1086 lines
29 KiB
Plaintext
1086 lines
29 KiB
Plaintext
CREATE EXTENSION dblink;
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CREATE EXTENSION
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CREATE TABLE foo(f1 int, f2 text, f3 text[], primary key (f1,f2));
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NOTICE: CREATE TABLE / PRIMARY KEY will create implicit index "foo_pkey" for table "foo"
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CREATE TABLE
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INSERT INTO foo VALUES (0,'a','{"a0","b0","c0"}');
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INSERT 0 1
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INSERT INTO foo VALUES (1,'b','{"a1","b1","c1"}');
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INSERT 0 1
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INSERT INTO foo VALUES (2,'c','{"a2","b2","c2"}');
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INSERT 0 1
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INSERT INTO foo VALUES (3,'d','{"a3","b3","c3"}');
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INSERT 0 1
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INSERT INTO foo VALUES (4,'e','{"a4","b4","c4"}');
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INSERT 0 1
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INSERT INTO foo VALUES (5,'f','{"a5","b5","c5"}');
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INSERT 0 1
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INSERT INTO foo VALUES (6,'g','{"a6","b6","c6"}');
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INSERT 0 1
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INSERT INTO foo VALUES (7,'h','{"a7","b7","c7"}');
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INSERT 0 1
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INSERT INTO foo VALUES (8,'i','{"a8","b8","c8"}');
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INSERT 0 1
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INSERT INTO foo VALUES (9,'j','{"a9","b9","c9"}');
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INSERT 0 1
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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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position | colname
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----------+---------
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1 | f1
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2 | f2
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(2 rows)
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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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dblink_build_sql_insert
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-----------------------------------------------------------
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INSERT INTO foo(f1,f2,f3) VALUES('99','xyz','{a0,b0,c0}')
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(1 row)
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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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ERROR: invalid attribute number 4
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CONTEXT: referenced column: dblink_build_sql_insert
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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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dblink_build_sql_update
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----------------------------------------------------------------------------------------
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UPDATE foo SET f1 = '99', f2 = 'xyz', f3 = '{a0,b0,c0}' WHERE f1 = '99' AND f2 = 'xyz'
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(1 row)
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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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ERROR: invalid attribute number 4
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CONTEXT: referenced column: dblink_build_sql_update
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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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dblink_build_sql_delete
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---------------------------------------------
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DELETE FROM foo WHERE f1 = '0' AND f2 = 'a'
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(1 row)
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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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ERROR: invalid attribute number 4
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CONTEXT: referenced column: dblink_build_sql_delete
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-- retest using a quoted and schema qualified table
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CREATE SCHEMA "MySchema";
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CREATE SCHEMA
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CREATE TABLE "MySchema"."Foo"(f1 int, f2 text, f3 text[], primary key (f1,f2));
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NOTICE: CREATE TABLE / PRIMARY KEY will create implicit index "Foo_pkey" for table "Foo"
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CREATE TABLE
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INSERT INTO "MySchema"."Foo" VALUES (0,'a','{"a0","b0","c0"}');
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INSERT 0 1
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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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position | colname
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----------+---------
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1 | f1
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2 | f2
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(2 rows)
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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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dblink_build_sql_insert
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------------------------------------------------------------------------
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INSERT INTO "MySchema"."Foo"(f1,f2,f3) VALUES('99','xyz','{a0,b0,c0}')
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(1 row)
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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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dblink_build_sql_update
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-----------------------------------------------------------------------------------------------------
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UPDATE "MySchema"."Foo" SET f1 = '99', f2 = 'xyz', f3 = '{a0,b0,c0}' WHERE f1 = '99' AND f2 = 'xyz'
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(1 row)
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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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dblink_build_sql_delete
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----------------------------------------------------------
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DELETE FROM "MySchema"."Foo" WHERE f1 = '0' AND f2 = 'a'
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(1 row)
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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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a | b | c
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---+---+------------
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8 | i | {a8,b8,c8}
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9 | j | {a9,b9,c9}
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(2 rows)
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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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ERROR: connection not available
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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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dblink_connect
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----------------
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OK
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(1 row)
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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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a | b | c
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---+---+------------
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8 | i | {a8,b8,c8}
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9 | j | {a9,b9,c9}
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(2 rows)
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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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NOTICE: relation "foobar" does not exist on single_node1
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CONTEXT: Error occurred on dblink connection named "unnamed": could not open cursor.
