postgresql : drop all sequences from the public schema

psql -h <ph_host> -p <pg_port> -U <pg_user> <pg_db> -t -c "select 'drop sequence \"' || relname || '\" cascade;' from pg_class where relkind='S'" | psql -h <ph_host> -p <pg_port> -U <pg_user> <pg_db>
This command drops all the sequences of the 'public' schema from the database. First, it constructs a 'drop sequence' instruction for each table found in the schema, then it pipes the result to the psql interactive command. See it scripted here : https://gist.github.com/cuberri/6868774#file-postgresql-drop-create-sh

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By: cuberri
2013-12-11 15:42:34

These Might Interest You

  • This command drops all the tables of the 'public' schema from the database. First, it constructs a 'drop table' instruction for each table found in the schema, then it pipes the result to the psql interactive command. Useful when you have to recreate your schema from scratch in development for example. I mainly use this command in conjunction with a similar command which drop all sequences as well. Example : psql -h <pg_host> -p <pg_port> -U <pg_user> <pg_db> -t -c "select 'drop table \"' || tablename || '\" cascade;' from pg_tables where schemaname='public'" | psql -h <pg_host> -p <pg_port> -U <pg_user> <pg_db> psql -h <ph_host> -p <pg_port> -U <pg_user> <pg_db> -t -c "select 'drop sequence \"' || relname || '\" cascade;' from pg_class where relkind='S'" | psql -h <ph_host> -p <pg_port> -U <pg_user> <pg_db> See it scripted here : https://gist.github.com/cuberri/6868774#file-postgresql-drop-create-sh


    0
    psql -h <pg_host> -p <pg_port> -U <pg_user> <pg_db> -t -c "select 'drop table \"' || tablename || '\" cascade;' from pg_tables where schemaname='public'" | psql -h <pg_host> -p <pg_port> -U <pg_user> <pg_db>
    cuberri · 2013-12-11 15:39:56 0
  • Postgresql specific SQL - to show count of ALL tables including relation-size (pg_relation_size = used space on filesystem) - might need a VACUUM ANALYZE before showing all counts correctly !


    1
    SELECT relname, reltuples, pg_relation_size(relname) FROM pg_class r JOIN pg_namespace n ON (relnamespace = n.oid) WHERE relkind = 'r' AND n.nspname = 'public' ORDER BY relname;
    alvinx · 2009-08-17 11:46:34 0
  • Dump 389ds schema, putting "\n " on one line with perl. You have to specify the objectclasses, attributetypes operational attributes too, otherwise they won't be dumped!


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    ldapsearch -xLLL -b "cn=schema" "(objectclass=*)" \ \* objectclasses attributetypes | perl -p0e 's/\n //g'
    ioggstream · 2012-04-04 13:31:31 1
  • After ssh into server, run this command to show all the table structure and schema. Show Sample Output


    1
    mysqldump -u<dbusername> -p<dbpassword> <databasename> --no-data --tables
    all4artz · 2009-12-20 18:41:34 0

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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