Search Results
https://dev.mysql.com/doc/refman/8.4/en/compilation-problems.html
Normally, the build process does not need to create sql_yacc.cc because MySQL comes with a pregenerated copy. However, if you do need to re-create it, you might encounter this error: "sql_yacc.yy", line xxx fatal: default action causes potential...
https://dev.mysql.com/doc/refman/8.4/en/concurrent-inserts.html
If you are using the binary log, concurrent inserts are converted to normal inserts for CREATE ... This is done to ensure that you can re-create an exact copy of your tables by applying the log during a backup operation. If there are multiple INSERT ...
https://dev.mysql.com/doc/refman/8.4/en/constant-folding-optimization.html
Consider the table created by the following statement: CREATE TABLE t (c TINYINT UNSIGNED NOT NULL); The WHERE condition in the query SELECT * FROM t WHERE c < 256 contains the integral constant 256 which is out of range for a TINYINT UNSIGNED ...
https://dev.mysql.com/doc/refman/8.4/en/date-and-time-functions.html
This section describes the functions that can be used to manipulate temporal values. See Section 13.2, “Date and Time Data Types”, for a description of the range of values each date and time type has and the valid formats in which values may be ...
https://dev.mysql.com/doc/refman/8.4/en/date-and-time-literals.html
Standard SQL and ODBC Date and Time Literals String and Numeric Literals in Date and Time Context Date and time values can be represented in several formats, such as quoted strings or as numbers, depending on the exact type of the value and other ...
https://dev.mysql.com/doc/refman/8.4/en/dbug-package.html
The MySQL server and most MySQL clients are compiled with the DBUG package originally created by Fred Fish. When you have configured MySQL for debugging, this package makes it possible to get a trace file of what the program is doing. This section ...
https://dev.mysql.com/doc/refman/8.4/en/declare-local-variable.html
type [DEFAULT value] This statement declares local variables within stored programs. To provide a default value for a variable, include a DEFAULT clause. The value can be specified as an expression; it need not be a constant. If the DEFAULT clause ...
https://dev.mysql.com/doc/refman/8.4/en/descending-indexes.html
MySQL supports descending indexes: DESC in an index definition is no longer ignored but causes storage of key values in descending order. Previously, indexes could be scanned in reverse order but at a performance penalty. A descending index can be ...
https://dev.mysql.com/doc/refman/8.4/en/document-store-concepts.html
CRUD Operations The four basic operations that can be issued against a collection are Create, Read, Update and Delete (CRUD). In terms of MySQL this means: Create a new document (insertion or addition) Read one or more documents (queries) Update one ... This section explains the concepts introduced as part of using MySQL as a document ...
https://dev.mysql.com/doc/refman/8.4/en/drop-logfile-group.html
(For information on creating log file groups, see Section 15.1.16, “CREATE LOGFILE GROUP Statement”.) Important Before dropping a log file group, you must drop all tablespaces that use that log file group for UNDO logging. DROP LOGFILE GROUP ...