https://dev.mysql.com/cast-functions.html
If 25 <= P <= 53, the result is of type REAL. This is actually FLOAT if REAL_AS_FLOAT SQL mode is enabled; otherwise the result is of type DOUBLE. Table 12.14 Cast Functions and Operators Name Description BINARY Cast a string to a binary string ...
https://dev.mysql.com/numeric-type-overview.html
DOUBLE PRECISION[(M,D)] [UNSIGNED] [ZEROFILL], REAL[(M,D)] [UNSIGNED] [ZEROFILL] These types are synonyms for DOUBLE. Exception: If the REAL_AS_FLOAT SQL mode is enabled, REAL is a synonym for FLOAT rather than DOUBLE. For additional information ...
https://dev.mysql.com/numeric-types.html
These types include the exact numeric data types (INTEGER, SMALLINT, DECIMAL, and NUMERIC), as well as the approximate numeric data types (FLOAT, REAL, and DOUBLE PRECISION). MySQL also treats REAL as a synonym for DOUBLE PRECISION (a nonstandard ...
https://dev.mysql.com/charset-general.html
In real life, most character sets have many characters: not just A and B but whole alphabets, sometimes multiple alphabets or eastern writing systems with thousands of characters, along with many special symbols and punctuation marks. A character ...
https://dev.mysql.com/adding-udf.html
SQL Type C/C++ Type STRING char * INTEGER long long REAL double It is also possible to declare a DECIMAL function, but currently the value is returned as a string, so you should write the UDF as though it were a STRING function. To specify (for REAL ... For the UDF mechanism to work, functions must be written in C or C++ and your operating system must support dynamic ...
https://dev.mysql.com/bug-reports.html
If the information is really top secret and you do not want to show it even to us, go ahead and provide an example using other names, but please regard this as the last choice. Even the MySQL team cannot guess such things without first using a ...
https://dev.mysql.com/mysql-stmt-fetch.html
Invoke mysql_stmt_fetch() with a zero-length buffer for the column in question and a pointer in which the real length can be stored. real_length= 0; bind[0].buffer= 0; bind[0].buffer_length= 0; bind[0].length= &real_length ... int ...
https://dev.mysql.com/udf-compiling.html
Files implementing UDFs must be compiled and installed on the host where the server runs. This process is described here for the example UDF file sql/udf_example.cc that is included in MySQL source distributions. For additional information about ...
https://dev.mysql.com/innodb-compression-tuning.html
When you are ready to conduct long-term testing and put compressed tables into production, see Section 15.9.1.4, “Monitoring InnoDB Table Compression at Runtime” for ways to verify the effectiveness of those choices under real-world conditions.
https://dev.mysql.com/socket-instances-table.html
The socket_instances table provides a real-time snapshot of the active connections to the MySQL server. Information available in this table provides a real-time snapshot of the active connections to the server. The table contains one row per TCP/IP ...
