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31 строка
1.2 KiB
Plaintext
31 строка
1.2 KiB
Plaintext
https://www.postgresql.org/docs/current/sql-copy.html
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2021
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https://blog.skyvia.com/complete-guide-on-how-to-import-and-export-csv-files-to-postgresql/
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2020
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https://techcommunity.microsoft.com/t5/azure-database-for-postgresql/moving-data-with-postgresql-copy-and-copy-commands/ba-p/1561266
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COPY is server based,
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\COPY is client based (\COPY is a psql feature)
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qa
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https://dba.stackexchange.com/questions/190780/parsing-copys-binary-format-to-access-a-tsrange
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!!!
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????
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https://zaiste.net/databases/postgresql/howtos/howto-export-postgresql-query-output-csv/
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between dbs
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https://www.endpointdev.com/blog/2013/11/copying-rows-between-postgresql
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psql source_database -c 'COPY table TO stdout' | psql target_database -c 'COPY table FROM stdin'
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with dblinks
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https://stackoverflow.com/questions/36476192/postgresql-copy-transfer-data-from-one-database-to-another
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create extension dblink;
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dblink('yourdbname', 'your query')
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insert into t(a, b, c)
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select a, b, c from dblink('host=xxx user=xxx password=xxx dbname=xxx', 'select a, b, c from t')
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as x(a integer, b integer, c integer)
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csv samples
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psql-some -c "copy (select * from <table> ...) to stdout with csv header;" > ~/Downloads/file.csv
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cat a.csv | psql-some -c "copy <table> from stdin with csv header"
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