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referenced column: dblink_open
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dblink_open
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-------------
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ERROR
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(1 row)
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-- reset remote transaction state
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SELECT dblink_exec('ABORT');
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dblink_exec
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-------------
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ROLLBACK
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(1 row)
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-- open a cursor
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SELECT dblink_open('rmt_foo_cursor','SELECT * FROM foo');
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dblink_open
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-------------
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OK
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(1 row)
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-- close the cursor
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SELECT dblink_close('rmt_foo_cursor',false);
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dblink_close
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--------------
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OK
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(1 row)
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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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dblink_open
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-------------
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OK
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(1 row)
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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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a | b | c
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---+---+------------
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0 | a | {a0,b0,c0}
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1 | b | {a1,b1,c1}
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2 | c | {a2,b2,c2}
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3 | d | {a3,b3,c3}
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(4 rows)
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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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a | b | c
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---+---+------------
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4 | e | {a4,b4,c4}
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5 | f | {a5,b5,c5}
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6 | g | {a6,b6,c6}
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7 | h | {a7,b7,c7}
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(4 rows)
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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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a | b | c
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---+---+------------
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8 | i | {a8,b8,c8}
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9 | j | {a9,b9,c9}
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(2 rows)
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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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NOTICE: cursor "rmt_foobar_cursor" does not exist
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CONTEXT: Error occurred on dblink connection named "unnamed": could not fetch from cursor.
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a | b | c
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---+---+---
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(0 rows)
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-- reset remote transaction state
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SELECT dblink_exec('ABORT');
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dblink_exec
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-------------
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ROLLBACK
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(1 row)
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-- close the wrong cursor
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SELECT dblink_close('rmt_foobar_cursor',false);
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NOTICE: cursor "rmt_foobar_cursor" does not exist
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CONTEXT: Error occurred on dblink connection named "unnamed": could not close cursor.
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referenced column: dblink_close
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dblink_close
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--------------
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ERROR
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(1 row)
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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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ERROR: cursor "rmt_foo_cursor" does not exist
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CONTEXT: Error occurred on dblink connection named "unnamed": could not fetch from cursor.
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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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NOTICE: cursor "rmt_foo_cursor" does not exist
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CONTEXT: Error occurred on dblink connection named "unnamed": could not fetch from cursor.
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a | b | c
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---+---+---
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(0 rows)
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-- close the persistent connection
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SELECT dblink_disconnect();
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dblink_disconnect
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-------------------
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OK
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(1 row)
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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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ERROR: connection not available
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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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substr
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--------
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INSERT
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(1 row)
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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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dblink_connect
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----------------
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OK
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(1 row)
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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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substr
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--------
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INSERT
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(1 row)
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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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a | b | c
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----+---+---------------
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0 | a | {a0,b0,c0}
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1 | b | {a1,b1,c1}
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2 | c | {a2,b2,c2}
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3 | d | {a3,b3,c3}
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4 | e | {a4,b4,c4}
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5 | f | {a5,b5,c5}
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6 | g | {a6,b6,c6}
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7 | h | {a7,b7,c7}
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8 | i | {a8,b8,c8}
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9 | j | {a9,b9,c9}
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10 | k | {a10,b10,c10}
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11 | l | {a11,b11,c11}
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(12 rows)
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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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NOTICE: relation "foobar" does not exist on single_node1
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CONTEXT: Error occurred on dblink connection named "unnamed": could not execute query.
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a | b | c
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---+---+---
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(0 rows)
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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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dblink_exec
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-------------
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UPDATE 1
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(1 row)
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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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a | b | c
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----+---+---------------
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11 | l | {a11,b99,c11}
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(1 row)
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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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NOTICE: relation "foobar" does not exist on single_node1
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CONTEXT: Error occurred on dblink connection named "unnamed": could not execute command.
