user is a reserved word and it’s usually not a good idea use reserved words for identifiers (tables, columns). If you insist on doing that you have to put the table name in double quotes: create table “user” (…); But then you always need to use double quotes when referencing the table. Additionally the table … Read more
EXECUTE … USING only works in PL/PgSQL – ie within functions or DO blocks written in the PL/PgSQL language. It does not work in plain SQL; the EXECUTE in plain SQL is completely different, for executing prepared statements. You cannot use dynamic SQL directly in PostgreSQL’s SQL dialect. Compare: PL/PgSQL’s EXECUTE … USING; to SQL’s … Read more
cd /etc/postgresql/9.x/main/ open file named postgresql.conf sudo vi postgresql.conf add this line to that file listen_addresses=”*” then open file named pg_hba.conf sudo vi pg_hba.conf and add this line to that file host all all 0.0.0.0/0 md5 It allows access to all databases for all users with an encrypted password restart your server sudo /etc/init.d/postgresql restart
You may wish to read a summary of the ways to authenticate to PostgreSQL. To answer your question, there are several ways provide a password for password-based authentication: Via the password prompt. Example: psql -h uta.biocommons.org -U foo Password for user foo: In a pgpass file. See libpq-pgpass. Format: <host>:<port>:<database>:<user>:<password> With the PGPASSWORD environment variable. … Read more
pg_dump -t ‘schema-name.table-name’ –schema-only database-name More info – in the manual.
GRANT on the database is not what you need. Grant on the tables directly. Granting privileges on the database mostly is used to grant or revoke connect privileges. This allows you to specify who may do stuff in the database if they have sufficient other permissions. You want instead: GRANT ALL PRIVILEGES ON TABLE side_adzone … Read more
If you use Libpq binding for respective language, according to its documentation URI is formed as follows: postgresql://[user[:password]@][netloc][:port][/dbname][?param1=value1&…] Here are examples from same document postgresql:// postgresql://localhost postgresql://localhost:5432 postgresql://localhost/mydb postgresql://user@localhost postgresql://user:secret@localhost postgresql://other@localhost/otherdb?connect_timeout=10&application_name=myapp postgresql://localhost/mydb?user=other&password=secret
Option A If your install isn’t already damaged, you can drop unwanted PostgreSQL servers (“clusters”) using pg_dropcluster. Use that in preference to a full purge and reinstall if you just want to restart with a fresh PostgreSQL instance. $ pg_lsclusters Ver Cluster Port Status Owner Data directory Log file 11 main 5432 online postgres /var/lib/postgresql/11/main … Read more
In PostgreSQL, you can use the \connect meta-command of the client tool psql: \connect DBNAME or in short: \c DBNAME
It’s actually more complex than that. The null bitmap needs one bit per column in the row, rounded up to full bytes. It is only there if the actual row includes at least one NULL value and is fully allocated in that case. NOT NULL constraints do not directly affect that. (Of course, if all … Read more