预编译语句Prepared Statements，俗称动态sql

    -- 创建临时表用动态sql创建
    set @sqls = concat('create temporary table ',`temptableTableName`,'(variable varchar(200),variableValue varchar(200),variableDate varchar(50))');
     prepare stmt1 from @sqls;   #准备好sql语句
     execute stmt1;      #执行sql
     deallocate prepare stmt1;    #释放准备    
    
    -- 执行插入
     set @s = concat('insert into ',`temptableTableName`,'(variable,variableValue,variableDate) values(''1'',''1'',''1''),(''2'',''2'',''2''),(''3'',''3'',''3'')');
     select @s;
     prepare stmt2 from @s;
     execute stmt2;
     drop prepare stmt2;

    -- 批量插入
    set @s2 = concat('insert into t_dd_aa(variable,variableValue,variableDate) select variable,variableValue,variableDate from ', `temptableTableName`);
    select @s2;
    prepare stmt3 from @s2;
    execute stmt3;
    drop prepare stmt3;