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referenced column: dblink_exec
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dblink_exec
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-------------
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ERROR
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(1 row)
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-- delete some data
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SELECT dblink_exec('DELETE FROM foo WHERE f1 = 11');
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dblink_exec
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-------------
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DELETE 1
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(1 row)
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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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a | b | c
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---+---+---
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(0 rows)
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-- close the persistent connection
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SELECT dblink_disconnect();
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dblink_disconnect
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-------------------
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OK
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(1 row)
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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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ERROR: could not establish connection
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DETAIL: missing "=" after "myconn" in connection info string
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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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dblink_connect
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----------------
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OK
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(1 row)
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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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a | b | c
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----+---+---------------
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8 | i | {a8,b8,c8}
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9 | j | {a9,b9,c9}
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10 | k | {a10,b10,c10}
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(3 rows)
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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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NOTICE: relation "foobar" does not exist on single_node1
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CONTEXT: Error occurred on dblink connection named "myconn": could not execute query.
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a | b | c
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---+---+---
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(0 rows)
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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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ERROR: duplicate connection name
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CONTEXT: referenced column: dblink_connect
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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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dblink_connect
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----------------
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OK
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(1 row)
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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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a | b | c
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----+---+---------------
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8 | i | {a8,b8,c8}
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9 | j | {a9,b9,c9}
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10 | k | {a10,b10,c10}
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(3 rows)
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-- close the second named persistent connection
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SELECT dblink_disconnect('myconn2');
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dblink_disconnect
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-------------------
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OK
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(1 row)
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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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NOTICE: relation "foobar" does not exist on single_node1
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CONTEXT: Error occurred on dblink connection named "myconn": could not open cursor.
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referenced column: dblink_open
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dblink_open
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-------------
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ERROR
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(1 row)
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-- reset remote transaction state
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SELECT dblink_exec('myconn','ABORT');
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dblink_exec
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-------------
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ROLLBACK
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(1 row)
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-- test opening cursor in a transaction
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SELECT dblink_exec('myconn','BEGIN');
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dblink_exec
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-------------
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BEGIN
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(1 row)
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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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dblink_open
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-------------
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OK
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(1 row)
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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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dblink_close
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--------------
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OK
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(1 row)
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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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dblink_exec
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----------------
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DECLARE CURSOR
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(1 row)
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-- commit remote transaction
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SELECT dblink_exec('myconn','COMMIT');
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dblink_exec
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-------------
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COMMIT
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(1 row)
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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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dblink_open
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-------------
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OK
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(1 row)
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-- the second cursor
|
|
SELECT dblink_open('myconn','rmt_foo_cursor2','SELECT * FROM foo');
|
|
dblink_open
|
|
-------------
|
|
OK
|
|
(1 row)
|
|
|
|
-- this should not commit the transaction
|
|
SELECT dblink_close('myconn','rmt_foo_cursor2');
|
|
dblink_close
|
|
--------------
|
|
OK
|
|
(1 row)
|
|
|
|
-- this should succeed because we have an open transaction
|
|
SELECT dblink_exec('myconn','DECLARE xact_test CURSOR FOR SELECT * FROM foo');
|
|
dblink_exec
|
|
----------------
|
|
DECLARE CURSOR
|
|
(1 row)
|
|
|
|
-- this should commit the transaction
|
|
SELECT dblink_close('myconn','rmt_foo_cursor');
|
|
dblink_close
|
|
--------------
|
|
OK
|
|
(1 row)
|
|
|
|
-- this should fail because there is no open transaction
|
|
SELECT dblink_exec('myconn','DECLARE xact_test CURSOR FOR SELECT * FROM foo');
|
|
ERROR: DECLARE CURSOR can only be used in transaction blocks
|
|
CONTEXT: Error occurred on dblink connection named "myconn": could not execute command.
