500 lines
16 KiB
Plaintext
500 lines
16 KiB
Plaintext
CREATE EXTENSION dblink;
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CREATE TABLE foo(f1 int, f2 text, f3 text[], primary key (f1,f2));
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INSERT INTO foo VALUES (0,'a','{"a0","b0","c0"}');
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INSERT INTO foo VALUES (1,'b','{"a1","b1","c1"}');
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INSERT INTO foo VALUES (2,'c','{"a2","b2","c2"}');
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INSERT INTO foo VALUES (3,'d','{"a3","b3","c3"}');
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INSERT INTO foo VALUES (4,'e','{"a4","b4","c4"}');
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INSERT INTO foo VALUES (5,'f','{"a5","b5","c5"}');
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INSERT INTO foo VALUES (6,'g','{"a6","b6","c6"}');
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INSERT INTO foo VALUES (7,'h','{"a7","b7","c7"}');
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INSERT INTO foo VALUES (8,'i','{"a8","b8","c8"}');
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INSERT INTO foo VALUES (9,'j','{"a9","b9","c9"}');
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-- misc utilities
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-- list the primary key fields
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SELECT *
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FROM dblink_get_pkey('foo');
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-- build an insert statement based on a local tuple,
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-- replacing the primary key values with new ones
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SELECT dblink_build_sql_insert('foo','1 2',2,'{"0", "a"}','{"99", "xyz"}');
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-- too many pk fields, should fail
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SELECT dblink_build_sql_insert('foo','1 2 3 4',4,'{"0", "a", "{a0,b0,c0}"}','{"99", "xyz", "{za0,zb0,zc0}"}');
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-- build an update statement based on a local tuple,
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-- replacing the primary key values with new ones
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SELECT dblink_build_sql_update('foo','1 2',2,'{"0", "a"}','{"99", "xyz"}');
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-- too many pk fields, should fail
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SELECT dblink_build_sql_update('foo','1 2 3 4',4,'{"0", "a", "{a0,b0,c0}"}','{"99", "xyz", "{za0,zb0,zc0}"}');
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-- build a delete statement based on a local tuple,
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SELECT dblink_build_sql_delete('foo','1 2',2,'{"0", "a"}');
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-- too many pk fields, should fail
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SELECT dblink_build_sql_delete('foo','1 2 3 4',4,'{"0", "a", "{a0,b0,c0}"}');
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-- retest using a quoted and schema qualified table
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CREATE SCHEMA "MySchema";
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CREATE TABLE "MySchema"."Foo"(f1 int, f2 text, f3 text[], primary key (f1,f2));
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INSERT INTO "MySchema"."Foo" VALUES (0,'a','{"a0","b0","c0"}');
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-- list the primary key fields
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SELECT *
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FROM dblink_get_pkey('"MySchema"."Foo"');
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-- build an insert statement based on a local tuple,
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-- replacing the primary key values with new ones
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SELECT dblink_build_sql_insert('"MySchema"."Foo"','1 2',2,'{"0", "a"}','{"99", "xyz"}');
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-- build an update statement based on a local tuple,
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-- replacing the primary key values with new ones
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SELECT dblink_build_sql_update('"MySchema"."Foo"','1 2',2,'{"0", "a"}','{"99", "xyz"}');
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-- build a delete statement based on a local tuple,
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SELECT dblink_build_sql_delete('"MySchema"."Foo"','1 2',2,'{"0", "a"}');
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-- regular old dblink
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SELECT *
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FROM dblink('host=127.0.0.1 port=portIp dbname=regression user=userName password=Test@123','SELECT * FROM foo') AS t(a int, b text, c text[])
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WHERE t.a > 7;
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-- should generate "connection not available" error
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SELECT *
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FROM dblink('SELECT * FROM foo') AS t(a int, b text, c text[])
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WHERE t.a > 7;
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-- create a persistent connection
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SELECT dblink_connect('host=127.0.0.1 port=portIp dbname=regression user=userName password=Test@123');
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-- use the persistent connection
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SELECT *
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FROM dblink('SELECT * FROM foo') AS t(a int, b text, c text[])
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WHERE t.a > 7;
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-- open a cursor with bad SQL and fail_on_error set to false
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SELECT dblink_open('rmt_foo_cursor','SELECT * FROM foobar',false);
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-- reset remote transaction state
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SELECT dblink_exec('ABORT');
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-- open a cursor
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SELECT dblink_open('rmt_foo_cursor','SELECT * FROM foo');
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-- close the cursor
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SELECT dblink_close('rmt_foo_cursor',false);
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-- open the cursor again
