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https://dev.mysql.com/doc/refman/8.4/en/information-schema-routines-table.html
If the routine is a stored procedure, this value is NULL. If the routine is a stored procedure, this value is NULL. If the routine is a stored procedure, this value is NULL. If the routine is a stored procedure, this value is NULL. If the routine is ... The ROUTINES table provides information about stored routines (stored procedures and stored ...
https://dev.mysql.com/doc/refman/8.4/en/innodb-online-ddl-operations.html
ALGORITHM=INPLACE is not permitted under certain conditions if columns have to be converted to NOT NULL. For a PRIMARY KEY index, MySQL also checks that none of the PRIMARY KEY columns contains a NULL. When you add a primary key using the ... Online ...
https://dev.mysql.com/doc/internals/en/com-query-response.html
NULL is sent as 0xfb everything else is converted into a string and is sent as Protocol::LengthEncodedString. Image description If it is not a valid Protocol::LengthEncodedInteger it is either a ERR_Packet or a Protocol::LOCAL_INFILE_Request. Image ...
https://dev.mysql.com/doc/ndbapi/en/ndb-examples-blobs-ndbrecord.html
*/ char buffer[10000]; NdbTransaction *myTrans= myNdb->startTransaction(); if (myTrans == NULL) APIERROR(myNdb->getNdbError()); NdbScanOperation *myScanOp= myTrans->scanTable(blob_record, NdbOperation::LM_Exclusive); if (myScanOp == NULL) ... This ...
https://dev.mysql.com/doc/refman/8.4/en/logical-operators.html
Table 14.5 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/doc/refman/8.4/en/firewall-reference.html
The value is NULL, or a non-NULL account that has the format user_name@host_name: If the value is NULL, the firewall records allowlist rules for statements received from any account that is a member of the group. If the value is non-NULL, the ...
https://dev.mysql.com/doc/refman/8.4/en/json-attribute-functions.html
Returns NULL if any argument is NULL or the path argument does not identify a value in the document. The functions in this section return attributes of JSON values. An error occurs if the argument is not a valid JSON document. An empty array, empty ...
https://dev.mysql.com/doc/refman/8.4/en/macos-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/doc/refman/8.4/en/firewall-usage.html
To clear the training account if it actually is desired to enable all group members to perform training in RECORDING mode, call sp_set_firewall_group_mode_and_user() and pass a NULL value for the account argument: CALL ... Before using MySQL ...
https://dev.mysql.com/doc/heatwave/en/mys-hw-lakehouse-table-syntax-json.html
External tables use table-level and column-level ENGINE_ATTRIBUTE options of the CREATE TABLE statement to specify the parameters needed to process data stored externally in Object Storage. CREATE EXTERNAL TABLE table_name (col_name data_type ...