|
|
referenced column: dblink_exec
|
|
-- reset remote transaction state
|
|
SELECT dblink_exec('myconn','ABORT');
|
|
dblink_exec
|
|
-------------
|
|
ROLLBACK
|
|
(1 row)
|
|
|
|
-- open a cursor
|
|
SELECT dblink_open('myconn','rmt_foo_cursor','SELECT * FROM foo');
|
|
dblink_open
|
|
-------------
|
|
OK
|
|
(1 row)
|
|
|
|
-- fetch some data
|
|
SELECT *
|
|
FROM dblink_fetch('myconn','rmt_foo_cursor',4) AS t(a int, b text, c text[]);
|
|
a | b | c
|
|
---+---+------------
|
|
0 | a | {a0,b0,c0}
|
|
1 | b | {a1,b1,c1}
|
|
2 | c | {a2,b2,c2}
|
|
3 | d | {a3,b3,c3}
|
|
(4 rows)
|
|
|
|
SELECT *
|
|
FROM dblink_fetch('myconn','rmt_foo_cursor',4) AS t(a int, b text, c text[]);
|
|
a | b | c
|
|
---+---+------------
|
|
4 | e | {a4,b4,c4}
|
|
5 | f | {a5,b5,c5}
|
|
6 | g | {a6,b6,c6}
|
|
7 | h | {a7,b7,c7}
|
|
(4 rows)
|
|
|
|
-- this one only finds three rows left
|
|
SELECT *
|
|
FROM dblink_fetch('myconn','rmt_foo_cursor',4) AS t(a int, b text, c text[]);
|
|
a | b | c
|
|
----+---+---------------
|
|
8 | i | {a8,b8,c8}
|
|
9 | j | {a9,b9,c9}
|
|
10 | k | {a10,b10,c10}
|
|
(3 rows)
|
|
|
|
-- fetch some data incorrectly
|
|
SELECT *
|
|
FROM dblink_fetch('myconn','rmt_foobar_cursor',4,false) AS t(a int, b text, c text[]);
|
|
NOTICE: cursor "rmt_foobar_cursor" does not exist
|
|
CONTEXT: Error occurred on dblink connection named "myconn": could not fetch from cursor.
|
|
a | b | c
|
|
---+---+---
|
|
(0 rows)
|
|
|
|
-- reset remote transaction state
|
|
SELECT dblink_exec('myconn','ABORT');
|
|
dblink_exec
|
|
-------------
|
|
ROLLBACK
|
|
(1 row)
|
|
|
|
-- should generate 'cursor "rmt_foo_cursor" not found' error
|
|
SELECT *
|
|
FROM dblink_fetch('myconn','rmt_foo_cursor',4) AS t(a int, b text, c text[]);
|
|
ERROR: cursor "rmt_foo_cursor" does not exist
|
|
CONTEXT: Error occurred on dblink connection named "myconn": could not fetch from cursor.
|
|
-- close the named persistent connection
|
|
SELECT dblink_disconnect('myconn');
|
|
dblink_disconnect
|
|
-------------------
|
|
OK
|
|
(1 row)
|
|
|
|
-- should generate "missing "=" after "myconn" in connection info string" error
|
|
SELECT *
|
|
FROM dblink('myconn','SELECT * FROM foo') AS t(a int, b text, c text[])
|
|
WHERE t.a > 7;
|
|
ERROR: could not establish connection
|
|
DETAIL: missing "=" after "myconn" in connection info string
|
|
|
|
-- create a named persistent connection
|
|
SELECT dblink_connect('myconn','host=127.0.0.1 port=portIp dbname=regression user=userName password=Test@123');
|
|
dblink_connect
|
|
----------------
|
|
OK
|
|
(1 row)
|
|
|
|
-- put more data into our slave table, using named persistent connection syntax
|
|
-- but truncate the actual return value so we can use diff to check for success
|
|
SELECT substr(dblink_exec('myconn','INSERT INTO foo VALUES(11,''l'',''{"a11","b11","c11"}'')'),1,6);
|
|
substr
|
|
--------
|
|
INSERT
|
|
(1 row)
|
|
|
|
-- let's see it
|
|
SELECT *
|
|
