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https://dev.mysql.com/doc/c-api/8.4/en/mysql-fetch-row-nonblocking.html
The two functions differ as follows: mysql_fetch_row() returns a MYSQL_ROW value containing the next row, or NULL. The meaning of a NULL return depends on which function was called preceding mysql_fetch_row(): When used after mysql_store_result() or ... enum net_async_status mysql_fetch_row_nonblocking(MYSQL_RES *result, MYSQL_ROW *row) Description Note mysql_fetch_row_nonblocking() is an asynchronous ...
https://dev.mysql.com/doc/mysql-ai/9.4/en/mys-mysqlai-ml-model-active.html
If user is set to current or NULL, the following information displays. Use the ML_MODEL_ACTIVE routine to check which models are loaded and active for which users. All active users and models share the amount of memory defined by the shape, and it ...
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-column.html
Signature const void* getDefaultValue ( unsigned int* len = 0 ) const Parameters len holds either the length of the default value data, or 0 in the event that the column is nullable or has no default value. For example, if you retrieve the name ...
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/x-devapi-userguide/en/working-with-sql-result-sets.html
The data set can be empty if, for example, fetchOne() returns NULL or fetchAll() returns an empty list. When you execute an SQL operation on a Session using the sql() method, an SqlResult is returned. Iterating over an SqlResult is identical to ...
https://dev.mysql.com/doc/heatwave/en/mys-hw-comparison-functions-operators.html
Yes Check whether a value is within a range of values COALESCE() Yes Return the first non-NULL argument. = Yes Equal operator <=> NULL-safe equal to operator > Yes Greater than operator >= Yes Greater than or equal operator GREATEST() Yes Return the ...The VARLEN Support column identifies functions and operators that support variable-length encoded string ...
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 ...