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SELECT dblink_open('rmt_foo_cursor','SELECT * FROM foo');
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-- fetch some data
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SELECT *
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FROM dblink_fetch('rmt_foo_cursor',4) AS t(a int, b text, c text[]);
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SELECT *
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FROM dblink_fetch('rmt_foo_cursor',4) AS t(a int, b text, c text[]);
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-- this one only finds two rows left
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SELECT *
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FROM dblink_fetch('rmt_foo_cursor',4) AS t(a int, b text, c text[]);
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-- intentionally botch a fetch
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SELECT *
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FROM dblink_fetch('rmt_foobar_cursor',4,false) AS t(a int, b text, c text[]);
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-- reset remote transaction state
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SELECT dblink_exec('ABORT');
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-- close the wrong cursor
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SELECT dblink_close('rmt_foobar_cursor',false);
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-- should generate 'cursor "rmt_foo_cursor" not found' error
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SELECT *
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FROM dblink_fetch('rmt_foo_cursor',4) AS t(a int, b text, c text[]);
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-- this time, 'cursor "rmt_foo_cursor" not found' as a notice
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SELECT *
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FROM dblink_fetch('rmt_foo_cursor',4,false) AS t(a int, b text, c text[]);
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-- close the persistent connection
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SELECT dblink_disconnect();
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-- should generate "connection not available" error
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SELECT *
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FROM dblink('SELECT * FROM foo') AS t(a int, b text, c text[])
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WHERE t.a > 7;
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-- put more data into our slave table, first using arbitrary connection syntax
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-- but truncate the actual return value so we can use diff to check for success
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SELECT substr(dblink_exec('host=127.0.0.1 port=portIp dbname=regression user=userName password=Test@123','INSERT INTO foo VALUES(10,''k'',''{"a10","b10","c10"}'')'),1,6);
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-- create a persistent connection
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SELECT dblink_connect('host=127.0.0.1 port=portIp dbname=regression user=userName password=Test@123');
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-- put more data into our slave table, using persistent connection syntax
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-- but truncate the actual return value so we can use diff to check for success
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SELECT substr(dblink_exec('INSERT INTO foo VALUES(11,''l'',''{"a11","b11","c11"}'')'),1,6);
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-- let's see it
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SELECT *
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FROM dblink('SELECT * FROM foo') AS t(a int, b text, c text[]);
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-- bad remote select
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SELECT *
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FROM dblink('SELECT * FROM foobar',false) AS t(a int, b text, c text[]);
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-- change some data
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SELECT dblink_exec('UPDATE foo SET f3[2] = ''b99'' WHERE f1 = 11');
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-- let's see it
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SELECT *
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FROM dblink('SELECT * FROM foo') AS t(a int, b text, c text[])
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WHERE a = 11;
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-- botch a change to some other data
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SELECT dblink_exec('UPDATE foobar SET f3[2] = ''b99'' WHERE f1 = 11',false);
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-- delete some data
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SELECT dblink_exec('DELETE FROM foo WHERE f1 = 11');
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-- let's see it
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SELECT *
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FROM dblink('SELECT * FROM foo') AS t(a int, b text, c text[])
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WHERE a = 11;
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-- close the persistent connection
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SELECT dblink_disconnect();
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--
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-- tests for the new named persistent connection syntax
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--
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-- should generate "missing "=" after "myconn" in connection info string" error
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SELECT *
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FROM dblink('myconn','SELECT * FROM foo') AS t(a int, b text, c text[])
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WHERE t.a > 7;
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-- create a named persistent connection
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SELECT dblink_connect('myconn','host=127.0.0.1 port=portIp dbname=regression user=userName password=Test@123');
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-- use the named persistent connection
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SELECT *
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FROM dblink('myconn','SELECT * FROM foo') AS t(a int, b text, c text[])
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WHERE t.a > 7;
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-- use the named persistent connection, but get it wrong
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SELECT *
