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Rechercher dans le manuel MySQL
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https://dev.mysql.com/mysql-options4.html
MYSQL_OPT_CONNECT_ATTR_ADD (argument types: char *, char *) This option adds an attribute key-value pair to the current set of connection attributes to pass to the server at connect time. int mysql_options4(MYSQL *mysql, enum mysql_option option, ...
https://dev.mysql.com/mysql-server-init.html
int mysql_server_init(int argc, char **argv, char **groups) This function initializes the MySQL client library, which must be done before you call any other MySQL function. Note To avoid memory leaks after the application is done using the library ...
https://dev.mysql.com/partitioning-columns-range.html
Each value list used to define a partition contains 3 values in the same order; that is, each value list tuple has the form (INT, INT, CHAR(3)), which corresponds to the data types used by columns a, d, and c (in that order). In addition, changing ... Range columns partitioning is similar to range partitioning, but enables you to define partitions using ranges based on multiple column ...
https://dev.mysql.com/partitioning-key.html
For example, the following CREATE TABLE statement is valid: CREATE TABLE tm1 ( s1 CHAR(32) PRIMARY KEY ) PARTITION BY KEY(s1) PARTITIONS 10; The preceding statement would not be valid, were a different partitioning type to be specified.
https://dev.mysql.com/partitioning-limitations.html
This means that the speed of these operations is affected by such factors as file system type and characteristics, disk speed, swap space, file handling efficiency of the operating system, and MySQL server options and variables that relate to file ... This section discusses current restrictions and limitations on MySQL partitioning ...
https://dev.mysql.com/scalar-subqueries.html
A scalar subquery is a simple operand, and you can use it almost anywhere a single column value or literal is legal, and you can expect it to have those characteristics that all operands have: a data type, a length, an indication that it can be ...
https://dev.mysql.com/show-create-procedure.html
row *************************** Procedure: simpleproc sql_mode: ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES, NO_ZERO_IN_DATE,NO_ZERO_DATE, ERROR_FOR_DIVISION_BY_ZERO, NO_ENGINE_SUBSTITUTION Create Procedure: CREATE PROCEDURE `simpleproc`(OUT param1 INT) ... SHOW CREATE PROCEDURE proc_name This statement is a MySQL ...
https://dev.mysql.com/show-warnings.html
mysql> CREATE TABLE t1 (a TINYINT NOT NULL, b CHAR(4)); Query OK, 0 rows affected (0.05 sec) mysql> INSERT INTO t1 VALUES(10,'mysql'), (NULL,'test'), (300,'xyz'); Query OK, 3 rows affected, 3 warnings (0.00 sec) Records: 3 Duplicates: 0 Warnings: 3 ... SHOW WARNINGS [LIMIT [offset,] row_count] SHOW COUNT(*) WARNINGS SHOW WARNINGS is a diagnostic statement that displays information about the conditions (errors, warnings, and notes) resulting from executing a statement in the current ...
https://dev.mysql.com/stored-programs-defining.html
This statement may be a compound statement made up of several statements separated by semicolon (;) characters. You should avoid the use of the backslash (\) character because that is the escape character for MySQL. Each stored program contains a ...
https://dev.mysql.com/type-conversion.html
mysql> SELECT 38.8, CAST(38.8 AS CHAR); -> 38.8, '38.8' mysql> SELECT 38.8, CONCAT(38.8); -> 38.8, '38.8' See later in this section for information about the character set of implicit number-to-string conversions, and for modified rules that apply ... When an operator is used with operands of different types, type conversion occurs to make the operands ...
Document created the 26/06/2006, last modified the 26/10/2018
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