I want to upload a CSV file with having regional language character in some of values , e.g. if format is like
FirstName,LastName,DOB,State
Rahul,Gour,25-Mar-1988,Delhi
രാഹുൽ,ഗൗർ,24-മാർ-1987,Kerala
in above format some line exists with loacal langauge (Malyalam) when i uploading this file data where this speical charater showing data as "????????????
Is there any format i can use to upload this data as it is , or we cannot be do this in PostgreSQL.
Please help.
You have to figure out what kind of encoding the CSV file uses. Most probably it is using the UTF-8 encoding. Afterwards you can just use:
copy tablename (firstname, lastname, dob, state)
from /path/to/the/file.csv
with (encoding 'UTF-8', format csv);
If the server doesn't have access to the file you can use the equivalent \copy command for psql.
Related
I try to read a csv file containing real numbers with a comma as separator. I try to read this file with \copy in psql:
\copy table FROM 'filename.csv' DELIMITER ';' CSV HEADER;
psql does not recognize the comma as decimal point.
psql:filename.sql:44: ERROR: invalid input syntax for type real: "9669,84"
CONTEXT: COPY filename, line 2, column col-3: "9669,84"
I did some googling but could not find any answer other than "change the decimal comma into a decimal point". I tried SET DECIMALSEPARATORCOMMA=ON; but that did not work. I also experimented with some encoding but I couldn't find whether encoding governs the decimal point (I got the impression it didn't).
Is there really no solution other than changing the input data?
COPY to a table where you insert the number into a varchar field. Then do something like in psql:
--Temporarily change numeric formatting to one that uses ',' as
--decimal separator.
set lc_numeric = "de_DE.UTF-8";
--Below is just an example. In your case the select would be part of
--insert into the target table. Also the first part of to_number
--would be the field from your staging table.
select to_number('9669,84', '99999D999');
9669.84
You might need to change the format string to match all the numbers. For more information on what is available see Data formatting Table 9.28. Template Patterns for Numeric Formatting.
I am importing data from a file to PostgreSQL database table using COPY FROM.
Some of the strings in my file contain hex characters (mostly \x0d and \x0a) and I'd like them to be converted into regular text using COPY.
My problem is that they are treated as regular text and remain in the string unchanged.
How can I get the hex values converted?
Here is a simplified example of my situation:
-- The table I am importing to
CREATE TABLE my_pg_table (
id serial NOT NULL,
value text
);
COPY my_pg_table(id, data)
FROM 'location/data.file'
WITH CSV
DELIMITER ' ' -- this is actually a tab
QUOTE ''''
ENCODING 'UTF-8'
Example file:
1 'some data'
2 'some more data \x0d'
3 'even more data \x0d\x0a'
Note: the file is tab delimited.
Now, doing:
SELECT * FROM my_pg_table
would get me results containing hex.
Additional info for context:
My task is to export data from sybase tables (many hundreds) and import to Postgres. I am using UNLOAD to export data to files like so:
UNLOAD
TABLE my_sybase_table
TO 'location/data.file'
DELIMITED BY ' ' -- this is actually a tab
BYTE ORDER MARK OFF
ENCODING 'UTF-8'
It seems to me that (for a reason I don't understand) hex is only converted when using FORMAT TEXT and FORMAT CSV will treat it as regular string.
Solving the problem in my situation:
Because I had to use TEXT I didn't have the QUOTE option anymore and because of that I couldn't have quoted strings in my files anymore. So I needed my files in a little different format and eventually used this to export my table from sybase:
UNLOAD
SELECT
COALESCE(cast(id as long varchar), '(NULL)'),
COALESCE(cast(data as long varchar), '(NULL)')
FROM my_sybase_table
TO 'location/data.file'
DELIMITED BY ' ' -- still tab delimited
BYTE ORDER MARK OFF
QUOTES OFF
ENCODING 'UTF-8'
and to import it to postgres:
COPY my_pg_table(id, data)
FROM 'location/data.file'
DELIMITER ' ' -- tab delimited
NULL '(NULL)'
ENCODING 'UTF-8'
I used (NULL), because I needed a way to differentiate between an empty string and null. I casted every column to long varchar, to make my mass export/import more convenient.
I'd be still very interested to know why hex wouldn't convert when using FORMAT CSV.
