mysql - 将动态语句从 SQL-Server 转换为 Mysql

Question

任何人都可以帮我找到与以下 MS SQL 语法相对应的 mysql 吗？

CREATE PROCEDURE testsp @COLUMN_NAME VARCHAR(20), @COLUMN_VALUE VARCHAR(20)
AS

DECLARE @SQL VARCHAR(40)  
SET @SQL = 'UPDATE TableX set ''+@COLUMN_NAME+ ''=''+@COLUMN_VALUE+'' '
PRINT (@SQL)
EXEC (@SQL)

能否将这段代码翻译成Mysql？

谢谢!

Answer 1

CREATE PROCEDURE testsp (COLUMN_NAME VARCHAR(20), COLUMN_VALUE VARCHAR(20))
BEGIN
    SET @SQL_COMMAND = CONCAT('UPDATE TableX SET ', COLUMN_NAME, ' = ?');
    SELECT @SQL_COMMAND; /* prints the command */
    PREPARE SQL_STMT FROM @SQL_COMMAND;
    EXECUTE SQL_STMT USING COLUMN_VALUE;
    DEALLOCATE SQL_STMT;
END