CREATE DEFINER=`root`@`%` PROCEDURE `Proc_PageCondition`(p_cloumns varchar(500),

p_tables varchar(400),

p_where varchar(4000),

p_order varchar(100),

p_pageindex int,

p_pagesize int,

out p_recordcount int,

out p_pagecount int)

begin

declare v_sqlcounts varchar(4000);

declare v_sqlselect varchar(4000);

set v_sqlcounts = concat('select count(*) into @recordcount from ',p_tables,p_where);

set @sqlcounts = v_sqlcounts;

prepare stmt from @sqlcounts;

execute stmt;

deallocate prepare stmt;

set p_recordcount = @recordcount;

set p_pagecount = ceiling((p_recordcount+0.0)/p_pagesize);

if p_pageindex <1 then

set p_pageindex = 1;

end if;

set v_sqlselect = concat('select ',p_cloumns,' from ',p_tables,p_where,if(p_order is not null,p_order,''),' limit ',(p_pageindex-1)*p_pagesize,' , ',p_pagesize);

set @sqlselect = v_sqlselect;

prepare stmtselect from @sqlselect;

execute stmtselect;

deallocate prepare stmtselect;

end

set @p_cloumns = ' tr.id trainID,te.id eventID,u.uid userID,u.username,te.EventTime,te.EventLength,te.EventResult,tt.MaxSpeed,tt.MaxRotateSpeed,tt.ForeOrBack,te.EventStartFrameNumber,te.EventEndFrameNumber ';

set @p_tables = ' train_event te left join train_track tt on te.trackID=tt.id left join users u on u.uid=tt.TrainnerID left join training_record tr on te.TrainID=tr.id ';

set @p_where = ' where 1=1 ';

set @p_order = ' order by te.EventTime desc ';

set @p_pageindex = 1;

set @p_pagesize = 10;

set @p_recordcount = 0;

set @p_pagecount = 0;

call rigour_tennis_db.Proc_PageCondition(@p_cloumns, @p_tables, @p_where, @p_order, @p_pageindex, @p_pagesize, @p_recordcount, @p_pagecount);

select @p_cloumns, @p_tables, @p_where, @p_order, @p_pageindex, @p_pagesize, @p_recordcount, @p_pagecount;