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https://dev.mysql.com/doc/refman/8.4/en/performance-schema-optimization.html
row *************************** Table: accounts Non_unique: 0 Key_name: ACCOUNT Seq_in_index: 1 Column_name: USER Collation: NULL Cardinality: NULL Sub_part: NULL Packed: NULL Null: YES Index_type: HASH Comment: Index_comment: Visible: YES ...
https://dev.mysql.com/doc/refman/8.4/en/encrypted-connection-protocols-ciphers.html
If this variable is not set, its default value is NULL, which means that the server permits the default set of ciphersuites. MySQL supports multiple TLS protocols and ciphers, and enables configuring which protocols and ciphers to permit for ...
https://dev.mysql.com/doc/ndbapi/en/ndb-error-codes-application-error.html
The following list enumerates all NDB errors of type AE (Application error). Having a table without primary key uses an autoincremented hidden key, i.e. NDB error code 5002 MySQL error DMEC Error message The process has wrong type. NDB error code ...
https://dev.mysql.com/doc/refman/8.4/en/engine-condition-pushdown-optimization.html
column IS [NOT] NULL column IN (value_list) Each item in the value_list must be a constant, literal value. row *************************** id: 1 select_type: SIMPLE table: x partitions: p0,p1 type: ALL possible_keys: NULL key: NULL key_len: NULL ...
https://dev.mysql.com/doc/refman/8.4/en/show-index.html
row *************************** Table: city Non_unique: 0 Key_name: PRIMARY Seq_in_index: 1 Column_name: ID Collation: A Cardinality: 4188 Sub_part: NULL Packed: NULL Null: Index_type: BTREE Comment: Index_comment: Visible: YES Expression: NULL ...
https://dev.mysql.com/doc/refman/8.4/en/gis-class-geometry.html
Exterior, interior, and boundary of an empty geometry are not defined (that is, they are represented by a NULL value). It is a noninstantiable class but has a number of properties, described in the following list, that are common to all geometry ...
https://dev.mysql.com/doc/heatwave/en/mys-hwaml-ml-model-import.html
The table to import should have the following columns, and their recommended parameters: chunk_id: INT AUTO_INCREMENT PRIMARY KEY model_object: LONGTEXT NOT NULL model_metadata: JSON DEFAULT NULL See Model Metadata. Use the ML_MODEL_IMPORT routine ...
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/spatial-operator-functions.html
See that section for descriptions of these functions: ST_Envelope(g) ST_StartPoint(ls) ST_EndPoint(ls) ST_PointN(ls, N) ST_ExteriorRing(poly) ST_InteriorRingN(poly, N) ST_GeometryN(gc, N) Unless otherwise specified, functions in this section handle ... OpenGIS proposes a number of functions that can produce ...
https://dev.mysql.com/doc/connectors/en/connector-j-usagenotes-last-insert-id.html
getGeneratedKeys() is the preferred method to use if you need to retrieve AUTO_INCREMENT keys and through JDBC; this is illustrated in the first example below. The second example shows how you can retrieve the same value using a standard SELECT ...