Question

在导出数据价格值的db2中，我得到这样的结果

＆＃34 + 00000000000000000000000020.96000＆＃34;

如何删除之前的价格零值。

我不喜欢这样＆＃34; 20.96000＆＃34; 。

我的查询

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

我无法测试，但尝试使用cast( sum(orders.TOTALPRODUCT) as decimal( 31, 6 )代替OP中的sum(orders.TOTALPRODUCT)。如果前导零持续存在，那么可能正在使用的db2是LUW [没有提到平台，也没有提到OP中的版本信息也没有标签]并且[显式CHAR和可能还有]隐式转换从数字到字符，其中已知前导零是过去缺陷的结果;即，较旧的数据库可能需要修改才能使转换在DB2 for Linux UNIX and Windows 10.1.0->Database fundamentals->SQL->Built-in functions->Scalar functions->CHAR

中按注释而没有前导零的情况下运行

十进制到字符和前导零：在版本9.7之前的版本中，此函数的十进制输入结果包括前导零和尾随十进制字符。数据库配置参数dec_to_char_fmt可以设置为“V95”，以使此函数返回小数输入的版本9.5结果。新数据库的dec_to_char_fmt的默认值为“NEW”，该函数返回的结果与SQL标准转换规则匹配，并与VARCHAR函数的结果一致。

Answer 2

导出表时，您可以使用VARCHAR或TRIM OR STRIP函数，如下所示;

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"

实施例;

样本表：

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 3

您可以通过简单地将striplzeros作为参数来告诉export-script删除所有列中的前导零。

db2 "EXPORT TO customerpurchase2016.csv OF del modified BY coldel, striplzeros
SELECT   userreg.logonid, 
         nvl(address.firstname,'') 
...

另请参见https://www.ibm.com/support/knowledgecenter/de/SSEPGG_10.5.0/com.ibm.db2.luw.admin.cmd.doc/doc/r0008303.html#r0008303__d73620e525

在db2中我输出的数据价格值是这样的＆＃34; + 00000000000000000000000020.96000＆＃34;价格值我们有十进制列

3 个答案: