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Search Results
https://dev.mysql.com/doc/refman/8.0/en/myisamchk.html
This enables you to specify all tables in a directory by using the pattern *.MYI. You should then ensure that no one is using the tables while you are running myisamchk However, the easiest way to avoid this problem is to use CHECK TABLE instead of ... The myisamchk utility gets information about your database tables or checks, repairs, or optimizes ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-install-example-data.html
The easiest way to accomplish this is to do a search-and-replace on the file that contains the definitions and replace all instances of TYPE=engine_name or ENGINE=engine_name with ENGINE=NDBCLUSTER. Note The information in this section applies to ...Working with database tables and data in NDB Cluster is not much different from doing so in standard ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-indexes.html
For example, if you have a three-column index on (col1, col2, col3), you have indexed search capabilities on (col1), (col1, col2), and (col1, col2, col3). In this context, VARCHAR and CHAR are considered the same if they are declared as the same ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-shell-tutorial-javascript-collections-add.html
In this example we are using the world_x schema imported previously, and the countryinfo collection. As this is multi-line content, press Enter twice to insert the document. A MySQL server at an earlier 8.0 release or at 5.7 does not set an _id ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-shell-tutorial-javascript-documents-in-tables.html
Examples in this section use the city table in the world_x schema. mysql-js> db.city.insert().values( None, "San Francisco", "USA", "California", '{"Population":830000}') Select a Record You can issue a query with a search condition that evaluates ... In MySQL, a table may contain traditional relational data, JSON values, or ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-shell-tutorial-python-documents-add.html
In this example we are using the world_x schema imported previously, and the countryinfo collection. As this is multi-line content, press Enter twice to insert the document. A MySQL server at an earlier 8.0 release or at 5.7 does not set an _id ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-shell-tutorial-python-documents-in-tables.html
Examples in this section use the city table in the world_x schema. mysql-py> db.city.insert().values( None, "San Francisco", "USA", "California", '{"Population":830000}') Select a Record You can issue a query with a search condition that evaluates ... In MySQL, a table may contain traditional relational data, JSON values, or ...
https://dev.mysql.com/doc/refman/8.0/en/optimizer-hints.html
This occurs due to heuristic pruning during greedy search, which can be avoided by setting optimizer_prune_level=0. Changes to this variable affect execution of all subsequent queries; to affect one query differently from another, it is necessary to ... One means of control over optimizer strategies is to set the optimizer_switch system variable (see Section 10.9.2, “Switchable ...
https://dev.mysql.com/doc/refman/8.0/en/outer-join-optimization.html
MySQL implements an A LEFT JOIN B join_specification as follows: Table B is set to depend on table A and all tables on which A depends. Table A is set to depend on all tables (except B) that are used in the LEFT JOIN condition. The LEFT JOIN ...
https://dev.mysql.com/doc/refman/8.0/en/partitioning-info.html
row *************************** id: 1 select_type: SIMPLE table: trb1 partitions: p0,p1,p2,p3 type: ALL possible_keys: NULL key: NULL key_len: NULL ref: NULL rows: 10 Extra: Using filesort In this case, all four partitions are searched. This ...