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FROM dblink('myconn','SELECT * FROM foobar',false) AS t(a int, b text, c text[])
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WHERE t.a > 7;
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-- create a second named persistent connection
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-- should error with "duplicate connection name"
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SELECT dblink_connect('myconn','host=127.0.0.1 port=portIp dbname=regression user=userName password=Test@123');
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-- create a second named persistent connection with a new name
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SELECT dblink_connect('myconn2','host=127.0.0.1 port=portIp dbname=regression user=userName password=Test@123');
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-- use the second named persistent connection
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SELECT *
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FROM dblink('myconn2','SELECT * FROM foo') AS t(a int, b text, c text[])
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WHERE t.a > 7;
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-- close the second named persistent connection
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SELECT dblink_disconnect('myconn2');
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-- open a cursor incorrectly
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SELECT dblink_open('myconn','rmt_foo_cursor','SELECT * FROM foobar',false);
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-- reset remote transaction state
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SELECT dblink_exec('myconn','ABORT');
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-- test opening cursor in a transaction
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SELECT dblink_exec('myconn','BEGIN');
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-- an open transaction will prevent dblink_open() from opening its own
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SELECT dblink_open('myconn','rmt_foo_cursor','SELECT * FROM foo');
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-- this should not commit the transaction because the client opened it
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SELECT dblink_close('myconn','rmt_foo_cursor');
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-- this should succeed because we have an open transaction
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SELECT dblink_exec('myconn','DECLARE xact_test CURSOR FOR SELECT * FROM foo');
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-- commit remote transaction
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SELECT dblink_exec('myconn','COMMIT');
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-- test automatic transactions for multiple cursor opens
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SELECT dblink_open('myconn','rmt_foo_cursor','SELECT * FROM foo');
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-- the second cursor
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SELECT dblink_open('myconn','rmt_foo_cursor2','SELECT * FROM foo');
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-- this should not commit the transaction
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SELECT dblink_close('myconn','rmt_foo_cursor2');
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-- this should succeed because we have an open transaction
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SELECT dblink_exec('myconn','DECLARE xact_test CURSOR FOR SELECT * FROM foo');
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-- this should commit the transaction
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SELECT dblink_close('myconn','rmt_foo_cursor');
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-- this should fail because there is no open transaction
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SELECT dblink_exec('myconn','DECLARE xact_test CURSOR FOR SELECT * FROM foo');
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-- reset remote transaction state
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SELECT dblink_exec('myconn','ABORT');
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-- open a cursor
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SELECT dblink_open('myconn','rmt_foo_cursor','SELECT * FROM foo');
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-- fetch some data
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SELECT *
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FROM dblink_fetch('myconn','rmt_foo_cursor',4) AS t(a int, b text, c text[]);
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SELECT *
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FROM dblink_fetch('myconn','rmt_foo_cursor',4) AS t(a int, b text, c text[]);
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-- this one only finds three rows left
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SELECT *
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FROM dblink_fetch('myconn','rmt_foo_cursor',4) AS t(a int, b text, c text[]);
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-- fetch some data incorrectly
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SELECT *
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FROM dblink_fetch('myconn','rmt_foobar_cursor',4,false) AS t(a int, b text, c text[]);
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-- reset remote transaction state
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SELECT dblink_exec('myconn','ABORT');
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-- should generate 'cursor "rmt_foo_cursor" not found' error
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SELECT *
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FROM dblink_fetch('myconn','rmt_foo_cursor',4) AS t(a int, b text, c text[]);
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-- close the named persistent connection
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SELECT dblink_disconnect('myconn');
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-- should generate "missing "=" after "myconn" in connection info string" error
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SELECT *
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FROM dblink('myconn','SELECT * FROM foo') AS t(a int, b text, c text[])
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WHERE t.a > 7;
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-- create a named persistent connection
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SELECT dblink_connect('myconn','host=127.0.0.1 port=portIp dbname=regression user=userName password=Test@123');
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-- put more data into our slave table, using named persistent connection syntax