FROM dblink('myconn','SELECT * FROM foo') AS t(a int, b text, c text[]);
|
|
a | b | c
|
|
----+---+---------------
|
|
0 | a | {a0,b0,c0}
|
|
1 | b | {a1,b1,c1}
|
|
2 | c | {a2,b2,c2}
|
|
3 | d | {a3,b3,c3}
|
|
4 | e | {a4,b4,c4}
|
|
5 | f | {a5,b5,c5}
|
|
6 | g | {a6,b6,c6}
|
|
7 | h | {a7,b7,c7}
|
|
8 | i | {a8,b8,c8}
|
|
9 | j | {a9,b9,c9}
|
|
10 | k | {a10,b10,c10}
|
|
11 | l | {a11,b11,c11}
|
|
(12 rows)
|
|
|
|
-- change some data
|
|
SELECT dblink_exec('myconn','UPDATE foo SET f3[2] = ''b99'' WHERE f1 = 11');
|
|
dblink_exec
|
|
-------------
|
|
UPDATE 1
|
|
(1 row)
|
|
|
|
-- let's see it
|
|
SELECT *
|
|
FROM dblink('myconn','SELECT * FROM foo') AS t(a int, b text, c text[])
|
|
WHERE a = 11;
|
|
a | b | c
|
|
----+---+---------------
|
|
11 | l | {a11,b99,c11}
|
|
(1 row)
|
|
|
|
-- delete some data
|
|
SELECT dblink_exec('myconn','DELETE FROM foo WHERE f1 = 11');
|
|
dblink_exec
|
|
-------------
|
|
DELETE 1
|
|
(1 row)
|
|
|
|
-- let's see it
|
|
SELECT *
|
|
FROM dblink('myconn','SELECT * FROM foo') AS t(a int, b text, c text[])
|
|
WHERE a = 11;
|
|
a | b | c
|
|
---+---+---
|
|
(0 rows)
|
|
|
|
-- close the named persistent connection
|
|
SELECT dblink_disconnect('myconn');
|
|
dblink_disconnect
|
|
-------------------
|
|
OK
|
|
(1 row)
|
|
|
|
-- close the named persistent connection again
|
|
-- should get 'connection "myconn" not available' error
|
|
SELECT dblink_disconnect('myconn');
|
|
ERROR: connection "myconn" not available
|
|
CONTEXT: referenced column: dblink_disconnect
|
|
-- test asynchronous queries
|
|
SELECT dblink_connect('dtest1', 'host=127.0.0.1 port=portIp dbname=regression user=userName password=Test@123');
|
|
dblink_connect
|
|
----------------
|
|
OK
|
|
(1 row)
|
|
|
|
SELECT * from
|
|
dblink_send_query('dtest1', 'select * from foo where f1 < 3') as t1;
|
|
t1
|
|
----
|
|
1
|
|
(1 row)
|
|
|
|
SELECT dblink_connect('dtest2', 'host=127.0.0.1 port=portIp dbname=regression user=userName password=Test@123');
|
|
dblink_connect
|
|
----------------
|
|
OK
|
|
(1 row)
|
|
|
|
SELECT * from
|
|
dblink_send_query('dtest2', 'select * from foo where f1 > 2 and f1 < 7') as t1;
|
|
t1
|
|
----
|
|
1
|
|
(1 row)
|
|
|
|
SELECT dblink_connect('dtest3', 'host=127.0.0.1 port=portIp dbname=regression user=userName password=Test@123');
|
|
dblink_connect
|
|
----------------
|
|
OK
|
|
(1 row)
|
|
|
|
SELECT * from
|
|
dblink_send_query('dtest3', 'select * from foo where f1 > 6') as t1;
|
|
t1
|
|
----
|
|
1
|
|
(1 row)
|
|
|
|
CREATE TEMPORARY TABLE result AS
|
|
(SELECT * from dblink_get_result('dtest1') as t1(f1 int, f2 text, f3 text[]))
|
|
UNION
|
|
(SELECT * from dblink_get_result('dtest2') as t2(f1 int, f2 text, f3 text[]))
|
|
UNION
|
|
(SELECT * from dblink_get_result('dtest3') as t3(f1 int, f2 text, f3 text[]))
|
|
ORDER by f1;
|
|
INSERT 0 11
|
|
-- dblink_get_connections returns an array with elements in a machine-dependent
|
|
