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https://dev.mysql.com/doc/extending-mysql/8.4/en/client-plugin-descriptors.html
desc: A string that provides a general description of the plugin. init: A once-only initialization function, or NULL if there is no such function. Any message returned by the init function must be null-terminated, so the maximum message length is ...
https://dev.mysql.com/doc/c-api/8.4/en/mysql-options.html
The argument is a pointer to a null-terminated string naming the key. The argument is a host name or IP address (specified as a string). Interpretation of the MYSQL_OPT_LOAD_DATA_LOCAL_DIR value is as follows: If the value is the null pointer (the ... int mysql_options(MYSQL *mysql, enum mysql_option option, const void *arg) Description Can be used to set extra connect options and affect behavior for a ...
https://dev.mysql.com/doc/ndbapi/en/ndb-column.html
For example, if you retrieve the name “myColumn” for a given column, attempting to access this column using “Mycolumn” for the name fails with an error such as Column is NULL or Table definition has undefined column. Signature const void* ...
https://dev.mysql.com/doc/heatwave/en/mys-hw-comparison-functions-operators.html
The VARLEN Support column identifies functions and operators that support variable-length encoded string columns. Yes Check whether a value is within a range of values COALESCE() Yes Return the first non-NULL argument. = Yes Equal operator <=> ...
https://dev.mysql.com/doc/refman/8.4/en/information-schema-introduction.html
MySQL uses the default collation for this character set (utf8mb3_general_ci) for all searches, sorts, comparisons, and other string operations on such columns. Because some MySQL objects are represented as files, searches in INFORMATION_SCHEMA ...
https://dev.mysql.com/doc/internals/en/optimizer-eliminating-dead-code.html
If a column cannot be NULL, the optimizer removes any non-relevant IS NULL conditions. Thus, WHERE not_null_column IS NULL is an always-false situation, and WHERE not_null_column IS NOT NULL is an always-true situation — so such columns are also ... A transformation takes place for conditions that are always true, for example: WHERE 0=0 AND column1='y' In this case, the first condition is removed, leaving WHERE column1='y' See: /sql/sql_select.cc, ...
https://dev.mysql.com/doc/ndbapi/en/mccj-using-clusterj-tables.html
ClusterJ's main purpose is to read, write, and update row data in an existing database, rather than to perform DDL. You can create the employee table that matches this interface, using the following CREATE TABLE statement, in a MySQL client ...
https://dev.mysql.com/doc/ndbapi/en/ndb-examples-event-handling.html
The source code for this program may be found in the NDB Cluster source tree, in the file storage/ndb/ndbapi-examples/ndbapi_event/ndbapi_event.cpp. #include <NdbApi.hpp> // Used for cout #include <stdio.h> #include <iostream> #include <unistd.h> ...
https://dev.mysql.com/doc/ndbapi/en/ndb-ndbrecattr.html
NdbRecAttr Class Overview ~NdbRecAttr() NdbRecAttr::aRef() NdbRecAttr::char_value() NdbRecAttr::clone() NdbRecAttr::double_value() NdbRecAttr::float_value() NdbRecAttr::get_size_in_bytes() NdbRecAttr::getColumn() NdbRecAttr::getType() ...An ...
https://dev.mysql.com/doc/heatwave/en/mys-hwaml-model-sharing.html
For example: mysql> CALL sys.ML_MODEL_IMPORT(NULL, JSON_OBJECT('schema', 'ML_SCHEMA_admin', 'table', 'model_export'), @bank_export); NULL means that a model from a table is imported, and not a model object. mysql> CALL ... This topic describes how ...