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--- resources [2011/11/15 15:43]
k2patel [Getting Connection Information]
+++ resources [2020/08/10 02:35] (current)
@@ Line 62: / Line 62: @@
 == Read Only User ==
-This only allow user to access database but can not write to it.
+This only allow user to access database but can not write to it.\\
+<note important>Before you grant make sure you selected database else it could not work</note>
 <code sql>
@@ Line 69: / Line 70: @@
 GRANT SELECT ON ALL TABLES IN SCHEMA public TO carol;
 </code>
+<note tip>If there is ERROR : pg_dump: The command was: LOCK SEQUENCE public.client_group IN ACCESS SHARE MODE See next Section </note>
+<code sql>
+\dp public.client_group; # check permission
+GRANT SELECT ON ALL SEQUENCES IN SCHEMA public TO backup;
+</code>
+<note tip>Even you can use above commands to create backup user for specific database.</note>
 ==== Getting Connection Information ====
@@ Line 78: / Line 88: @@
 Following is the available procedures / variable.
-Name
+<code text>
-Return Type
+Name				Description
-Description
+current_catalog			name of current database (called "catalog" in the SQL standard)
-current_catalog
+current_database()		name of current database
-name
+current_schema[()]		name of current schema
-name of current database (called "catalog" in the SQL standard)
+current_schemas(boolean)	names of schemas in search path, optionally including implicit schemas
-current_database()
+current_user			user name of current execution context
-name
+current_query()			text of the currently executing query, as submitted by the client (might contain more than one statement)
-name of current database
+pg_backend_pid()		Process ID of the server process attached to the current session
-current_schema[()]
+pg_listening_channels()		channel names that the session is currently listening on
-name
+inet_client_addr()		address of the remote connection
-name of current schema
+inet_client_port()		port of the remote connection
-current_schemas(boolean)
+inet_server_addr()		address of the local connection
-name[]
+inet_server_port()		port of the local connection
-names of schemas in search path, optionally including implicit schemas
+pg_my_temp_schema()		OID of session's temporary schema, or 0 if none
-current_user
+pg_is_other_temp_schema(oid)	boolean	is schema another session's temporary schema?
-name
+pg_postmaster_start_time()	server start time
-user name of current execution context
+pg_conf_load_time()		configuration load time
-current_query()
+session_user			session user name
-text
+user				equivalent to current_user
-text of the currently executing query, as submitted by the client (might contain more than one statement)
+version()			PostgreSQL version information
-pg_backend_pid()
+</code>
-int
-Process ID of the server process attached to the current session
-pg_listening_channels()
-setof text
-channel names that the session is currently listening on
-inet_client_addr()
-inet
-address of the remote connection
-inet_client_port()
-int
-port of the remote connection
-inet_server_addr()
-inet
-address of the local connection
-inet_server_port()
-int
-port of the local connection
-pg_my_temp_schema()
-oid
-OID of session's temporary schema, or 0 if none
-pg_is_other_temp_schema(oid)
-boolean
-is schema another session's temporary schema?
-pg_postmaster_start_time()
-timestamp with time zone
-server start time
-pg_conf_load_time()
-timestamp with time zone
-configuration load time
-session_user
-name
-session user name
-user
-name
-equivalent to current_user
-version()
-text
-PostgreSQL version information

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