![]() Hi, I'm trying to rewrite a backup script in go that I previously wrote in bash. Please keep in mind, this is for 1st party postings only. To avoid too much noise from companies, please post job openings there. We have a monthly "Who's Hiring?" post that will stay pinned to the top of the subreddit. Do Not Post Pirated Materialĭo not post links to or instructions on how to get pirated copies of copyrighted material. We ask that you not post about closed-source / paid software that is not specifically aimed at Go developers in particular (as opposed to all developers), even if it is written in Go. This includes: - Articles about the language itself - Announcements & articles about open source Go libraries or applications - Dev tools (open source or not) specifically targeted at Go developers Posts must be of interest to Go developers and related to the Go language. Treat everyone with respect and kindness. Follow the Go Code of ConductĪs a part of the Go community, this subreddit and those who post on it should follow the tenets laid out in the Go Code of Conduct: ![]() Take responsibility for your words and actions, including their consequences, whether intended or otherwise. Avoid snarking (pithy, unproductive, sniping comments) Avoid discussing potentially offensive or sensitive issues this all too often leads to unnecessary conflict. Avoid unconstructive criticism: don't merely decry the current state of affairs offer-or at least solicit-suggestions as to how things may be improved. Be constructive.Īvoid derailing: stay on topic if you want to talk about something else, start a new conversation. When we do disagree, try to understand why. Interpret the arguments of others in good faith, do not seek to disagree. In particular, respect differences of opinion. Remember that sometimes it is best to refrain entirely from commenting. Think about how your words will be interpreted. Productive communication requires effort. (Meaning and tone can be lost in translation.) 3. Remember that people have varying communication styles and that not everyone is using their native language. If the import-table is big it may pay to increase temp_buffers temporarily for the session (first thing in the session): SET temp_buffers = '500MB' - example valueĪdd an index to the temporary table: CREATE INDEX tmp_x_id_idx ON tmp_x(id) Īnd run ANALYZE manually, since temporary tables are not covered by autovacuum / auto-analyze.Post is not in keeping with an inclusive and friendly technical atmosphere. Unlike most other meta-commands, the entire remainder of the line is always taken to be the arguments of \copy, and neither variable interpolation nor backquote expansion are performed in the arguments. Special parsing rules apply to the \copy meta-command. Normally, you need the meta-command \\ to switch between psql meta commands and SQL comands in psql, but \copy is an exception to this rule. If you are scripting this in a bash command, be sure to wrap it all in a single psql call. ![]() \copy tmp_x FROM '/absolute/path/to/file' (FORMAT csv) The scope of temporary tables is limited to a single session of a single role, so the above has to be executed in the same psql session: CREATE TEMP TABLE. ![]() Server, and no SQL superuser privileges are required. This means that fileĪccessibility and privileges are those of the local user, not the Specified file, psql reads or writes the file and routes the dataīetween the server and the local file system. SQL COPY command, but instead of the server reading or writing the The psql meta-command \copy works for any db role. Superusers, since it allows reading or writing any file that the ( The manual):ĬOPY naming a file or command is only allowed to database SQL COPY requires superuser privileges for this. If the imported table matches the table to be updated exactly, this may be convenient: CREATE TEMP TABLE tmp_x AS SELECT * FROM tbl LIMIT 0 Ĭreates an empty temporary table matching the structure of the existing table, without constraints. Like: CREATE TEMP TABLE tmp_x (id int, apple text, banana text) - but see belowĬOPY tmp_x FROM '/absolute/path/to/file' (FORMAT csv) ĭROP TABLE tmp_x - else it is dropped at end of session automatically COPY the file to a temporary staging table and update the actual table from there.
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