Location via proxy:   [ UP ]  
[Report a bug]   [Manage cookies]                
Skip to content

Commit a02780f

Browse files
bmomjianbmomjian
committed
Add missing dblink files.
1 parent 81631ac commit a02780f

File tree

9 files changed

+903
-0
lines changed

9 files changed

+903
-0
lines changed

‎contrib/dblink/dblink.test.expected.out

Lines changed: 202 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,202 @@
1+
\connect dblink_test_slave
2+
create table foo(f1 int, f2 text, f3 text[], primary key (f1,f2));
3+
NOTICE: CREATE TABLE / PRIMARY KEY will create implicit index 'foo_pkey' for table 'foo'
4+
insert into foo values(0,'a','{"a0","b0","c0"}');
5+
insert into foo values(1,'b','{"a1","b1","c1"}');
6+
insert into foo values(2,'c','{"a2","b2","c2"}');
7+
insert into foo values(3,'d','{"a3","b3","c3"}');
8+
insert into foo values(4,'e','{"a4","b4","c4"}');
9+
insert into foo values(5,'f','{"a5","b5","c5"}');
10+
insert into foo values(6,'g','{"a6","b6","c6"}');
11+
insert into foo values(7,'h','{"a7","b7","c7"}');
12+
insert into foo values(8,'i','{"a8","b8","c8"}');
13+
insert into foo values(9,'j','{"a9","b9","c9"}');
14+
\connect dblink_test_master
15+
-- regular old dblink
16+
select * from dblink('dbname=dblink_test_slave','select * from foo') as t(a int, b text, c text[]) where t.a > 7;
17+
a | b | c
18+
---+---+------------
19+
8 | i | {a8,b8,c8}
20+
9 | j | {a9,b9,c9}
21+
(2 rows)
22+
23+
-- should generate "no connection available" error
24+
select * from dblink('select * from foo') as t(a int, b text, c text[]) where t.a > 7;
25+
ERROR: dblink: no connection available
26+
-- create a persistent connection
27+
select dblink_connect('dbname=dblink_test_slave');
28+
dblink_connect
29+
----------------
30+
OK
31+
(1 row)
32+
33+
-- use the persistent connection
34+
select * from dblink('select * from foo') as t(a int, b text, c text[]) where t.a > 7;
35+
a | b | c
36+
---+---+------------
37+
8 | i | {a8,b8,c8}
38+
9 | j | {a9,b9,c9}
39+
(2 rows)
40+
41+
-- open a cursor
42+
select dblink_open('rmt_foo_cursor','select * from foo');
43+
dblink_open
44+
-------------
45+
OK
46+
(1 row)
47+
48+
-- fetch some data
49+
select * from dblink_fetch('rmt_foo_cursor',4) as t(a int, b text, c text[]);
50+
a | b | c
51+
---+---+------------
52+
0 | a | {a0,b0,c0}
53+
1 | b | {a1,b1,c1}
54+
2 | c | {a2,b2,c2}
55+
3 | d | {a3,b3,c3}
56+
(4 rows)
57+
58+
select * from dblink_fetch('rmt_foo_cursor',4) as t(a int, b text, c text[]);
59+
a | b | c
60+
---+---+------------
61+
4 | e | {a4,b4,c4}
62+
5 | f | {a5,b5,c5}
63+
6 | g | {a6,b6,c6}
64+
7 | h | {a7,b7,c7}
65+
(4 rows)
66+
67+
-- this one only finds two rows left
68+
select * from dblink_fetch('rmt_foo_cursor',4) as t(a int, b text, c text[]);
69+
a | b | c
70+
---+---+------------
71+
8 | i | {a8,b8,c8}
72+
9 | j | {a9,b9,c9}
73+
(2 rows)
74+
75+
-- close the cursor
76+
select dblink_close('rmt_foo_cursor');
77+
dblink_close
78+
--------------
79+
OK
80+
(1 row)
81+
82+
-- should generate "cursor rmt_foo_cursor does not exist" error
83+
select * from dblink_fetch('rmt_foo_cursor',4) as t(a int, b text, c text[]);
84+
ERROR: dblink_fetch: cursor rmt_foo_cursor does not exist
85+
-- close the persistent connection
86+
select dblink_disconnect();
87+
dblink_disconnect
88+
-------------------
89+
OK
90+
(1 row)
91+
92+
-- should generate "no connection available" error
93+
select * from dblink('select * from foo') as t(a int, b text, c text[]) where t.a > 7;
94+
ERROR: dblink: no connection available
95+
-- put more data into our slave table, first using arbitrary connection syntax
96+
-- but truncate the actual return value so we can use diff to check for success
97+
select substr(dblink_exec('dbname=dblink_test_slave','insert into foo values(10,''k'',''{"a10","b10","c10"}'')'),1,6);
98+
substr
99+
--------
100+
INSERT
101+
(1 row)
102+
103+
-- create a persistent connection
