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https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-programs-ndb-index-stat.html
--database=name, -d name Command-Line Format --database=name Type String Default Value [none] Minimum Value Maximum Value The name of the database that contains the table being queried. --query=# Command-Line Format --query=# Type Numeric Default ...
https://dev.mysql.com/doc/refman/8.0/en/precision-math-examples.html
This section provides some examples that show precision math query results in MySQL. These examples demonstrate the principles described in Section 14.24.3, “Expression Handling”, and Section 14.24.4, “Rounding Behavior”. Consider the ...
https://dev.mysql.com/doc/refman/8.0/en/charset-collation-implementations.html
MySQL implements several types of collations: Simple collations for 8-bit character sets This kind of collation is implemented using an array of 256 weights that defines a one-to-one mapping from character codes to weights. It is a case-insensitive ...
https://dev.mysql.com/doc/refman/8.0/en/correlated-subqueries.html
A correlated subquery is a subquery that contains a reference to a table that also appears in the outer query. For example: SELECT * FROM t1 WHERE column1 = ANY (SELECT column1 FROM t2 WHERE t2.column2 = t1.column2); Notice that the subquery ...
https://dev.mysql.com/doc/refman/8.0/en/create-table-ndb-comment-options.html
NDB_COLUMN Options NDB_TABLE Options It is possible to set a number of options specific to NDB Cluster in the table comment or column comments of an NDB table. Table-level options for controlling read from any replica and partition balance can be ...
https://dev.mysql.com/doc/refman/8.0/en/data-dictionary-usage-differences.html
As of MySQL 8.0, data dictionary tables are invisible and cannot be modified or queried directly. However, in most cases there are corresponding INFORMATION_SCHEMA tables that can be queried instead. INFORMATION_SCHEMA tables in MySQL 8.0 are ...
https://dev.mysql.com/doc/refman/8.0/en/explain.html
{EXPLAIN | DESCRIBE | DESC} tbl_name [col_name | wild] {EXPLAIN | DESCRIBE | DESC} [explain_type] {explainable_stmt | FOR CONNECTION connection_id} {EXPLAIN | DESCRIBE | DESC} ANALYZE [explain_type] select_stmt explain_type: { FORMAT = format_name ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-locking-reads.html
Other transactions can update or delete the same rows you just queried. All locks set by FOR SHARE and FOR UPDATE queries are released when the transaction is committed or rolled back. This behavior prevents transactions from updating or deleting ...
https://dev.mysql.com/doc/refman/8.0/en/internal-temporary-tables.html
Tables created for subquery or semijoin materialization (see Section 10.2.2, “Optimizing Subqueries, Derived Tables, View References, and Common Table Expressions”). For queries that use the SQL_SMALL_RESULT modifier, MySQL uses an in-memory ...
https://dev.mysql.com/doc/refman/8.0/en/load-xml.html
The tagname in the optional ROWS IDENTIFIED BY clause must also be given as a literal string, and must be surrounded by angle brackets (< and >). LOAD XML acts as the complement of running the mysql client in XML output mode (that is, starting the ...