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      • How can I take only PostgreSQL functions & procedure backup

      How can I take only PostgreSQL functions & procedure backup

      • Posted by 2ndnijam
      • Categories Blog
      • Date January 8, 2019
      • Comments 0 comment

      You can’t take PostgreSQL functions backup like wise as tables in postgresql.

      You can use the below query to get all the function definitions from following script.

      # Config:
      DB="LC"
      U=enterprisedb
      export PGPASSWORD="tcs@345"
      export PGPORT="5544"
      export PGHOST="10.0.4.101"
      nijam="/home/Admin/"
      logfile="nijam33".sql
      
      /opt/edb/as9.6/bin/psql -d $DB -U $U -t -c "SELECT FORMAT(
      '\COPY (SELECT regexp_split_to_table(regexp_replace(pg_get_functiondef(%s), ''\t'', ''   '', ''g''), ''\n'')) TO  /home/Admin/2ndquadrant.in/LC/schemas/amb/functions_procedures/amb.%s',
      pp.oid,
      pp.proname
      )
      from pg_proc pp
      inner join pg_namespace pn on (pp.pronamespace = pn.oid)
      inner join pg_language pl on (pp.prolang = pl.oid)
      WHERE PN.NSPNAME = 'amb'" >>$nijam/$logfile 2>&1
      /opt/edb/as9.6/bin/psql -d $DB -U $U -t -c "\i /home/Admin/nijam33.sql"
      # Successfully completed the procedure & function backup

      You can also take functions backup through Linux command line.

      # First, make a dump of the database without data (-s)

      pg_dump -h localhost -u username -fc -s -f db_dump dbname

      # Create a list of the functions

      pg_restore -l db_dump | grep FUNCTION > function_list

      # Restore the functions in an other database

      pg_restore -h localhost -u username -d other-dbname -l function_list db_dump

       

      FOR IT SUPPORT

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