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-$PostgreSQL: pgsql/contrib/dblink/doc/execute,v 1.4 2006/03/11 04:38:29 momjian Exp $
-==================================================================
-Name
-
-dblink_exec -- Executes an UPDATE/INSERT/DELETE on a remote database
-
-Synopsis
-
-dblink_exec(text connstr, text sql [, bool fail_on_error])
-dblink_exec(text connname, text sql [, bool fail_on_error])
-dblink_exec(text sql [, bool fail_on_error])
-
-Inputs
-
-  connname
-  connstr
-
-    If two arguments are present, the first is first assumed to be a specific
-    connection name to use. If the name is not found, the argument is then
-    assumed to be a valid connection string, of standard libpq format,
-    e.g.: "hostaddr=127.0.0.1 dbname=mydb user=postgres password=mypasswd"
-
-    If only one argument is used, then the unnamed connection is used.
-
-  sql
-
-    sql statement that you wish to execute on the remote host, e.g.:
-       insert into foo values(0,'a','{"a0","b0","c0"}');
-
-  fail_on_error
-
-    If true (default when not present) then an ERROR thrown on the remote side
-    of the connection causes an ERROR to also be thrown locally. If false, the
-    remote ERROR is locally treated as a NOTICE, and the return value is set
-    to 'ERROR'.
-
-Outputs
-
-  Returns status of the command, or 'ERROR' if the command failed.
-
-Notes
-  1) dblink_open starts an explicit transaction. If, after using dblink_open,
-     you use dblink_exec to change data, and then an error occurs or you use
-     dblink_disconnect without a dblink_close first, your change *will* be
-     lost.
-
-Example usage
-
-select dblink_connect('dbname=dblink_test_slave');
- dblink_connect
-----------------
- OK
-(1 row)
-
-select dblink_exec('insert into foo values(21,''z'',''{"a0","b0","c0"}'');');
-   dblink_exec
------------------
- INSERT 943366 1
-(1 row)
-
-select dblink_connect('myconn','dbname=regression');
- dblink_connect
-----------------
- OK
-(1 row)
-
-select dblink_exec('myconn','insert into foo values(21,''z'',''{"a0","b0","c0"}'');');
-   dblink_exec
-------------------
- INSERT 6432584 1
-(1 row)
-
-select dblink_exec('myconn','insert into pg_class values (''foo'')',false);
-NOTICE:  sql error
-DETAIL:  ERROR:  null value in column "relnamespace" violates not-null constraint
-
- dblink_exec
--------------
- ERROR
-(1 row)