mysql> create procedure p1 ($table_name varchar(20))
-> begin
-> set @sql=concat('select * from '+$table_name);
-> prepare stmt1 from @sql;
-> execute stmt1;
-> deallocate prepare stmt1;
-> end;
运行时输入表名users提示:1054-Unknown column 'users' in 'field list'
这是怎么回事
-> begin
-> set @sql=concat('select * from '+$table_name);
-> prepare stmt1 from @sql;
-> execute stmt1;
-> deallocate prepare stmt1;
-> end;
运行时输入表名users提示:1054-Unknown column 'users' in 'field list'
这是怎么回事
解决方案 »
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