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https://dev.mysql.com/group-by-functions.html
The SUM() and AVG() functions return a DECIMAL value for exact-value arguments (integer or DECIMAL), and a DOUBLE value for approximate-value arguments (FLOAT or DOUBLE). Prior to MySQL 8.0, bit functions and operators required BIGINT (64-bit ...
https://dev.mysql.com/mysql-cluster-ndbinfo-cluster-locks.html
The cluster_locks table provides information about current lock requests holding and waiting for locks on NDB tables in an NDB Cluster, and is intended as a companion table to cluster_operations. Information obtain from the cluster_locks table may ...
https://dev.mysql.com/mysql-cluster-ndbinfo-diskpagebuffer.html
Table 22.394 Columns of the diskpagebuffer table Column Name Type Description node_id integer The data node ID block_instance integer Block instance pages_written integer Number of pages written to disk. The diskpagebuffer table provides statistics ...
https://dev.mysql.com/mysql-cluster-ndbinfo-membership.html
The membership table describes the view that each data node has of all the others in the cluster, including node group membership, president node, arbitrator, arbitrator successor, arbitrator connection states, and other information. The following ...
https://dev.mysql.com/mysql-cluster-ndbinfo-server-transactions.html
The server_transactions table is subset of the cluster_transactions table, but includes only those transactions in which the current SQL node (MySQL Server) is a participant, while including the relevant connection IDs. The following table provides ...
https://dev.mysql.com/server-options.html
--debug-sync-timeout[=N] Property Value Command-Line Format --debug-sync-timeout[=#] Type Integer Controls whether the Debug Sync facility for testing and debugging is enabled. --exit-info[=flags], -T [flags] Property Value Command-Line Format ...
https://dev.mysql.com/arithmetic-functions.html
Table 12.11 Arithmetic Operators Name Description DIV Integer division / Division operator - Minus operator %, MOD Modulo operator + Addition operator * Multiplication operator - Change the sign of the argument The usual arithmetic operators are ...
https://dev.mysql.com/control-flow-functions.html
Otherwise, the result is an integer type (with one exception): If all integer types are all signed or all unsigned, the result is the same sign and the precision is the highest of all specified integer types (that is, TINYINT, SMALLINT, MEDIUMINT, ...The second syntax returns the result for the first condition that is ...
https://dev.mysql.com/json.html
Cells in arrays are represented by [N], where N is a non-negative integer. BLOB BIT OPAQUE DATETIME TIME DATE BOOLEAN ARRAY OBJECT STRING INTEGER, DOUBLE NULL For JSON values of the same precedence, the comparison rules are type specific: BLOB The ...The JSON data type provides these advantages over storing JSON-format strings in a string column: Automatic validation of JSON documents stored in JSON ...
https://dev.mysql.com/mysql-cluster-api-definition.html
LocationDomainId takes an integer value between 0 and 16 inclusive, with 0 being the default; using 0 is the same as leaving the parameter unset. The [mysqld] and [api] sections in the config.ini file define the behavior of the MySQL servers (SQL ...
Document created the 26/06/2006, last modified the 26/10/2018
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