-- ordering, so we must resort to unnesting and sorting for a stable result
|
|
create function unnest(anyarray) returns setof anyelement
|
|
language sql strict immutable as $$
|
|
select $1[i] from generate_series(array_lower($1,1), array_upper($1,1)) as i
|
|
$$;
|
|
CREATE FUNCTION
|
|
SELECT * FROM unnest(dblink_get_connections()) ORDER BY 1;
|
|
unnest
|
|
--------
|
|
dtest1
|
|
dtest2
|
|
dtest3
|
|
(3 rows)
|
|
|
|
SELECT dblink_is_busy('dtest1');
|
|
dblink_is_busy
|
|
----------------
|
|
0
|
|
(1 row)
|
|
|
|
SELECT dblink_disconnect('dtest1');
|
|
dblink_disconnect
|
|
-------------------
|
|
OK
|
|
(1 row)
|
|
|
|
SELECT dblink_disconnect('dtest2');
|
|
dblink_disconnect
|
|
-------------------
|
|
OK
|
|
(1 row)
|
|
|
|
SELECT dblink_disconnect('dtest3');
|
|
dblink_disconnect
|
|
-------------------
|
|
OK
|
|
(1 row)
|
|
|
|
SELECT * from result;
|
|
f1 | f2 | f3
|
|
----+----+---------------
|
|
0 | a | {a0,b0,c0}
|
|
1 | b | {a1,b1,c1}
|
|
2 | c | {a2,b2,c2}
|
|
3 | d | {a3,b3,c3}
|
|
4 | e | {a4,b4,c4}
|
|
5 | f | {a5,b5,c5}
|
|
6 | g | {a6,b6,c6}
|
|
7 | h | {a7,b7,c7}
|
|
8 | i | {a8,b8,c8}
|
|
9 | j | {a9,b9,c9}
|
|
10 | k | {a10,b10,c10}
|
|
(11 rows)
|
|
|
|
SELECT dblink_connect('dtest1', 'host=127.0.0.1 port=portIp dbname=regression user=userName password=Test@123');
|
|
dblink_connect
|
|
----------------
|
|
OK
|
|
(1 row)
|
|
|
|
SELECT * from
|
|
dblink_send_query('dtest1', 'select * from foo where f1 < 3') as t1;
|
|
t1
|
|
----
|
|
1
|
|
(1 row)
|
|
|
|
SELECT dblink_cancel_query('dtest1');
|
|
dblink_cancel_query
|
|
---------------------
|
|
OK
|
|
(1 row)
|
|
|
|
SELECT dblink_error_message('dtest1');
|
|
dblink_error_message
|
|
----------------------
|
|
OK
|
|
(1 row)
|
|
|
|
SELECT dblink_disconnect('dtest1');
|
|
dblink_disconnect
|
|
-------------------
|
|
OK
|
|
(1 row)
|
|
|
|
-- test asynchronous notifications
|
|
SELECT dblink_connect('host=127.0.0.1 port=portIp dbname=regression user=userName password=Test@123');
|
|
dblink_connect
|
|
----------------
|
|
OK
|
|
(1 row)
|
|
|
|
--should return listen
|
|
SELECT dblink_exec('LISTEN regression');
|
|
ERROR: LISTEN statement is not yet supported.
|
|
CONTEXT: Error occurred on dblink connection named "unnamed": could not execute command.
|
|
referenced column: dblink_exec
|
|
--should return listen
|
|
SELECT dblink_exec('LISTEN foobar');
|
|
ERROR: LISTEN statement is not yet supported.
|
|
CONTEXT: Error occurred on dblink connection named "unnamed": could not execute command.
|
|
referenced column: dblink_exec
|
|
SELECT dblink_exec('NOTIFY regression');
|
|
ERROR: NOFITY statement is not yet supported.
|
|
CONTEXT: Error occurred on dblink connection named "unnamed": could not execute command.
|
|
referenced column: dblink_exec
|
|
SELECT dblink_exec('NOTIFY foobar');
|
|
ERROR: NOFITY statement is not yet supported.
|
|
CONTEXT: Error occurred on dblink connection named "unnamed": could not execute command.
