PostgreSQL csv import not working for only integer - sql

Question

I have the following problem using PostgreSQL 14
On Windows 10 with latest updates.
I need to insert values into the following table.
CREATE TABLE StateList (
ID int GENERATED ALWAYS AS IDENTITY,
State_Number int NOT NULL,
ElectionGroup_ID INT NOT NULL,
Election_Number int NOT NULL,
UNIQUE (State_Number, ElectionGroup_ID, Election_Number),
PRIMARY KEY (ID)
);
I want to do the following command:
COPY StateList(Election_Number, State_Number, ElectionGroup_ID )
FROM '...\csvFileStateLists19.csv'
WITH (
FORMAT CSV,
DELIMITER ','
);
the "csvFileStateLists19" being
"19","9","4"
"19","5","238"
"19","5","21"
"19","15","1"
"19","5","10"
It worked fine for another table that used strings and integer.
But here I always get:
ERROR: FEHLER: ungültige Eingabesyntax für Typ integer: »19«
CONTEXT: COPY statelist, Zeile 1, Spalte election_number: »19«
SQL state: 22P02
Which is usually the sign that the number is an empty string or really not a number. but its not! It's a 19, why doesn't it work?
I generated the file in java,
its utf8 encoded,
database is "German_Germany.1252"
show client_encoding; => UNICODE
show server_encoding; => UTF8
SELECT pg_encoding_to_char(encoding) FROM pg_database WHERE datname = 'database1'; => UTF8
select pg_encoding_to_char(encoding), datcollate, datctype from pg_database where datname = 'database1';
Returns
"UTF8" "German_Germany.1252" "German_Germany.1252"
Thank you for your help!

Answer 1

Well, with your input, I get the same error message - just in English, not German - I did it in Vertica, Stonebraker's successor of PosgreSQL, whose CSV parser works very much the same:
COPY statelist FROM LOCAL 'st.csv' DELIMITER ',' EXCEPTIONS 'st.log';
-- error messages in "st.log"
-- COPY: Input record 1 has been rejected (Invalid integer format '"19"' for column 1 (State_Number)).
-- COPY: Input record 2 has been rejected (Invalid integer format '"19"' for column 1 (State_Number)).
-- COPY: Input record 3 has been rejected (Invalid integer format '"19"' for column 1 (State_Number)).
-- COPY: Input record 4 has been rejected (Invalid integer format '"19"' for column 1 (State_Number)).
-- COPY: Input record 5 has been rejected (Invalid integer format '"19"' for column 1 (State_Number)).
Well, that's no wonder really. "9" is a string literal, not an INTEGER literal. It's a VARCHAR(1) consisting of the numeric letter "9", not an INTEGER.
Try adding the ENCLOSED BY '"' clause. It worked for me:
COPY statelist FROM LOCAL 'st.csv' DELIMITER ',' ENCLOSED BY '"' EXCEPTIONS 'st.log';
-- out Rows Loaded
-- out -------------
-- out 5
SELECT * FROM statelist;
-- out State_Number | ElectionGroup_ID | Election_Number
-- out --------------+------------------+-----------------
-- out 19 | 5 | 10
-- out 19 | 5 | 21
-- out 19 | 5 | 238
-- out 19 | 9 | 4
-- out 19 | 15 | 1

Answer 2

Not an answer just proof that double quoted numeric values in a CSV are not the problem:
cat csv_test.csv
"19","9"
"19","5"
"19","5"
"19","15"
"19","5"
test(5432)=# \d csv_test
Table "public.csv_test"
Column | Type | Collation | Nullable | Default
--------+---------+-----------+----------+---------
col1 | integer | | |
col2 | integer | | |
select * from csv_test;
col1 | col2
------+------
(0 rows)
\copy csv_test from 'csv_test.csv' with csv;
COPY 5
select * from csv_test;
col1 | col2
------+------
19 | 9
19 | 5
19 | 5
19 | 15
19 | 5
So now maybe we can get on with answers that solve the issue.