Re: How to use long list of columns with COPY command

Hi Holger,
I appreciate your response on the Sunday.
I tried to follow PSQL link but I could not find what I want. I am finding new discoveries but the solution for my issue.

This is my command now.

\COPY bronx.TEST_GLOBAL_MCM_RAW (single_date_a, single_start_time_b, dual_part_m, dual_data_n ) FROM C:\Mohammed\Work\NGC\Apps\Bronx\Tables\Test_TestData_MCM\Test_TestData_MCM-LoadData\N541652_IN3799A0_CLD_ABMN.csv DELIMITER ',' CSV Header ;

Entire above command is run from a single line.
I need to accommodate all the below columns and few more without losing the legibility.

single_stop_time_c , single_test_action_d , single_part_type_e , single_system_id_f , single_fixture_id_g , single_operator_id_h , single_run_id_i ,

single_aux_id1_j , single_aux_id2_k , single_sn_l , dual_data_o , dual_data_p , dual_data_q , dual_data_r , dual_data_s , dual_data_t , dual_data_u ,

dual_data_v , dual_data_w , dual_data_x , dual_data_y , dual_data_z , dual_data_aa , dual_data_ab , dual_data_ac ,

dual_data_ad , dual_data_ae , dual_data_af , dual_data_ag , dual_data_ah , dual_data_ai , dual_data_aj , dual_data_ak , dual_data_al , dual_data_am , dual_data_an , dual_data_ao ,

dual_data_ap , dual_data_aq , dual_data_ar , dual_data_as , dual_data_at , dual_data_au , dual_data_av , dual_data_aw , dual_data_ax , dual_data_ay ,

dual_data_az , dual_data_ba , dual_data_bb , dual_data_bc , dual_data_bd , dual_data_be , dual_data_bf , dual_data_bg , dual_data_bh , dual_data_bi ,

dual_data_bj , dual_data_bk , dual_data_bl , dual_data_bm , dual_data_bn , dual_data_bo , dual_data_bp , dual_data_bq , dual_data_br , dual_data_bs ,

dual_data_bt , dual_data_bu , dual_data_bv , dual_data_bw , dual_data_bx ,

dual_data_by ,

dual_data_bz ,

I have tried with \n option and that is not working.
Thanks,
Sarwar

________________________________
From: Holger Jakobs
Sent: Sunday, June 11, 2023 5:54 PM
To: pgsql-admin(at)lists(dot)postgresql(dot)org
Subject: Re: How to use long list of columns with COPY command

Am 11.06.23 um 23:44 schrieb M Sarwar:
Hello,
I have some problem while loading the data using COPY command.

My environment:
Amazon RDS
Postgres - Database
PgAdmin -- with PSQL tool.
Command -- COPY

I am trying to use COPY command to load the data. Table TEST_GLOBAL_MCM_RAW has 209 columns. In COPY command, I am trying to use around 200 columns to load the data.
When I try to span COPY command into multiple lines, COPY command is not working. I am forced to use all the command in a single line and which is not legible.
Do I have any options to make the COPY command legible while using all the columns of any table.
I have tried \n and this is not working.

It is possible that someone has faced this situation in the past.

Thank you,
Sarwar

Hi Sarwar,

Page https://www.postgresql.org/docs/15/app-psql.html says:

Another way to obtain the same result as \copy ... to is to use the SQL COPY ... TO STDOUT command and terminate it with \g filename or \g |program. Unlike \copy, this method allows the command to span multiple lines; also, variable interpolation and backquote expansion can be used.

So, when loading FROM a file using \COPY (you were writing about COPY, which allows line breaks like all SQL commands), line breaks aren't allowed. It's the same for all backslash meta commands of psql.

It seems that you'll have to write the complete \COPY command in one line. It's usually quite short, unless you have to name a hell of a lot of column names.

Regards,

Holger

--
Holger Jakobs, Bergisch Gladbach, Tel. +49-178-9759012