|
|
referenced column: dblink_exec
|
|
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();
|
|
notify_name | is_self_notify | extra
|
|
-------------+----------------+-------
|
|
(0 rows)
|
|
|
|
SELECT * from dblink_get_notify();
|
|
notify_name | be_pid | extra
|
|
-------------+--------+-------
|
|
(0 rows)
|
|
|
|
SELECT dblink_disconnect();
|
|
dblink_disconnect
|
|
-------------------
|
|
OK
|
|
(1 row)
|
|
|
|
-- test dropped columns in dblink_build_sql_insert, dblink_build_sql_update
|
|
CREATE TABLE test_dropped
|
|
(
|
|
col1 INT NOT NULL DEFAULT 111,
|
|
id SERIAL PRIMARY KEY,
|
|
col2 INT NOT NULL DEFAULT 112,
|
|
col2b INT NOT NULL DEFAULT 113
|
|
);
|
|
NOTICE: CREATE TABLE will create implicit sequence "test_dropped_id_seq" for serial column "test_dropped.id"
|
|
NOTICE: CREATE TABLE / PRIMARY KEY will create implicit index "test_dropped_pkey" for table "test_dropped"
|
|
CREATE TABLE
|
|
INSERT INTO test_dropped VALUES(default);
|
|
INSERT 0 1
|
|
ALTER TABLE test_dropped
|
|
DROP COLUMN col1,
|
|
DROP COLUMN col2,
|
|
ADD COLUMN col3 VARCHAR(10) NOT NULL DEFAULT 'foo',
|
|
ADD COLUMN col4 INT NOT NULL DEFAULT 42;
|
|
ALTER TABLE
|
|
SELECT dblink_build_sql_insert('test_dropped', '1', 1,
|
|
ARRAY['1'::TEXT], ARRAY['2'::TEXT]);
|
|
dblink_build_sql_insert
|
|
---------------------------------------------------------------------------
|
|
INSERT INTO test_dropped(id,col2b,col3,col4) VALUES('2','113','foo','42')
|
|
(1 row)
|
|
|
|
SELECT dblink_build_sql_update('test_dropped', '1', 1,
|
|
ARRAY['1'::TEXT], ARRAY['2'::TEXT]);
|
|
dblink_build_sql_update
|
|
-------------------------------------------------------------------------------------------
|
|
UPDATE test_dropped SET id = '2', col2b = '113', col3 = 'foo', col4 = '42' WHERE id = '2'
|
|
(1 row)
|
|
|
|
SELECT dblink_build_sql_delete('test_dropped', '1', 1,
|
|
ARRAY['2'::TEXT]);
|
|
dblink_build_sql_delete
|
|
-----------------------------------------
|
|
DELETE FROM test_dropped WHERE id = '2'
|
|
(1 row)
|
|
|
|
-- test local mimicry of remote GUC values that affect datatype I/O
|
|
SET datestyle = ISO, MDY;
|
|
SET
|
|
SET intervalstyle = postgres;
|
|
SET
|
|
SET timezone = UTC;
|
|
SET
|
|
SELECT dblink_connect('myconn','host=127.0.0.1 port=portIp dbname=regression user=userName password=Test@123');
|
|
dblink_connect
|
|
----------------
|
|
OK
|
|
(1 row)
|
|
|
|
SELECT dblink_exec('myconn', 'SET datestyle = GERMAN, DMY;');
|
|
dblink_exec
|
|
-------------
|
|
SET
|
|
(1 row)
|
|
|
|
-- single row synchronous case
|
|
SELECT *
|
|
FROM dblink('myconn',
|
|
'SELECT * FROM (VALUES (''12.03.2013 00:00:00+00'')) t')
|
|
AS t(a timestamptz);
|
|
a
|
|
------------------------
|
|
2013-03-12 00:00:00+00
|
|
(1 row)
|
|
|
|
-- multi-row synchronous case
|
|
SELECT *
|
|
FROM dblink('myconn',
|
|
'SELECT * FROM
|
|
(VALUES (''12.03.2013 00:00:00+00''),
|
|
(''12.03.2013 00:00:00+00'')) t')
|
|
AS t(a timestamptz);
|
|
a
|
|
------------------------
|
|
2013-03-12 00:00:00+00
|
|
2013-03-12 00:00:00+00
|
|
(2 rows)
|
|
|
|
-- single-row asynchronous case
|
|
SELECT *
|
|
FROM dblink_send_query('myconn',
|
|
'SELECT * FROM
|
|
(VALUES (''12.03.2013 00:00:00+00'')) t');
|
|
dblink_send_query
|
|
-------------------
|
|
1
|
|
(1 row)
|
|
|
|
DROP TABLE result;
|
|
DROP TABLE
