Having trouble importing CSV file into PostgreSQL - postgresql

Question

I am a beginner with PostgreSQL, I am trying to import a csv file into pgAdmin4, but seem to be having some trouble. I have the CSV file saved on my desktop and there is no header in the CSV file. Here is what my query currently looks like,
COPY opioid_csv(Substance, Source, Specific_Measure, Type_event, Region, PRUID, Time_Period, Year_Quarter, Aggregator, Disaggregator, Unit, Value)
FROM 'Users/myusername/Desktop/opioid_csv.csv'
DELIMITER ','
I have created a table with all the column names as well but I am getting the following error:
ERROR: relation "opioid_csv" does not exist SQL state: 42P01

Answer 1

Try, using psql:
postgres=# \dt *.opioid_csv
List of relations
Schema | Name | Type | Owner
--------------+------------+-------+-------
marcothesane | opioid_csv | table | marco
(1 row)
Very probably, if you did succeed to create your opioid_csv table, you created it in another schema than public. You would have to put the schema (marcothesane in my example) before the table name: use marcothesane.opioid_csv instead of just opioid.csv
Let me try to do it with a CSV file of mine:
marco ~/1/Vertica/supp $ head test.csv
id,text
1,1VIAgFg
2,IfPLHbT
3,EWOmXAx
4,zl8paoh
5,9EpQ9Kx
6,ZpagcCh
7,6xoVoit
8,mCniu1U
9,euieQZa
Matching table DDL - using my own d2l DDL inferrer:
marco ~/1/Vertica/supp $ d2lm -coldelcomma test.csv | tee test.ddl.sql
CREATE TABLE IF NOT EXISTS test (
id INTEGER NOT NULL
, text CHAR(7) NOT NULL
);
Then, I run psql with that newly generated script:
marco ~/1/Vertica/supp $ psql -af test.ddl.sql
CREATE TABLE IF NOT EXISTS test (
id INTEGER NOT NULL
, text CHAR(7) NOT NULL
);
CREATE TABLE
Then, as I have a header line in my file, I COPY with csv header:
marco ~/1/Vertica/supp $ psql -c "copy test from '/Users/marco/1/Vertica/supp/test.csv' delimiter ',' csv header"
COPY 50000
marco ~/1/Vertica/supp $ psql -c "select count(*) from test"
count
-------
50000
What is different from what you do?