Обсуждение: Table column headings PgAmin4
First, please note that PgAdmin4 is just an interface to PostgreSQL,
so it is very helpful if you state the actual version of PostgreSQL and O/S you are
working with.
IE: SELECT version(); >Can the column headings be taken from the first line of the csv file?
Yes.
>Additionally, I have tried to do this with smaller number of columns with
>CREATE table but the column headings appear in a different order to what is
>in the csv file (that cannot be edited
What you are trying to do can only be done with a SQL statement (IE: Query Tool)
So you need to specify the actual columns and order you will be providing.
https://www.postgresql.org/docs/9.6/static/sql-insert.html
EG:
CREATE TABLE many_col (
a integer,
b varchar(10),
c text,
d varchar(5),
e integer,
f text,
CONSTRAINT many_col PRIMARY KEY (a)
);
INSERT INTO many_col
( b, c, a, e)
VALUES
('first b', 'first text value', 1, 11),
)'secon b', 'first text value', 2, 22);
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On Wednesday, February 7, 2018, 10:06:49 AM EST, TedJones <ted@mentra.co.uk> wrote:
I am quite new to PostgreSQL and I am having difficulty with the following:
I am trying to input a csv file into a table that has a very large number of
columns. This means that it is impractical to create a table and specify the
name of all the columns. Can the column headings be taken from the first
line of the csv file?
Additionally, I have tried to do this with smaller number of columns with
CREATE table but the column headings appear in a different order to what is
in the csv file (that cannot be edited). I then cannot edit (cut and paste
as you would expect!) the SQL to change the order of the columns. Surely
there must be a way of doing this!! I have no control over the input csv
files that contain the data.
--
You can use builtin COPY tool to load the CSV data into the table but the destination table must be present before you load CSV.
COPY your_table(column_1, column_2, column_3...column_N)
FROM 'C:\tmp\mydata.csv' DELIMITER ',' CSV HEADER;
If you wish then you can try third party tool called pgfutter.
--
Regards,
On Wed, Feb 7, 2018 at 8:18 PM, TedJones <ted@mentra.co.uk> wrote:
I am quite new to PostgreSQL and I am having difficulty with the following:
I am trying to input a csv file into a table that has a very large number of
columns. This means that it is impractical to create a table and specify the
name of all the columns. Can the column headings be taken from the first
line of the csv file?
Additionally, I have tried to do this with smaller number of columns with
CREATE table but the column headings appear in a different order to what is
in the csv file (that cannot be edited). I then cannot edit (cut and paste
as you would expect!) the SQL to change the order of the columns. Surely
there must be a way of doing this!! I have no control over the input csv
files that contain the data.
--
Sent from: http://www.postgresql-archive.org/PostgreSQL-pgadmin- support-f2191615.html
Hi Murtuza
Thank you for your reply. Unfortunately it is not practical to use this approach when there may be 100s of columns! I will look at pgfutter.
regards
Ted Jones
----- Original Message -----From: Murtuza ZabuawalaTo: TedJonesCc: pgAdmin SupportSent: Wednesday, February 07, 2018 5:33 PMSubject: Re: Table column headings PgAmin4You can use builtin COPY tool to load the CSV data into the table but the destination table must be present before you load CSV.COPY your_table(column_1, column_2, column_3...column_N)FROM 'C:\tmp\mydata.csv' DELIMITER ',' CSV HEADER;If you wish then you can try third party tool called pgfutter.--Regards,On Wed, Feb 7, 2018 at 8:18 PM, TedJones <ted@mentra.co.uk> wrote:I am quite new to PostgreSQL and I am having difficulty with the following:
I am trying to input a csv file into a table that has a very large number of
columns. This means that it is impractical to create a table and specify the
name of all the columns. Can the column headings be taken from the first
line of the csv file?
Additionally, I have tried to do this with smaller number of columns with
CREATE table but the column headings appear in a different order to what is
in the csv file (that cannot be edited). I then cannot edit (cut and paste
as you would expect!) the SQL to change the order of the columns. Surely
there must be a way of doing this!! I have no control over the input csv
files that contain the data.
--
Sent from: http://www.postgresql-archive.org/PostgreSQL-pgadmin- support-f2191615.html
Hi DavidI'm sorry but I'm not sure what you mean! Can you give me a simple example? Thanks.
Something like in the attached image.
Вложения
Ted and David,
Howdy! I too desperately crave this feature in pgAdmin. In light of the fact that there are now three of us interested in this, I have created the feature request in RedMine: https://redmine.postgresql.org/issues/3092
Hopefully, this helps the cause...
On Wed, Feb 7, 2018 at 12:53 PM, David G. Johnston <david.g.johnston@gmail.com> wrote:
Hi DavidI'm sorry but I'm not sure what you mean! Can you give me a simple example? Thanks.Something like in the attached image.
Assumptions validated by consistent data from actual experiments enable the creation of real value.
Sheldon E. Strauch
Data Architect, Data Services
O 312-676-1556
M 224-723-3878
Enova International, Inc.
This transmission is confidential and may be privileged or proprietary. If you are not the intended recipient, you are not authorized to use the information in this transmission in any way. Please inform the sender immediately if you have received this transmission in error and permanently delete and destroy the original and any copies of the information.
Вложения
Hi, all,
My favorite solution to this issue is to use the very handy Python library csvkit: https://csvkit.readthedocs.io/en/1.0.2/
It includes the command line utility csvsql (https://csvkit.readthedocs.io/en/1.0.2/scripts/csvsql.html), which will read a CSV and generate a CREATE TABLE statement. It does a fairly good job of inferring data types from the column values in the CSV.
It works with PostgreSQL and other DBs as well.
Best,
Anthony DeBarros
On February 7, 2018 at 3:07:21 PM, Strauch, Sheldon (sstrauch@enova.com) wrote:
Ted and David,
Howdy! I too desperately crave this feature in pgAdmin. In light of the fact that there are now three of us interested in this, I have created the feature request in RedMine: https://redmine.postgresql.org/issues/3092
Hopefully, this helps the cause...
On Wed, Feb 7, 2018 at 12:53 PM, David G. Johnston <david.g.johnston@gmail.com> wrote:
On Wed, Feb 7, 2018 at 11:47 AM, Ted Jones <ted@mentra.co.uk> wrote:Hi DavidI'm sorry but I'm not sure what you mean! Can you give me a simple example? Thanks.Something like in the attached image.
Assumptions validated by consistent data from actual experiments enable the creation of real value.
Sheldon E. Strauch
Data Architect, Data Services
O 312-676-1556
M 224-723-3878
Enova International, Inc.
This transmission is confidential and may be privileged or proprietary. If you are not the intended recipient, you are not authorized to use the information in this transmission in any way. Please inform the sender immediately if you have received this transmission in error and permanently delete and destroy the original and any copies of the information.