|
|
CREATE TEMPORARY TABLE result AS
|
|
(SELECT * from dblink_get_result('myconn') as t(t timestamptz))
|
|
UNION ALL
|
|
(SELECT * from dblink_get_result('myconn') as t(t timestamptz));
|
|
INSERT 0 1
|
|
SELECT * FROM result;
|
|
t
|
|
------------------------
|
|
2013-03-12 00:00:00+00
|
|
(1 row)
|
|
|
|
DROP TABLE result;
|
|
DROP TABLE
|
|
-- multi-row asynchronous case
|
|
SELECT *
|
|
FROM dblink_send_query('myconn',
|
|
'SELECT * FROM
|
|
(VALUES (''12.03.2013 00:00:00+00''),
|
|
(''12.03.2013 00:00:00+00'')) t');
|
|
dblink_send_query
|
|
-------------------
|
|
1
|
|
(1 row)
|
|
|
|
CREATE TEMPORARY TABLE result AS
|
|
(SELECT * from dblink_get_result('myconn') as t(t timestamptz))
|
|
UNION ALL
|
|
(SELECT * from dblink_get_result('myconn') as t(t timestamptz))
|
|
UNION ALL
|
|
(SELECT * from dblink_get_result('myconn') as t(t timestamptz));
|
|
INSERT 0 2
|
|
SELECT * FROM result;
|
|
t
|
|
------------------------
|
|
2013-03-12 00:00:00+00
|
|
2013-03-12 00:00:00+00
|
|
(2 rows)
|
|
|
|
DROP TABLE result;
|
|
DROP TABLE
|
|
-- Try an ambiguous interval
|
|
SELECT dblink_exec('myconn', 'SET intervalstyle = sql_standard;');
|
|
dblink_exec
|
|
-------------
|
|
SET
|
|
(1 row)
|
|
|
|
SELECT *
|
|
FROM dblink('myconn',
|
|
'SELECT * FROM (VALUES (''-1 2:03:04'')) i')
|
|
AS i(i interval);
|
|
i
|
|
-------------------
|
|
-1 days -02:03:04
|
|
(1 row)
|
|
|
|
-- Try swapping to another format to ensure the GUCs are tracked
|
|
-- properly through a change.
|
|
CREATE TEMPORARY TABLE result (t timestamptz);
|
|
CREATE TABLE
|
|
SELECT dblink_exec('myconn', 'SET datestyle = ISO, MDY;');
|
|
dblink_exec
|
|
-------------
|
|
SET
|
|
(1 row)
|
|
|
|
INSERT INTO result
|
|
SELECT *
|
|
FROM dblink('myconn',
|
|
'SELECT * FROM (VALUES (''03.12.2013 00:00:00+00'')) t')
|
|
AS t(a timestamptz);
|
|
INSERT 0 1
|
|
SELECT dblink_exec('myconn', 'SET datestyle = GERMAN, DMY;');
|
|
dblink_exec
|
|
-------------
|
|
SET
|
|
(1 row)
|
|
|
|
INSERT INTO result
|
|
SELECT *
|
|
FROM dblink('myconn',
|
|
'SELECT * FROM (VALUES (''12.03.2013 00:00:00+00'')) t')
|
|
AS t(a timestamptz);
|
|
INSERT 0 1
|
|
SELECT * FROM result;
|
|
t
|
|
------------------------
|
|
2013-03-12 00:00:00+00
|
|
2013-03-12 00:00:00+00
|
|
(2 rows)
|
|
|
|
DROP TABLE result;
|
|
DROP TABLE
|
|
-- Check error throwing in dblink_fetch
|
|
SELECT dblink_open('myconn','error_cursor',
|
|
'SELECT * FROM (VALUES (''1''), (''not an int'')) AS t(text);');
|
|
dblink_open
|
|
-------------
|
|
OK
|
|
(1 row)
|
|
|
|
SELECT *
|
|
FROM dblink_fetch('myconn','error_cursor', 1) AS t(i int);
|
|
i
|
|
---
|
|
1
|
|
(1 row)
|
|
|
|
SELECT *
|
|
FROM dblink_fetch('myconn','error_cursor', 1) AS t(i int);
|
|
ERROR: invalid input syntax for integer: "not an int"
|
|
-- Make sure that the local settings have retained their values in spite
|
|
-- of shenanigans on the connection.
|
|
SHOW datestyle;
|
|
DateStyle
|
|
-----------
|
|
ISO, MDY
|
|
(1 row)
|
|
|
|
SHOW intervalstyle;
|
|
IntervalStyle
|
|
---------------
|
|
postgres
|
|
(1 row)
|
|
|
|
-- Clean up GUC-setting tests
|
|
SELECT dblink_disconnect('myconn');
|
|
dblink_disconnect
|
|
-------------------
|
|
OK
|
|
(1 row)
|
|
|
|
RESET datestyle;
|
|
RESET
|
|
RESET intervalstyle;
|
|
RESET
|
|
RESET timezone;
|
|
RESET
|