我想从csv文件中创建外部表格，就像这样。
CREATE EXTERNAL TABLE hctest.ex_nkp
(
a text,
b text,
c text,
d text,
e text,
f text,
g text,
h text
)
LOCATION ('gpfdist://192.168.56.111:10000/performnkp.csv')
FORMAT 'CSV' (DELIMITER ',' HEADER);
csv以逗号(,)分隔，看起来像这样。
"Subject Username","Form Title","Form Start Date","Form End Date","Competency Name","Competency Description","Core Competency","Competency Official Rating"
"90008765","Performance Review - 2nd Semester 2019 for Ely Eisley","01/01/2019","31/12/2019","1. Uncompromising Integrity","<p>High ethical standards, low tolerance of unethical conduct.</p>","Yes","3"
"90008766","Performance Review - 2nd Semester 2019 for Ely Eisley","01/01/2019","31/12/2019","2. Team Synergy","<p>Passionately work together, ensuring completeness, to achieve common goals.</p>","Yes","3"
"90008767","Performance Review - 2nd Semester 2019 for Ely Eisley","01/01/2019","31/12/2019","3. Simplicity","<p>We do our utmost to deliver the easy to use solutions, exceeding customers'","","
"90008768","Performance Review - 2nd Semester 2019 for Ely Eisley","01/01/2019","31/12/2019","4. Exceptional Performance","<p>Highest level of performance, with a heart for people.</p>","Yes","3"
我发现了这个错误。
ERROR: extra data after last expected column (seg0 slice1 192.168.56.111:6000 pid=14121)
DETAIL: External table ex_nkp, line 5 of file gpfdist://192.168.56.111:10000/performnkp.csv
我如何解决这个问题？
看起来你的CSV在第4行出现了错误。请注意，在第4行末尾，有一个单引号，Greenplum将其解释为一个换行的CSV字段。通过在第4行添加缺失的引号，我能够在Greenplum中读取该文件。
"Subject Username","Form Title","Form Start Date","Form End Date","Competency Name","Competency Description","Core Competency","Competency Official Rating"
"90008765","Performance Review - 2nd Semester 2019 for Ely Eisley","01/01/2019","31/12/2019","1. Uncompromising Integrity","<p>High ethical standards, low tolerance of unethical conduct.</p>","Yes","3"
"90008766","Performance Review - 2nd Semester 2019 for Ely Eisley","01/01/2019","31/12/2019","2. Team Synergy","<p>Passionately work together, ensuring completeness, to achieve common goals.</p>","Yes","3"
"90008767","Performance Review - 2nd Semester 2019 for Ely Eisley","01/01/2019","31/12/2019","3. Simplicity","<p>We do our utmost to deliver the easy to use solutions, exceeding customers'","","
"90008768","Performance Review - 2nd Semester 2019 for Ely Eisley","01/01/2019","31/12/2019","4. Exceptional Performance","<p>Highest level of performance, with a heart for people.</p>","Yes","3"
结果查询。
fguerrero=# select * from ex_nkp ;
NOTICE: HEADER means that each one of the data files has a header row
a | b | c | d | e | f | g | h
----------+-------------------------------------------------------+------------+------------+-----------------------------+------------------------------------------------------------------------------------+-----+---
90008765 | Performance Review - 2nd Semester 2019 for Ely Eisley | 01/01/2019 | 31/12/2019 | 1. Uncompromising Integrity | <p>High ethical standards, low tolerance of unethical conduct.</p> | Yes | 3
90008766 | Performance Review - 2nd Semester 2019 for Ely Eisley | 01/01/2019 | 31/12/2019 | 2. Team Synergy | <p>Passionately work together, ensuring completeness, to achieve common goals.</p> | Yes | 3
90008767 | Performance Review - 2nd Semester 2019 for Ely Eisley | 01/01/2019 | 31/12/2019 | 3. Simplicity | <p>We do our utmost to deliver the easy to use solutions, exceeding customers' | |
90008768 | Performance Review - 2nd Semester 2019 for Ely Eisley | 01/01/2019 | 31/12/2019 | 4. Exceptional Performance | <p>Highest level of performance, with a heart for people.</p> | Yes | 3
(4 rows)
让我知道这是否有帮助
可以在外部表定义中指定 "LOG ERRORS SEGMENT REJECT LIMIT 10"。这样，segment会跳过有错误的行。然后你可以回来追踪细节，用 "select * from gp_read_error_log('external_table_name'); "从这个例子来看，你的字段中好像多了一个逗号。试着在HEADER后面指定QUOTE'"'。