.html
The server_operations table contains entries for all ongoing NDB operations that the current SQL node (MySQL Server) is currently involved in. It effectively is a subset of the cluster_operations table, in which operations for other SQL and API ...
https://dev.mysql.com/doc/heatwave/en/mys-hw-tpch-quickstart.html
The tpch Analytics Quickstart shows how to import data into the DB System using the MySQL Shell Parallel Table Import Utility, manually loading data into MySQL HeatWave Cluster, and running queries. This quickstart contains the following sections: ...We recommend that you always run the latest version of MySQL Shell, which is currently MySQL version ...
https://dev.mysql.com/doc/refman/8.4/en/getting-information.html
What if you forget the name of a database or table, or what the structure of a given table is (for example, what its columns are called)? MySQL addresses this problem through several statements that provide information about the databases and ...
https://dev.mysql.com/doc/refman/8.4/en/innodb-best-practices.html
Specify a primary key for every table using the most frequently queried column or columns, or an auto-increment value if there is no obvious primary key. Use joins wherever data is pulled from multiple tables based on identical ID values from those ...Adding foreign keys ensures that referenced columns are indexed, which can improve ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-ndbinfo-blobs.html
Parts of JSON values exceeding 4000 bytes in size are also stored in this table. The part and inline sizes of NDB blob columns can be set using CREATE TABLE and ALTER TABLE statements containing NDB table column comments (see NDB_COLUMN Options); ...
https://dev.mysql.com/doc/refman/8.4/en/optimizing-innodb-storage-layout.html
Once your data reaches a stable size, or a growing table has increased by tens or some hundreds of megabytes, consider using the OPTIMIZE TABLE statement to reorganize the table and compact any wasted space. The reorganized tables require less disk ...This is a straightforward technique that can improve performance when other techniques such as improving index usage or tuning application code are not ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-ndbinfo-server-locks.html
The server_locks table is similar in structure to the cluster_locks table, and provides a subset of the information found in the latter table, but which is specific to the SQL node (MySQL server) where it resides. (The cluster_locks table provides ...This may be useful for correlating locking patterns with specific MySQL user sessions, queries, or use ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-programs-ndb-select-all.html
ndb_select_all prints all rows from an NDB table to stdout. Usage ndb_select_all -c connection_string tbl_name -d db_name [> file_name] Options that can be used with ndb_select_all are shown in the following table. --database=dbname, -d dbname Name ...--connect-retries Command-Line Format --connect-retries=# Type Integer Default Value 12 Minimum Value 0 Maximum Value 12 Number of times to retry connection before giving ...