在DB2我导出数据的价格值让这样的“00000000000000000000000020.96000”价格价值，我们有小数列

Question

时，我导出数据的价格值DB2，我越来越喜欢这个

“00000000000000000000000020.96000”

如何删除之前的零价格值。

我是这样的例外“20.96000”。

我这样的查询

sum(orders.TOTALPRODUCT) this value I am getting like this "+00000000000000000000000020.96000" 

db2 "EXPORT TO customerpurchase2016.csv OF del modified BY coldel, 
SELECT userreg.logonid, 
     nvl(address.firstname,'') 
        ||' ' 
        ||                   address.lastname, 
     sum(orders.totalproduct)                AS totalproduct, 
     sum(orders.totalproduct+orders.totaltax+orders.totalshipping+orders.totaladjustment) AS totalamount, 
     userdemo.field7 
FROM  orders, 
     userreg, 
     userdemo, 
     address 
WHERE address.member_id=userdemo.users_id 
AND  userdemo.users_id=userreg.users_id 
AND  userreg.users_id=orders.member_id 
AND  orders.status NOT IN('J', 
           'P', 
           'X') 
AND  orders.lastupdate BETWEEN '2016-01-01-00.00.00.000000' AND  '2016-12-30-12.00.00.000000' 
AND  address.status='P' 
AND  address.selfaddress=1 
GROUP BY userreg.logonid, 
     userdemo.field7, 
     address.firstname, 
     address.lastname" 

Answer 1

可以如下导出表时使用VARCHAR或TRIM OR STRIP功能;

db2 "EXPORT TO customerpurchase2016.csv OF del modified BY coldel, 
SELECT userreg.logonid, 
     nvl(address.firstname,'') 
        ||' ' 
        ||                   address.lastname, 
     TRIM(sum(orders.totalproduct))                AS totalproduct, 
     sum(orders.totalproduct+orders.totaltax+orders.totalshipping+orders.totaladjustment) AS totalamount, 
     userdemo.field7 
FROM  orders, 
     userreg, 
     userdemo, 
     address 
WHERE address.member_id=userdemo.users_id 
AND  userdemo.users_id=userreg.users_id 
AND  userreg.users_id=orders.member_id 
AND  orders.status NOT IN('J', 
           'P', 
           'X') 
AND  orders.lastupdate BETWEEN '2016-01-01-00.00.00.000000' AND  '2016-12-30-12.00.00.000000' 
AND  address.status='P' 
AND  address.selfaddress=1 
GROUP BY userreg.logonid, 
     userdemo.field7, 
     address.firstname, 
     address.lastname" 

示例;

的试样台：

create table pricetable (price decimal(31,5)); 

insert into pricetable (price) values(20.96); 
insert into pricetable (price) values(21.97); 
insert into pricetable (price) values(22.98); 
insert into pricetable (price) values(20.99); 

导出无功能;

CALL SYSPROC.ADMIN_CMD('EXPORT TO "/tmp/export" OF DEL MESSAGES ON SERVER SELECT PRICE FROM PRICETABLE'); 

user@host:/tmp:>cat export 
+00000000000000000000000020.96000 
+00000000000000000000000021.97000 
+00000000000000000000000022.98000 
+00000000000000000000000020.99000 

使用varchar或trim或strip函数进行导出;

CALL SYSPROC.ADMIN_CMD('EXPORT TO "/tmp/export" OF DEL MESSAGES ON SERVER SELECT VARCHAR(PRICE) FROM PRICETABLE'); 

user@host:/tmp:>cat export 
"20.96000" 
"21.97000" 
"22.98000" 
"20.99000" 

Answer 2

我无法测试，但尝试到位sum(orders.TOTALPRODUCT)从OP的使用cast(sum(orders.TOTALPRODUCT) as decimal(31, 6)。如果前导零仍然存在，那么可能使用的db2是LUW [没有提到平台，版本信息是在OP中创建的，也不是标签]，并且可能存在[显式CHAR和可能的隐式转换]字符，据此前导零被认为是过去的缺陷的结果;即旧的数据库可能需要修改，以使铸件DB2 for Linux UNIX and Windows 10.1.0->Database fundamentals->SQL->Built-in functions->Scalar functions->CHAR

十进制无每注意前导零的功能字符和前导零：在之前的版本9.7版本，其结果为十进制输入此功能包括前导零和尾随小数字符。可以将数据库配置参数dec_to_char_fmt设置为“V95”以使此函数返回9.5版十进制输入的结果。新数据库的dec_to_char_fmt默认值为“NEW”，该函数返回的结果与SQL标准转换规则相匹配，并与VARCHAR函数的结果一致。