Using SQL to run isolated in stored procedures

BEGIN declare u_name varchar (declare),s_name varchar (+);  Set U_name= ' Update '; set s_name=concat (' Set cur_status = ', ' n '); set @u_table=concat (u_ Name,t_name,s_name); Select @sql_info:=sql_info from Sql_info where code=code_info; PREPARE Pre_sql from @sql_info; PREPARE Pre_u from @u_table; EXECUTE Pre_sql; EXECUTE Pre_u; deallocate prepare pre_sql; deallocate prepare Pre_u; Update Sql_info set Use_time=unix_timestamp (now ()) where code=code_info; update Calculate_data  set  = ' All ' Where  item = item_code; end

Using SQL to run isolated in stored procedures