本文为mariadb官方手册:DECLARE Variable的译文。 原文:https://mariadb.com/kb/en/library/declare-variable/ 我提交到MariaDB官方手册的译文:https://mariadb.com/kb/zh-cn/declare-variable/ 语法: DECLARE var_name[, var_name]... type[DEFAULT value] 描述 该语句用在该语句用来在存储程序stored programs...
在MariaDB中,我们可以使用DECLARE语句来声明一个变量,然后使用SET语句来给变量赋值。 DECLARE语句的基本语法如下: ```sql DECLARE variable_name data_type; ``` 我们可以声明一个整数变量如下: ```sql DECLARE num INT; ``` ```sql SET num = 10; ``` 除了直接给变量赋值外,我们也可以使用SELECT语句将...
This MariaDB tutorial explains how to declare a cursor in MariaDB with syntax and examples. A cursor is a SELECT statement that is defined within the declaration section of your stored program. in MariaDB.
there may be an handler for 1050 error, a separate handler for the 42S01 SQLSTATE, and another separate handler for theSQLEXCEPTIONclass: in theory all occurrences ofHANDLERmay catch the 1050 error, but MariaDB chooses theHANDLERwith the highest precedence. Here are the precedence rules:...
在5.6主备都开启GTID-MODE的时候,备库同步线程停止,且Last_SQL_Error显示“When @@SESSION.GTID_NEXT is set to a GTID, you must explicitly set it to a different value after a COMMIT or ROLLBACK. Please check GTID_NEXT variable manual page for detailed explanation. Current @@SESSION.GTID_NEXT ...
This file is distributed with the source of both MySQL and MariaDB. It is licensed under the terms of the GPL, version 2. fill_help_tables.sql contained the following copyright notice when the content was accessed: Copyright (C) 2000-2008 MySQL AB, 2008-2009 Sun Microsystems, Inc. This...
当发生一个错误的时候,可能有多个handler可以同时处理这个错误。例如,有一个处理1050错误码的handler,一个处理SQLSTATE为42S01的handler,以及一个SQLEXCEPTION类型的handler:在理论上,所有handler都可以捕获到1050错误,但是MariaDB将会选择优先级最高的handler进行处理。优先级规则如下: ...