MySQL does not accept the \N value as null when I'm sure I've used it in the past for the same purpose.
Steps:
CREATE TABLE t (i INT NULL, name varchar(50));
Create a file called test.txt with tab separated fields:
1 John
\N Jim
In MySQL:
LOAD DATA INFILE '/var/lib/mysql-files/test.txt'
INTO TABLE t
Fields terminated BY "\t"
Escaped by ''
Lines terminated BY "\r\n";
Error:
ERROR 1366 (HY000): Incorrect integer value: '\N' for column 'i' at row 2
I should have done this:
LOAD DATA infile '/var/lib/mysql-files/test.txt'
INTO TABLE t
fields terminated BY "\t"
Escaped by '\\'
lines terminated BY "\r\n";
Related
normal insert:
insert into tfreeze(id,s) values(1,'foo');
I tried the following ways, both not working:
copy tfreeze(id,s ) from stdin;
1 foo
\.
copy tfreeze(id,s ) from stdin;
1 'foo'
\.
Only a few questions related from stdin in stackoverflow. https://stackoverflow.com/search?q=Postgres+Insert+statements+from+stdin
--
error code:
ERROR: 22P02: invalid input syntax for type integer: "1 foo"
CONTEXT: COPY tfreeze, line 1, column id: "1 foo"
LOCATION: pg_strtoint32, numutils.c:320
I get code from this(https://postgrespro.ru/education/books/internals) book.
code source: https://prnt.sc/eEsRZ5AK-tjQ
So far I tried:
1, foo, 1\t'foo', 1\tfoo
First, you have to use psql for that (you are already doing that).
You get that error because you use the default text format, which requires that the values are separated by tabulator characters (ASCII 9).
I recommend that you use the CSV format and separate the values with commas:
COPY tfreeze (id, s) FROM STDIN (FORMAT 'csv', FREEZE);
1,foo
\.
I'm trying to load csv data into snowflake using snowflake copy. CSV column separator is pipe character (|). One of the columns in the input csv has | character in data which is escaped by backslash . The datatype in the target snowflake database is VARCHAR(n). With the addition of the escape character(\) in the data the data size exceeds the target column definition size which causes copy to fail.
Is there a way I can remove the escape character (\) from the data before loaded into the table?
copy into table_name from 's3path.csv.gz' file_format=(type = 'csv', field_optionally_enclosed_by ='"' escape_unenclosed_field = NONE empty_field_as_null = true escape ='\' field_delimter ='|' skip_header=1 NULL_IF = ('\\N', '', '\N')) ON_ERROR ='ABORT_STATEMENT' PURGE = FALSE
Sample data that causes the failure: "Data 50k | $200K "
In PostgreSQL psql, how to make \copy command ignore empty lines in input file?
Here is the code to reproduce it,
create table t1(
n1 int
);
echo "1
2
" > m.csv
psql> \copy t1(n1) FROM 'm.csv' (delimiter E'\t', NULL 'NULL', FORMAT CSV, HEADER false);
ERROR: invalid input syntax for integer: ""
CONTEXT: COPY t1, line 3, column n1: ""
There is an empty line in file m.csv
cat m.csv
1
2
<< empty line
PostgreSQL COPY is very strict, so there is not possibility to start COPY in tolerant mode. If it is possible, you can use COPY FROM PROGRAM
[pavel#nemesis ~]$ cat ~/data.csv
10,20,30
40,50,60
70,80,90
psql -c "\copy f from program ' sed ''/^\s*$/d'' ~/data.csv ' csv" postgres
I'm trying to copy txt file to postgres database but I'm getting an error as follows:
[22P02] ERROR: invalid input syntax for integer: " "
Where: COPY eurotax_consumer, line 1, column tcomanmi: " "
But I'm using WITH NULL AS '' as the docs says:
COPY eurotax_consumer FROM 'path/to/file.txt' WITH NULL AS '';
What am I doing wrong?
You are trying to enter a string into an INT column. Can you set the destination column to a string type the do explicit conversion after insertion ?
I would like to import a csv file, which has multiple occurrences of missing values. I recoded them into NULL and tried to import the file as. I suppose that my attributes which include the NULLS are character values. However transforming them to numeric is bit complicated. Therefore I would like to import all of my table as:
\copy player_allstar FROM '/Users/Desktop/Rdaten/Data/player_allstar.csv' DELIMITER ';' CSV WITH NULL AS 'NULL' ';' HEADER
There must be a syntax error. But I tried different combinations and always get:
ERROR: syntax error at or near "WITH NULL"
LINE 1: COPY player_allstar FROM STDIN DELIMITER ';' CSV WITH NULL ...
I also tried:
\copy player_allstar FROM '/Users/Desktop/Rdaten/Data/player_allstar.csv' WITH(FORMAT CSV, DELIMITER ';', NULL 'NULL', HEADER);
and get:
ERROR: invalid input syntax for integer: "NULL"
CONTEXT: COPY player_allstar, line 2, column dreb: "NULL"
I suppose it is caused by preprocessing with R. The Table came with NAs so I change them to:
data[data==NA] <- "NULL"
I`m not aware of a different way chaning to NULL. I think this causes strings. Is there a different way to preprocess and keep the NAs(as NULLS in postgres of course)?
Sample:
pts dreb oreb reb asts stl
11 NULL NULL 8 3 NULL
4 5 3 8 2 1
3 NULL NULL 1 1 NULL
data type is integer
Given /tmp/sample.csv:
pts;dreb;oreb;reb;asts;stl
11;NULL;NULL;8;3;NULL
4;5;3;8;2;1
3;NULL;NULL;1;1;NULL
then with a table like:
CREATE TABLE player_allstar (pts integer, dreb integer, oreb integer, reb integer, asts integer, stl integer);
it works for me:
\copy player_allstar FROM '/tmp/sample.csv' WITH (FORMAT CSV, DELIMITER ';', NULL 'NULL', HEADER);
Your syntax is fine, the problem seem to be in the formatting of your data. Using your syntax I was able to load data with NULLs successfully:
mydb=# create table test(a int, b text);
CREATE TABLE
mydb=# \copy test from stdin WITH(FORMAT CSV, DELIMITER ';', NULL 'NULL', HEADER);
Enter data to be copied followed by a newline.
End with a backslash and a period on a line by itself.
>> col a header;col b header
>> 1;one
>> NULL;NULL
>> 3;NULL
>> NULL;four
>> \.
mydb=# select * from test;
a | b
---+------
1 | one
|
3 |
| four
(4 rows)
mydb=# select * from test where a is null;
a | b
---+------
|
| four
(2 rows)
In your case you can substitute to NULL 'NA' in the copy command, if the original value is 'NA'.
You should make sure that there's no spaces around your data values. For example, if your NULL is represented as NA in your data and fields are delimited with semicolon:
1;NA <-- good
1 ; NA <-- bad
1<tab>NA <-- bad
etc.