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https://dev.mysql.com/range-optimization.html
The correct way to remove them is to replace them with TRUE, so that we do not miss any matching rows when doing the range scan. OR col_name = valN Each expression is true if col_name is equal to any of several values. For JSON output, ... The range ...
https://dev.mysql.com/server-system-variables.html
Boolean variables can be set at startup to the values ON, TRUE, OFF, and FALSE (not case sensitive), as well as 1 and 0. At startup, the server automatically generates RSA private/public key-pair files in the data directory if all of these ... The ...
https://dev.mysql.com/c-api-prepared-statement-data-structures.html
bool *is_null This member points to a bool variable that is true if a value is NULL, false if it is not NULL. For input, set *is_null to true to indicate that you are passing a NULL value as a statement parameter. Set that variable's value to true ... Prepared statements use several data structures: To obtain a statement handler, pass a MYSQL connection handler to mysql_stmt_init(), which returns a pointer to a MYSQL_STMT data ...
https://dev.mysql.com/comparison-operators.html
Whether a value is not within a range of values !=, <> Not equal operator NOT IN() Whether a value is not within a set of values NOT LIKE Negation of simple pattern matching STRCMP() Compare two strings Comparison operations result in a value of 1 ...Strings are automatically converted to numbers and numbers to strings as ...
https://dev.mysql.com/control-flow-functions.html
The second syntax returns the result for the first condition that is true. If no comparison or condition is true, the result after ELSE is returned, or NULL if there is no ELSE part. NULLIF(expr1,expr2) Returns NULL if expr1 = expr2 is true, ...Note ...
https://dev.mysql.com/mysql-cluster-programs-ndb-mgmd.html
Table 22.336 Command-line options for the ndb_mgmd program Format Description Added, Deprecated, or Removed --bind-address=host Local bind address All NDB 8.0 releases --config-cache[=TRUE|FALSE] Enable the management server configuration cache; ...
https://dev.mysql.com/mysql-cluster-programs-ndb-restore.html
--exclude-intermediate-sql-tables[=TRUE|FALSE] Property Value Command-Line Format --exclude-intermediate-sql-tables[=TRUE|FALSE] Type Boolean Default Value TRUE When performing copying ALTER TABLE operations, mysqld creates intermediate tables ...
https://dev.mysql.com/logical-operators.html
Table 12.4 Logical Operators Name Description AND, && Logical AND NOT, ! Negates value OR, || Logical OR XOR Logical XOR In SQL, all logical operators evaluate to TRUE, FALSE, or NULL (UNKNOWN). In MySQL, these are implemented as 1 (TRUE), 0 ...
https://dev.mysql.com/osx-installation-launchd.html
macOS uses launch daemons to automatically start, stop, and manage processes and applications such as MySQL. The md5 checksum of a file containing the above snippet is d925f05f6d1b6ee5ce5451b596d6baed. To enable the launchd service, you can either: ...
https://dev.mysql.com/mysql-nutshell.html
This is true for sorts performed entirely in memory as well as for sorts that require writing to and reading from disk. JSON_SCHEMA_VALID() returns TRUE (1) if the document validates against the schema and FALSE (0) if it does not. If they contain ... This section summarizes what has been added to, deprecated in, and removed from MySQL ...
Document created the 26/06/2006, last modified the 26/10/2018
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