El 10/10/14 a las 14:50, vibhor.kumar@xxxxxxxxxxxxxxxx escibió:
On Oct 10, 2014, at 1:27 PM, Leonardo M. Ramé <l.rame@xxxxxxxxxxx> wrote:
Hi, today I needed to re-create certain records deleted from a mysql database, so I restored an old backup, opened a terminal and logged in to the old database using the "mysql" command line utility, then opened a new terminal with mysql connected to the production database. Then did a "select * from table where id=xxx \G;" to display a record, then, on the other terminal I had to write "insert into table(field1, field2,...,fieldN) values(...);" for each record.
While doing that I tought of a neat feature that psql could provide, that is something like "\insert for select * from table where id=xxx;" this should create the insert command for the requested query.
You can do something like given below:
CREATE TABLE temp_generate_inserts AS SELECT * FROM table id=xx
Then use pg_dump --column-inserts -t temp_generate_inserts db1|psql db2
and later you can drop temp_generate_inserts table.
With this you can also explore dblink_build_sql_insert function which comes with dblink module:
http://www.postgresql.org/docs/9.3/interactive/contrib-dblink-build-sql-insert.html
Nice!, I didn't know the create table...as select... command.
Still I think optimal way of doing this will be to use COPY command something like given below:psql -c “COPY (SELECT * FROM table WHERE id=xxx) TO STDOUT” -d db1|psql -c “COPY tablename FROM STDIN” -d db2
with this, you can also explore postgresql_fdw if that helps.
Thanks & Regards, Vibhor Kumar (EDB) EnterpriseDB Corporation The Postgres Database Company Blog:http:// vibhork.blogspot.com
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