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https://dev.mysql.com/doc/refman/8.4/en/performance-schema-functions.html
mysql> SELECT PS_CURRENT_THREAD_ID(); +------------------------+ | PS_CURRENT_THREAD_ID() | +------------------------+ | 52 | +------------------------+ mysql> SELECT PS_THREAD_ID(CONNECTION_ID()); +-------------------------------+ | ... MySQL ...
https://dev.mysql.com/doc/refman/8.4/en/performance-schema-quick-start.html
row *************************** Table: setup_consumers Create Table: CREATE TABLE `setup_consumers` ( `NAME` varchar(64) NOT NULL, `ENABLED` enum('YES','NO') NOT NULL, PRIMARY KEY (`NAME`) ) ENGINE=PERFORMANCE_SCHEMA DEFAULT CHARSET=utf8mb4 ... This ...
https://dev.mysql.com/doc/refman/8.4/en/regexp.html
If expr or pat is NULL, the return value is NULL. If expr or pat is NULL, the return value is NULL. If expr or pat is NULL, the return value is NULL. If expr, pat, or repl is NULL, the return value is NULL. If expr or pat is NULL, the return value ...This section discusses the functions and operators available for regular expression matching and illustrates, with examples, some of the special characters and constructs that can be used for regular expression ...
https://dev.mysql.com/doc/refman/8.4/en/show-columns.html
Collation The collation for nonbinary string columns, or NULL for other columns. The value is YES if NULL values can be stored in the column, NO if not. (A UNIQUE index permits multiple NULL values, but you can tell whether the column permits NULL ... SHOW [EXTENDED] [FULL] {COLUMNS | FIELDS} {FROM | IN} tbl_name [{FROM | IN} db_name] [LIKE 'pattern' | WHERE expr] SHOW COLUMNS displays information about the columns in a given ...
https://dev.mysql.com/doc/refman/8.4/en/show-processlist.html
row *************************** Id: 1 User: system user Host: db: NULL Command: Connect Time: 1030455 State: Waiting for source to send event Info: NULL *************************** 2. row *************************** Id: 2 User: system user Host: db: ... SHOW [FULL] PROCESSLIST Important The INFORMATION SCHEMA implementation of SHOW PROCESSLIST is deprecated and subject to removal in a future MySQL ...
https://dev.mysql.com/doc/mysql-ai/9.4/en/mys-mysqlai-chat.html
Default value is NULL report_progress: specifies whether information such as routine progress detail is to be reported. The HEATWAVE_CHAT routine automatically calls the ML_RAG routine which loads an LLM and runs a semantic search on the available ...
https://dev.mysql.com/doc/connectors/en/connector-j-usagenotes-troubleshooting.html
} } if (stmt != null) { try { stmt.close(); } catch (SQLException sqlEx) { // You'd probably want to log this as well... This section explains the symptoms and resolutions for the most commonly encountered issues with applications using MySQL ...
https://dev.mysql.com/doc/ndbapi/en/ndb-ndbblob.html
NdbBlob Class Overview NdbBlob::ActiveHook NdbBlob::blobsFirstBlob() NdbBlob::blobsNextBlob() NdbBlob::close() NdbBlob::getBlobEventName() NdbBlob::getBlobTableName() NdbBlob::getColumn() NdbBlob::getLength() NdbBlob::getNull() ... This section ...
https://dev.mysql.com/doc/ndbapi/en/ndb-start-mysql-data-types.html
-- Attributes -- c1 Datetime NULL AT=FIXED ST=MEMORY c2 Date NULL AT=FIXED ST=MEMORY c3 Time NULL AT=FIXED ST=MEMORY c4 Timestamp NOT NULL AT=FIXED ST=MEMORY DEFAULT 0 c5 Year NULL AT=FIXED ST=MEMORY The affected MySQL types are TIME, DATETIME, and ... This section provides information about the way in which MySQL data types are represented in NDBCLUSTER table columns and how these values can be accessed in NDB API ...
https://dev.mysql.com/doc/x-devapi-userguide/en/collection-modify.html
The modify(SearchConditionStr) function is for modifying documents in a collection, similar to an UPDATE statement for an SQL database. It takes a search condition string (SearchConditionStr) as a parameter to specify the documents that are to be ...