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There are some sql_mode values in MySQL:
ANSI,
IGNORE_SPACE,
STRICT_TRANS_TABLES, etc
How can I see the one particular value? The manual says:
You can retrieve the current mode by issuing a SELECT @@sql_mode statement.
But it just shows nothing, just one blank field in a table with @@sql_mode as a column name.
592
To set the SQL mode at server startup, use the --sql-mode=" modes " option on the command line, or sql-mode=" modes " in an option file such as my. cnf (Unix operating systems) or my. ini (Windows). modes is a list of different modes separated by commas.
SQL mode (sql_mode) is a MySQL system variable. By means of this varriable the MySQL Server SQL mode is controlled. Many operational characteristics of MySQL Server can be configured by setting the SQL mode.
To determine the current value of the session or global SQL mode, use these statements: SELECT @@SESSION. sql_mode; SELECT @@GLOBAL.
SET SQL_MODE=”NO_AUTO_VALUE_ON_ZERO”; happens when different version of mysql is being used. When you are transfering from one server to another you should keep in mind the versions of database use in a new environment especially the mysql.
It's only blank for you because you have not set the sql_mode. If you set it, then that query will show you the details:
mysql> SELECT @@sql_mode; +------------+ | @@sql_mode | +------------+ | | +------------+ 1 row in set (0.00 sec) mysql> set sql_mode=ORACLE; Query OK, 0 rows affected (0.00 sec) mysql> SELECT @@sql_mode; +----------------------------------------------------------------------------------------------------------------------+ | @@sql_mode | +----------------------------------------------------------------------------------------------------------------------+ | PIPES_AS_CONCAT,ANSI_QUOTES,IGNORE_SPACE,ORACLE,NO_KEY_OPTIONS,NO_TABLE_OPTIONS,NO_FIELD_OPTIONS,NO_AUTO_CREATE_USER | +----------------------------------------------------------------------------------------------------------------------+ 1 row in set (0.00 sec) If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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