END IF; END; || It seems that the if statement in trigger cause problems. I want to insert changed values into the notification_mail table, what shall I do? Thanks. Sorry, you can't reply to this topic. It has been closed.
Each statement_list consists of one or more SQL statements; an empty statement_list is not permitted. An IF ... END IF block, like all other flow-control blocks used within stored programs, must be terminated with a semicolon, as shown in this example: ...
Summary: in this tutorial, you will learn how to use MySQL IF statement to execute a block of SQL code based on conditions. The MySQL IF statement allows you to execute a set of SQL statements based on a certain condition or value of an expression. To form an expression in MySQL, you...
其中,search_condition 参数表示条件判断语句,如果返回值为 TRUE ,相应的 SQL 语句列表(statement_list)被执行;如果返回值为 FALSE,则 ELSE 子句的语句列表被执行。statement_list 可以包括一个或多个语句。 注意:MySQL 中的 IF( ) 函数不同于这里的 IF 语句。 例1 下面是一个使用 IF 语句的示例。代码如下:...
IF 是一个复合 MySQL 语句,它有一个或一组语句和一个条件。如果指定条件的值为 TRUE,则执行给定的语句。每个语句可能有多个 SQL 语句之一。IF 中不允许空语句。 句法 以下是 MySQL 中 IF 语句的语法 IFsearch_condition THEN statement_list [ELSEIFsearch_condition THEN statement_list] ... ...
有趣的statement stack 在MySQL8中,相关定义如下: /** Max size of the statements stack. */ uint statement_stack_max; /** nested statement...in set (10.01 sec) Query OK, 0 rows affected (10.01 sec) 4) 切换终端1输入命令: USE PERFORMANCE_SCHEMA; mysql...---+ | CALL p1(10) | | SE...
mysql 存储过程多个符号切割 mysql 存储过程 if,一、知识拆解1、创建临时表1.1作用:临时保存表数据1.2生命周期:随创建语句而产生,随当前会话关闭而自动销毁,或者手动销毁1.2基本语法//语法上和创建普通表多加了TEMPORARY,其他完全一样createTEMPORARYtabletable_name(
How do you solve the problem that the cursor is declared inside an if statement? If you declare the cursor at the begining of SP you can´t set different things into it... I have the same problem migrating from SQL Server to MySQL and I don't know how to solve this.. Can you ...
This query uses the COALESCE function with NULLIF as a form of SQL if statement in SELECT. If the Department is 'IT', NULLIF returns null, and then COALESCE replaces it with 'Not IT'.SELECT FirstName, LastName, COALESCE(NULLIF(Salary, 75000), 60000) as AdjustedSalary FROM Employees;...
Hi all, I'm having issues with the following IF statement in MySQL 5.5.9 - it's telling me there is an error in the syntax. I want to execute this every minute as a scheduled event procedure (although that's not really relevant to the syntax issue). ...