I am wondering what the delimiter from this .csv file is. I am trying to import the .csv via the COPY FROM Statement, but somehow it throws always an error. When I change the delimiter to E'\t' it throws an error. When I change the delimiter to '|' it throws a different error. I have been trying to import a silly .csv file for 3 days and I cannot achieve a success. I really need your help. Here is my .csv file: Download here, please
My code on postgresql looks like this:
CREATE TABLE movie
(
imdib varchar NOT NULL,
name varchar NOT NULL,
year integer,
rating float ,
votes integer,
runtime varchar ,
directors varchar ,
actors varchar ,
genres varchar
);
MY COPY Statement:
COPY movie FROM '/home/max/Schreibtisch/imdb_top100t_2015-06-18.csv' (DELIMITER E'\t', FORMAT CSV, NULL '', ENCODING 'UTF8');
When I use SHOW SERVER_ENCODING it says "UTF8". But why the hell can't postgre read the datas from the columns? I really do not get it. I use Ubuntu 64 bit, the .csv file has all the permissions it needs, postgresql has also. Please help me.
These are my errors:
ERROR: missing data for column "name"
CONTEXT: COPY movie, line 1: "tt0468569,The Dark Knight,2008,9,1440667,152 mins.,Christopher Nolan,Christian Bale|Heath Ledger|Aar..."
********** Error **********
ERROR: missing data for column "name"
SQL state: 22P04
Context: COPY movie, line 1: "tt0468569,The Dark Knight,2008,9,1440667,152 mins.,Christopher Nolan,Christian Bale|Heath Ledger|Aar..."
Use this code instead it is working fine on Linux as well on windows
\COPY movie(imdib,name,year,rating,votes,runtime,directors,actors,genres) FROM 'D:\test.csv' WITH DELIMITER '|' CSV HEADER;
and one more thing insert header in your csv file like shown below:
imdib|name|year|rating|votes|runtime|directors|actors|genres
tt0111161|The Shawshank Redemption|1994|9.3|1468273|142 mins.|Frank Darabont|Tim Robbins|Morgan Freeman
and use single byte delimiter like ',','|' etc.
Hope this will work for you ..!
The following works for me:
COPY movie (imdib,name,year,rating,votes,runtime,directors,actors,genres)
FROM 'imdb_top100t_2015-06-18.csv'
WITH (format csv, header false, delimiter E'\t', NULL '');
Unfortunately the file is invalid because on line 12011 the column year contains the value 2015 Video and thus the import fails because this can't be converted to an integer. And then further down (line 64155) there is an invalid value NA for the rating which can't be converted to a float and then one more for the votes.
But if you create the table with all varchar columns the above command worked for me.
I have an input CSV file containing something like:
SD-32MM-1001,"100.00",4/11/2012
SD-32MM-1001,"1,000.00",4/12/2012
I was trying to COPY import that into a postgresql table(varchar,float8,date) and ran into an error:
# copy foo from '/tmp/foo.csv' with header csv;
ERROR: invalid input syntax for type double precision: "1,000.00"
Time: 1.251 ms
Aside from preprocessing the input file, is there some setting in PG that will have it read a file like the one above and convert to numeric form in COPY? Something other than COPY?
If preprocessing is required, can it be set as part of the COPY command? (Not the psql \copy)?
Thanks a lot.
The option to pre processing is to first copy to a temporary table as text. From there insert into the definitive table using the to_number function:
select to_number('1,000.00', 'FM000,009.99')::double precision;
It's an odd CSV file that surrounds numeric values with double quotes, but leaves values like SD-32MM-1001 unquoted. In fact, I'm not sure I've ever seen a CSV file like that.
If I were in your shoes, I'd try copy against a file formatted like this.
"SD-32MM-1001",100.00,4/11/2012
"SD-32MM-1001",1000.00,4/12/2012
Note that numbers have no commas. I was able to import that file successfully with
copy test from '/fullpath/test.dat' with csv
I think your best bet is to get better formatted output from your source.
There's 1 column that contains commas. When I output my query to csv, these commas break the csv format. What I've been doing to avoid this is a simple
replace(A."Sales Rep",',','')
Is there a better way of doing this so that I can actually get the commas in the final output without breaking the csv file?
Thanks!
You can use the COPY command to get PostgreSQL to build the CSV for you:
COPY -- copy data between a file and a table
Something like one of these:
copy your_table to 'filename' csv
copy your_table to 'filename' csv force quote *
copy your_table to stdout csv force quote *
copy your_table to stdout csv force quote * header
...
You have to be the super user to copy to a filename though. If you're inside psql, you can use the \copy command:
Performs a frontend (client) copy. This is an operation that runs an SQL COPY command, but instead of the server reading or writing the specified file, psql reads or writes the file and routes the data between the server and the local file system.
The syntax is pretty much the same:
\copy your_table to 'filename.csv' csv force quote * header
...
Quote the fields with "
a,this has a , in it,b
would become
a,"this has a, in it",b
and if the fields have BOTH a , and a ", double the quotes:
a,this has a " and , in it,b
becomes
a,"this has a "" and , in it",b