Exécuter plusieurs requête dynamique dans la procédure stockée mysql

Question

Je veux exécuter une requête et stocké le résultat dans la table temporaire et ensuite je veux utiliser la table temporaire. Ma procédure est ci-dessous

CREATE DEFINER=`be4`@`%` PROCEDURE `Report_filter_Avg`(in _year nvarchar(500),in _month nvarchar(500), in _region nvarchar(500), 
in _team nvarchar(500),in _project nvarchar(50000),in _netmr nvarchar(10),in _proposal nvarchar(10),in _maconomy nvarchar(500)) 
BEGIN 
if(_year!='') then begin set @year_=concat(' and ',_year); end; else set @year_=''; end if; 
if(_month!='') then begin set @month_=concat(' and ',_month); end; else set @month_=''; end if; 
if(_region!='') then begin set @region_=concat(' and ',_region); end; else set @region_=''; end if; 
if(_team!='') then begin set @team_=concat(' and ',_team); end; else set @team_=''; end if; 
if(_project!='') then begin set @project_=concat(' and ',_project); end; else set @project_=''; end if; 
if(_netmr!='') then begin set @netmr_=concat(' and netmr_sn=\'',_netmr,'\''); end;else set @netmr_=''; end if; 
if(_proposal!='') then begin set @proposal_=concat(' and Proposal_sn=\'',_proposal,'\''); end; else set @proposal_=''; end if; 
if(_maconomy!='') then begin set @maconomy_=concat(' and Maconomy_no like \'',_maconomy,'%\''); end; else set @maconomy_=''; end if; 
set @query_T=concat('create temporary table tbl engine=memory select * from(
select year, month,Team_Name,sum(studies)Studies, sum(SO)Hrs from production_report where SO > 0 ',coalesce(@year_,''),coalesce(@month_,''),coalesce(@region_,''), 
coalesce(@team_,''),coalesce(@project_,''),coalesce(@netmr_,''),coalesce(@proposal_,''),coalesce(@maconomy_,''),' group by Year,Month,Team_Name union all 
select year, month,concat(Region_Name,''_SP'')Team_Name,sum(studies)Studies, sum(SP)Hrs from production_report where SP > 0 ',coalesce(@year_,''),coalesce(@month_,''),coalesce(@region_,''), 
coalesce(@team_,''),coalesce(@project_,''),coalesce(@netmr_,''),coalesce(@proposal_,''),coalesce(@maconomy_,''),' group by Year,Month,Team_Name union all 
select year, month,concat(Region_Name,''_DP'')Team_Name,sum(studies)Studies, sum(DP)Hrs from production_report where DP > 0 ',coalesce(@year_,''),coalesce(@month_,''),coalesce(@region_,''), 
coalesce(@team_,''),coalesce(@project_,''),coalesce(@netmr_,''),coalesce(@proposal_,''),coalesce(@maconomy_,''),' group by Year,Month,Team_Name union all 
select year, month,concat(Region_Name,''_CS'')Team_Name,sum(studies)Studies, sum(CS)Hrs from production_report where CS > 0 ',coalesce(@year_,''),coalesce(@month_,''),coalesce(@region_,''), 
coalesce(@team_,''),coalesce(@project_,''),coalesce(@netmr_,''),coalesce(@proposal_,''),coalesce(@maconomy_,''),' group by Year,Month,Team_Name union all 
select year, month,Region_Name,sum(studies)Studies, sum(TAB)Hrs from production_report where TAB > 0 ',coalesce(@year_,''),coalesce(@month_,''),coalesce(@region_,''), 
coalesce(@team_,''),coalesce(@project_,''),coalesce(@netmr_,''),coalesce(@proposal_,''),coalesce(@maconomy_,''),' group by Year,Month,Team_Name union all 
select year, month,''OE'',sum(studies)Studies, sum(OE)Hrs from production_report where OE > 0 ',coalesce(@year_,''),coalesce(@month_,''),coalesce(@region_,''), 
coalesce(@team_,''),coalesce(@project_,''),coalesce(@netmr_,''),coalesce(@proposal_,''),coalesce(@maconomy_,''),' group by Year,Month,Team_Name 
)B;'); 
PREPARE st FROM @query_T; 
EXECUTE st; 
DEALLOCATE PREPARE st; 
set @query_C=('create temporary table tbl_count(select Year,Month,Team_Name,count(Month)count from tbl group by Year,Team_Name);'); 
PREPARE st FROM @query_C; 
EXECUTE st; 
DEALLOCATE PREPARE st; 
set @query_M=('select B.Year,concat(B.Team_Name,''('',B.Year,'')'')Team_Name,sum(Jan)Jan,sum(Feb)Feb,sum(Mar)Mar,sum(Apr)Apr,sum(May)May,sum(Jun)Jun,sum(Jul)Jul, 
sum(Aug)Aug,sum(sep)Sep,sum(Oct)Oct,sum(Nov)Nov,sum(dec_)Dec_,round((sum(Jan)+sum(Feb)+sum(Mar)+sum(Apr)+sum(May)+sum(Jun)+sum(Jul)+sum(Aug) 
+sum(sep)+sum(Oct)+sum(Nov)+sum(Dec_))/count,1) Total from(
SELECT Year,Month,Team_Name,case when Month=1 then Hrs else 0 end Jan,case when Month=2 then Hrs else 0 end Feb, 
case when Month=3 then Hrs else 0 end Mar,case when Month=4 then Hrs else 0 end Apr,case when Month=5 then Hrs else 0 end May, 
case when Month=6 then Hrs else 0 end Jun,case when Month=7 then Hrs else 0 end Jul,case when Month=8 then Hrs else 0 end Aug, 
case when Month=9 then Hrs else 0 end Sep,case when Month=10 then Hrs else 0 end Oct,case when Month=11 then Hrs else 0 end Nov, 
case when Month=12 then Hrs else 0 end Dec_ from(
select Year,Month,Team_Name,round(Hrs/Studies,1)Hrs from tbl group by Team_Name,Month,Year)A group by Year,Month,Team_Name 
)B left join tbl_count on tbl_count.Team_Name=B.Team_Name and tbl_count.Year=B.Year 
group by Year,Team_Name order by Team_Name ASC;'); 
PREPARE st FROM @query_M; 
EXECUTE st; 
DEALLOCATE PREPARE st; 
set @query_D1=('drop temporary table tbl;drop temporary table tbl_count;'); 
PREPARE st FROM @query_D; 
EXECUTE st; 
DEALLOCATE PREPARE st; 
set @query_D2=('drop temporary table tbl_count;'); 
PREPARE st FROM @query_D2; 
EXECUTE st; 
DEALLOCATE PREPARE st; 

Le code ci-dessus est-il correct ou non? Comment puis-je l'utiliser?

Answer 1

Pourquoi n'utilisez-vous pas view? C'est utile si vous ne voulez pas changer la table:

En SQL, une vue est une table virtuelle basée sur le résultat d'une instruction SQL.

Une vue contient des lignes et des colonnes, tout comme une table réelle. Les champs d'une vue sont des champs d'une ou de plusieurs tables réelles de la base de données.

Vous pouvez ajouter des instructions SQL, WHERE et JOIN à une vue et présenter les données comme si les données provenaient d'une seule table.

Vous pouvez en savoir plus sur les vues dans w3school