![]() ![]() In other words, I don't want to have to go in and manually drop table attendees cascade before running the restore. I'm trying to do this using just pg_dump/pg_restore with no editing of the server db between running the two commands. Pg_restore: COPY failed for table "attendees": ERROR: duplicate key value violates unique constraint "attendees_pkey" Use the following syntax to copy the table completely including table structure and data. Pg_restore: Error from TOC entry 2409 0 56001 TABLE DATA attendees PostgreSQL supports CREATE TABLE AS to copy table structure with or without data. Results in this error: pg_restore: Error while PROCESSING TOC: I have also tried using the -clean and -data-only options, but what always gets me when I try to restore is the constraint on the table. I have tried various forms of pg_dump, using both plain-text and binary formats. Behind the scenes, both tools will invoke COPY FROM STDIN or COPY TO STDOUT, allowing you to work with files accessible to you without worrying about what the Postgres server can or can't access.How can I do this when the table has a constraint and already exists in both databases? I need to rewrite the data in the table on my server with the data in the table on my development computer. Using either tool, you will be able to specify a file path from the client-side perspective. If you're in a hurry, the above option is the simplest to get you going.Īlternatively, you can use either psql \copy command ( psql is a popular command line tool for interacting with Postgres) or the pgAdmin GUI. ![]() And if the server is running remotely, make sure that the file path is something that can be accessed by the Postgres server user. If you're on a Mac or Linux, use the '/tmp' directory - again, this is accessible by all users. The Public user home directory is readable and writeable by all users on the system. If Postgres is on your computer, and you're running Windows for example, move the file you're trying to read temporarily to 'C:\Users\Public' or write your file out to this directory. The simplest option is to change the file location to one the server does have access to. The method that yields better performance can be then followed for the live table. ![]() This newly copied table can be then tested with bulk insert for both scenarios: drop-and-recreate indexes, or dynamically updating them. Similarly, if the server is running remotely on another computer, it won't be able to access files for reading or writing on your own computer. Another option to play safe is to make a copy of the target table in the same database with existing data and indexes. ![]() It therefore can't read or write to files that, for example, reside under your own personal home directory. If the Postgres server is running locally on your computer, it will be running under a user account that's different from your own. 3,980 4 41 66 try psql>\copy 'TableName' FROM '/home/MyUser/data/TableName. The COPY command is executed from the viewpoint of the server, not the client. The most common reason permission will be denied is because the Postgres server cannot access the file at the location you specified. When you're using these commands if you're getting a "Permission Denied" error, here's the likely reason why and how to fix it. Likewise, COPY TO is used to export data from a table or a query result to a file. COPY FROM is commonly used to import data from a file (CSV, plain text, etc.) in to PostgreSQL. ![]()
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