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-- but truncate the actual return value so we can use diff to check for success
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SELECT substr(dblink_exec('myconn','INSERT INTO foo VALUES(11,''l'',''{"a11","b11","c11"}'')'),1,6);
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-- let's see it
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SELECT *
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FROM dblink('myconn','SELECT * FROM foo') AS t(a int, b text, c text[]);
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-- change some data
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SELECT dblink_exec('myconn','UPDATE foo SET f3[2] = ''b99'' WHERE f1 = 11');
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-- let's see it
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SELECT *
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FROM dblink('myconn','SELECT * FROM foo') AS t(a int, b text, c text[])
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WHERE a = 11;
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-- delete some data
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SELECT dblink_exec('myconn','DELETE FROM foo WHERE f1 = 11');
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-- let's see it
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SELECT *
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FROM dblink('myconn','SELECT * FROM foo') AS t(a int, b text, c text[])
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WHERE a = 11;
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-- close the named persistent connection
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SELECT dblink_disconnect('myconn');
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-- close the named persistent connection again
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-- should get 'connection "myconn" not available' error
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SELECT dblink_disconnect('myconn');
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-- test asynchronous queries
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SELECT dblink_connect('dtest1', 'host=127.0.0.1 port=portIp dbname=regression user=userName password=Test@123');
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SELECT * from
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dblink_send_query('dtest1', 'select * from foo where f1 < 3') as t1;
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SELECT dblink_connect('dtest2', 'host=127.0.0.1 port=portIp dbname=regression user=userName password=Test@123');
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SELECT * from
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dblink_send_query('dtest2', 'select * from foo where f1 > 2 and f1 < 7') as t1;
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SELECT dblink_connect('dtest3', 'host=127.0.0.1 port=portIp dbname=regression user=userName password=Test@123');
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SELECT * from
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dblink_send_query('dtest3', 'select * from foo where f1 > 6') as t1;
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CREATE TEMPORARY TABLE result AS
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(SELECT * from dblink_get_result('dtest1') as t1(f1 int, f2 text, f3 text[]))
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UNION
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(SELECT * from dblink_get_result('dtest2') as t2(f1 int, f2 text, f3 text[]))
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UNION
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(SELECT * from dblink_get_result('dtest3') as t3(f1 int, f2 text, f3 text[]))
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ORDER by f1;
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-- dblink_get_connections returns an array with elements in a machine-dependent
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-- ordering, so we must resort to unnesting and sorting for a stable result
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create function unnest(anyarray) returns setof anyelement
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language sql strict immutable as $$
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select $1[i] from generate_series(array_lower($1,1), array_upper($1,1)) as i
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$$;
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SELECT * FROM unnest(dblink_get_connections()) ORDER BY 1;
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SELECT dblink_is_busy('dtest1');
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SELECT dblink_disconnect('dtest1');
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SELECT dblink_disconnect('dtest2');
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SELECT dblink_disconnect('dtest3');
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SELECT * from result;
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SELECT dblink_connect('dtest1', 'host=127.0.0.1 port=portIp dbname=regression user=userName password=Test@123');
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SELECT * from
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dblink_send_query('dtest1', 'select * from foo where f1 < 3') as t1;
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SELECT dblink_cancel_query('dtest1');
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SELECT dblink_error_message('dtest1');
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SELECT dblink_disconnect('dtest1');
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-- test asynchronous notifications
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SELECT dblink_connect('host=127.0.0.1 port=portIp dbname=regression user=userName password=Test@123');
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--should return listen
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SELECT dblink_exec('LISTEN regression');
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--should return listen
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SELECT dblink_exec('LISTEN foobar');
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SELECT dblink_exec('NOTIFY regression');
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SELECT dblink_exec('NOTIFY foobar');
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SELECT notify_name, be_pid = (select t.be_pid from dblink('select pg_backend_pid()') as t(be_pid int)) AS is_self_notify, extra from dblink_get_notify();
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SELECT * from dblink_get_notify();
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SELECT dblink_disconnect();
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-- test dropped columns in dblink_build_sql_insert, dblink_build_sql_update
