Mysql 选择多个 id

Question

我需要像这样执行查询:

SELECT draw,SUM(uplata) as uplata, SUM(wonamount) as isplata,
 SUM(uplata)- SUM(wonamount) as stanje,
 COUNT(*) as ukupno_tiketa FROM macau.tickets
 WHERE  shop ='105' and status != 1 and draw = 1; 

我需要执行该查询 100 次，仅将 draw = 1 更改为 draw = 2、draw = 3 等...

我如何才能为 mysql workbench 中的每个 select 语句获取一个新行，以便能够将所有内容导出到 csv 文件 .??

Answer 1

首先，您需要编写一个带有 while 循环的存储过程:

drop procedure if exists load_test_data;
delimiter #
create procedure load_test_data()
begin
declare v_max int unsigned default 100;
declare v_counter int unsigned default 0;
  start transaction;
  truncate table new_table;
  while v_counter < v_max do
    insert into new_table SELECT draw,SUM(uplata) as uplata, SUM(wonamount) 
   as isplata, SUM(uplata)- SUM(wonamount) 
   as stanje, COUNT(*) as ukupno_tiketa 
   FROM macau.tickets WHERE
  shop ='105' and status != 1 and draw = v_counter;
   set v_counter=v_counter+1;
  end while;
  commit;
end #
delimiter ;

稍后您可以调用此过程来运行它:

call load_test_data();

您可以将 new_table 转储到 csv 文件:

SELECT *
FROM new_table
INTO OUTFILE '[path]/File.csv'
FIELDS TERMINATED BY ','
ENCLOSED BY '"'
LINES TERMINATED BY '\n'

注意:将 [path] 替换为您希望文件所在的文件夹。请记住，该文件夹应该是可写的，并且需要设置所有完全权限。 Read this