mariadb set variable from select
SQL statement used primarily for retrieving data from a MariaDB database. ... SELECT INTO Variable - selecting and setting variables. The reverse of SELECT ... ,For the complete syntax, see SELECT. Another way to set a variable's value is the SET statement. SELECT ... INTO results are not stored in the query cache ...
相關軟體 phpMyAdmin 資訊 | |
---|---|
phpMyAdmin 是一個用 PHP 編寫的免費軟件工具,旨在通過 Web 處理 MySQL 的管理。 phpMyAdmin 支持 MySQL,MariaDB 和 Drizzle 上的各種操作。經常使用的操作(管理數據庫,表,列,關係,索引,用戶,權限等等)可以通過用戶界面執行,而您仍然可以直接執行任何 SQL 語句。phpMyAdmin 功能:直觀的 Web 界面支持大多數 MySQL 功能:... phpMyAdmin 軟體介紹
mariadb set variable from select 相關參考資料
MySQL: Set user variable from result of query - Stack Overflow
Yes, but you need to move the variable assignment into the query: SET @user := 123456; SELECT @group := `group` FROM user WHERE ... https://stackoverflow.com SELECT - MariaDB Knowledge Base
SQL statement used primarily for retrieving data from a MariaDB database. ... SELECT INTO Variable - selecting and setting variables. The reverse of SELECT ... https://mariadb.com SELECT INTO - MariaDB Knowledge Base
For the complete syntax, see SELECT. Another way to set a variable's value is the SET statement. SELECT ... INTO results are not stored in the query cache ... https://mariadb.com SET - MariaDB Knowledge Base
Set a variable value. ... (HY000): Variable 'innodb_sync_spin_loops' is a GLOBAL variable and should be set with SET GLOBAL SELECT VARIABLE_NAME, ... https://mariadb.com SET a variable in SELECT statement - MySQL - Stack Overflow
The issue is that you cannot mix select and set in one statement, there'll surely be syntax ... Here's how you update the variable upon each row: https://stackoverflow.com SET Variable - MariaDB Knowledge Base
SET can be used with both local variables and user-defined variables. When setting several variables using the columns returned by a query, SELECT INTO should be preferred. To set many variables to th... https://mariadb.com Setting user-defined variable with select in stored procedure ...
I did some further research and found this to work. GUI Input: enter image description here. SQL Query Input: enter image description here. https://stackoverflow.com SHOW VARIABLES - MariaDB Knowledge Base
The WHERE clause can be given to select rows using more general conditions. With the GLOBAL ... See SET for information on setting server system variables. https://mariadb.com User-Defined Variables - MariaDB Knowledge Base
To set a value for a user-defined variable you can use: SET statement; := operator within a SQL statement; SELECT ... https://mariadb.com Using User-Defined Variables in SQL Statements - MySQL ...
You can assign a value returned by a SELECT statement to a user-defined variable, and then refer to the variable later in your mysql session. This provides a ... https://www.oreilly.com |