Thank you for your reply.  I have found the cause of the problem.Is a problem with importing data, column already contains the specified delimiter。Make a suggestion, hope unusual tips to clear the cause of the problem.
                                                                             Thanks again
            

在 2016年12月30日,下午10:22,Ying Zhang <Y.Zhang@cwi.nl> 写道:

Hai, looks like it works for me:

$ cat /tmp/test.csv
"test1","test2","test3","test4"
"test5","test6","test7","test8"
$ mclient -s 'create table t (s1 varchar(10), s2 varchar(10), s3 varchar(10), s4 varchar(10));'
operation successful
$ mclient -s "copy 3 records into t from '/tmp/test.csv' using delimiters ',','\\n','\"'"
2 affected rows
$ mclient -s 'select * from t;'
+-------+-------+-------+-------+
| s1    | s2    | s3    | s4    |
+=======+=======+=======+=======+
| test1 | test2 | test3 | test4 |
| test5 | test6 | test7 | test8 |
+-------+-------+-------+-------+
2 tuples

Which version of MonetDB are you using?  I’m using:
$ hg branch
Dec2016
$ hg head .
changeset:   62466:b19c518bbe33
branch:      Dec2016
user:        Sjoerd Mullender <sjoerd@acm.org>
date:        Fri Dec 23 10:42:32 2016 +0100
summary:     Remove carriage returns.


If your problem persists, please provide us the schema and sample data to reproduce the problem.

Regards,
Jennie

On 26 Dec 2016, at 10:11, ping gao 高平(0) <ping.gao@corp.elong.com> wrote:

Hi ALL
    I encountered a problem using a COPY INFO

The command to execute:
  [hotel@02 data_visual_monetdb]$ mclient -u monetdb -d hotel-revenue -s "COPY 1727300 RECORDS INTO  hotel_revenue_octopus_hotel_info  FROM  '/home/ping.gao/data_visual_monetdbinfo.data'  USING  DELIMITERS ',','\\n','\"'"
password:
Failed to import table Leftover data '"0”'

Data Format(Line separator —> \n):

     “test”,”test”,”test”,”test”



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