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CREATE TABLE test_dropped
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(
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col1 INT NOT NULL DEFAULT 111,
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id SERIAL PRIMARY KEY,
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col2 INT NOT NULL DEFAULT 112,
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col2b INT NOT NULL DEFAULT 113
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);
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INSERT INTO test_dropped VALUES(default);
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ALTER TABLE test_dropped
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DROP COLUMN col1,
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DROP COLUMN col2,
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ADD COLUMN col3 VARCHAR(10) NOT NULL DEFAULT 'foo',
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ADD COLUMN col4 INT NOT NULL DEFAULT 42;
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SELECT dblink_build_sql_insert('test_dropped', '1', 1,
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ARRAY['1'::TEXT], ARRAY['2'::TEXT]);
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SELECT dblink_build_sql_update('test_dropped', '1', 1,
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ARRAY['1'::TEXT], ARRAY['2'::TEXT]);
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SELECT dblink_build_sql_delete('test_dropped', '1', 1,
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ARRAY['2'::TEXT]);
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-- test local mimicry of remote GUC values that affect datatype I/O
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SET datestyle = ISO, MDY;
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SET intervalstyle = postgres;
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SET timezone = UTC;
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SELECT dblink_connect('myconn','host=127.0.0.1 port=portIp dbname=regression user=userName password=Test@123');
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SELECT dblink_exec('myconn', 'SET datestyle = GERMAN, DMY;');
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-- single row synchronous case
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SELECT *
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FROM dblink('myconn',
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'SELECT * FROM (VALUES (''12.03.2013 00:00:00+00'')) t')
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AS t(a timestamptz);
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-- multi-row synchronous case
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SELECT *
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FROM dblink('myconn',
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'SELECT * FROM
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(VALUES (''12.03.2013 00:00:00+00''),
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(''12.03.2013 00:00:00+00'')) t')
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AS t(a timestamptz);
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-- single-row asynchronous case
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SELECT *
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FROM dblink_send_query('myconn',
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'SELECT * FROM
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(VALUES (''12.03.2013 00:00:00+00'')) t');
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DROP TABLE result;
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CREATE TEMPORARY TABLE result AS
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(SELECT * from dblink_get_result('myconn') as t(t timestamptz))
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UNION ALL
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(SELECT * from dblink_get_result('myconn') as t(t timestamptz));
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SELECT * FROM result;
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DROP TABLE result;
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-- multi-row asynchronous case
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SELECT *
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FROM dblink_send_query('myconn',
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'SELECT * FROM
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(VALUES (''12.03.2013 00:00:00+00''),
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(''12.03.2013 00:00:00+00'')) t');
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CREATE TEMPORARY TABLE result AS
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(SELECT * from dblink_get_result('myconn') as t(t timestamptz))
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UNION ALL
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(SELECT * from dblink_get_result('myconn') as t(t timestamptz))
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UNION ALL
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(SELECT * from dblink_get_result('myconn') as t(t timestamptz));
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SELECT * FROM result;
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DROP TABLE result;
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|
-- Try an ambiguous interval
|
|
SELECT dblink_exec('myconn', 'SET intervalstyle = sql_standard;');
|
|
SELECT *
|
|
FROM dblink('myconn',
|
|
'SELECT * FROM (VALUES (''-1 2:03:04'')) i')
|
|
AS i(i interval);
|
|
|
|
-- Try swapping to another format to ensure the GUCs are tracked
|
|
-- properly through a change.
|
|
CREATE TEMPORARY TABLE result (t timestamptz);
|
|
|
|
SELECT dblink_exec('myconn', 'SET datestyle = ISO, MDY;');
|
|
INSERT INTO result
|
|
SELECT *
|
|
FROM dblink('myconn',
|
|
'SELECT * FROM (VALUES (''03.12.2013 00:00:00+00'')) t')
|
|
AS t(a timestamptz);
|
|
|
|
SELECT dblink_exec('myconn', 'SET datestyle = GERMAN, DMY;');
|
|
INSERT INTO result
|
|
SELECT *
|
|
FROM dblink('myconn',
|
|
'SELECT * FROM (VALUES (''12.03.2013 00:00:00+00'')) t')
|
|
AS t(a timestamptz);
|
|
|
|
SELECT * FROM result;
|
|
|
|
DROP TABLE result;
|
|
|
|
-- Check error throwing in dblink_fetch
|
|
SELECT dblink_open('myconn','error_cursor',
|
|
'SELECT * FROM (VALUES (''1''), (''not an int'')) AS t(text);');
|
|
SELECT *
|
|
FROM dblink_fetch('myconn','error_cursor', 1) AS t(i int);
|
|
SELECT *
|
|
FROM dblink_fetch('myconn','error_cursor', 1) AS t(i int);
|
|
|
|
-- Make sure that the local settings have retained their values in spite
|
|
-- of shenanigans on the connection.
|
|
SHOW datestyle;
|
|
SHOW intervalstyle;
|
|
|
|
-- Clean up GUC-setting tests
|
|
SELECT dblink_disconnect('myconn');
|
|
RESET datestyle;
|
|
RESET intervalstyle;
|
|
RESET timezone;
|