根據資料表統計某地某年農作物種植面積
select *from t_distribution ;
select sum(area_num) as "2016總面積" from t_distribution where ad_area_code like '6103%' and current_year ='2016';
select sum(area_num) as "2016小麥面積" from t_distribution where ad_area_code like '6103%' and flag ='0' and current_year ='2016';
select sum(area_num) as "2016玉公尺面積" from t_distribution where ad_area_code like '6103%' and flag ='1' and current_year ='2016';
select sum(area_num) as "2016其他面積" from t_distribution where ad_area_code like '6103%' and flag ='2' and current_year ='2016';
select sum(area_num) as "2017總面積" from t_distribution where ad_area_code like '6103%' and current_year ='2017';
select sum(area_num) as "2017小麥面積" from t_distribution where ad_area_code like '6103%' and flag ='0' and current_year ='2017';
select sum(area_num) as "2017玉公尺面積" from t_distribution where ad_area_code like '6103%' and flag ='1' and current_year ='2017';
select sum(area_num) as "2017其他面積" from t_distribution where ad_area_code like '6103%' and flag ='2' and current_year ='2017';
select sum(area_num) as "2018總面積" from t_distribution where ad_area_code like '6103%' and current_year ='2018';
select sum(area_num) as "2018小麥面積" from t_distribution where ad_area_code like '6103%' and flag ='0' and current_year ='2018';
select sum(area_num) as "2018玉公尺面積" from t_distribution where ad_area_code like '6103%' and flag ='1' and current_year ='2018';
select sum(area_num) as "2018其他面積" from t_distribution where ad_area_code like '6103%' and flag ='2' and current_year ='2018';
select sum(area_num) as "總面積" from t_distribution where ad_area_code like '6103%' and current_year ='2019';
select sum(area_num) as "小麥面積" from t_distribution where ad_area_code like '6103%' and flag ='0' and current_year ='2019';
select sum(area_num) as "玉公尺面積" from t_distribution where ad_area_code like '6103%' and flag ='1' and current_year ='2019';
select sum(area_num) as "其他面積" from t_distribution where ad_area_code like '6103%' and flag ='2' and current_year ='2019';
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