104+
select dblink_connect('dbname=dblink_test_slave');
105+
dblink_connect
106+
----------------
107+
OK
108+
(1 row)
109+
110+
-- put more data into our slave table, using persistent connection syntax
111+
-- but truncate the actual return value so we can use diff to check for success
112+
select substr(dblink_exec('insert into foo values(11,''l'',''{"a11","b11","c11"}'')'),1,6);
113+
substr
114+
--------
115+
INSERT
116+
(1 row)
117+
118+
-- let's see it
119+
select * from dblink('select * from foo') as t(a int, b text, c text[]);
120+
a | b | c
121+
----+---+---------------
122+
0 | a | {a0,b0,c0}
123+
1 | b | {a1,b1,c1}
124+
2 | c | {a2,b2,c2}
125+
3 | d | {a3,b3,c3}
126+
4 | e | {a4,b4,c4}
127+
5 | f | {a5,b5,c5}
128+
6 | g | {a6,b6,c6}
129+
7 | h | {a7,b7,c7}
130+
8 | i | {a8,b8,c8}
131+
9 | j | {a9,b9,c9}
132+
10 | k | {a10,b10,c10}
133+
11 | l | {a11,b11,c11}
134+
(12 rows)
135+
136+
-- change some data
137+
select dblink_exec('update foo set f3[2] = ''b99'' where f1 = 11');
138+
dblink_exec
139+
-------------
140+
UPDATE 1
141+
(1 row)
142+
143+
-- let's see it
144+
select * from dblink('select * from foo') as t(a int, b text, c text[]) where a = 11;
145+
a | b | c
146+
----+---+---------------
147+
11 | l | {a11,b99,c11}
148+
(1 row)
149+
150+
-- delete some data
151+
select dblink_exec('delete from foo where f1 = 11');
152+
dblink_exec
153+
-------------
154+
DELETE 1
155+
(1 row)
156+
157+
-- let's see it
158+
select * from dblink('select * from foo') as t(a int, b text, c text[]) where a = 11;
159+
a | b | c
160+
---+---+---
161+
(0 rows)
162+
163+
-- misc utilities
164+
\connect dblink_test_slave
165+
-- show the currently executing query
166+
select 'hello' as hello, dblink_current_query() as query;
167+
hello | query
168+
-------+-----------------------------------------------------------
169+
hello | select 'hello' as hello, dblink_current_query() as query;
170+
(1 row)
171+
172+
-- list the primary key fields
173+
select * from dblink_get_pkey('foo');
174+
position | colname
175+
----------+---------
176+
1 | f1
177+
2 | f2
178+
(2 rows)
179+
180+
-- build an insert statement based on a local tuple,
181+
-- replacing the primary key values with new ones
182+
select dblink_build_sql_insert('foo','1 2',2,'{"0", "a"}','{"99", "xyz"}');
183+
dblink_build_sql_insert
184+
-----------------------------------------------------------
185+
INSERT INTO foo(f1,f2,f3) VALUES('99','xyz','{a0,b0,c0}')
186+
(1 row)
187+
188+
-- build an update statement based on a local tuple,
189+
-- replacing the primary key values with new ones
190+
select dblink_build_sql_update('foo','1 2',2,'{"0", "a"}','{"99", "xyz"}');
191+
dblink_build_sql_update
192+
----------------------------------------------------------------------------------------
193+
UPDATE foo SET f1 = '99', f2 = 'xyz', f3 = '{a0,b0,c0}' WHERE f1 = '99' AND f2 = 'xyz'
194+
(1 row)
195+
196+
-- build a delete statement based on a local tuple,
197+
select dblink_build_sql_delete('foo','1 2',2,'{"0", "a"}');
198+
dblink_build_sql_delete
199+
---------------------------------------------
200+
DELETE FROM foo WHERE f1 = '0' AND f2 = 'a'
201+
(1 row)
202+

‎contrib/dblink/dblink.test.sql

Lines changed: 95 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,95 @@
1+
\connect dblink_test_slave
2+
3+
create table foo(f1 int, f2 text, f3 text[], primary key (f1,f2));
4+
insert into foo values(0,'a','{"a0","b0","c0"}');
5+
insert into foo values(1,'b','{"a1","b1","c1"}');
6+
insert into foo values(2,'c','{"a2","b2","c2"}');
7+
insert into foo values(3,'d','{"a3","b3","c3"}');
8+
insert into foo values(4,'e','{"a4","b4","c4"}');
9+
insert into foo values(5,'f','{"a5","b5","c5"}');
10+
insert into foo values(6,'g','{"a6","b6","c6"}');
11+
insert into foo values(7,'h','{"a7","b7","c7"}');
12+
insert into foo values(8,'i','{"a8","b8","c8"}');
13+
insert into foo values(9,'j','{"a9","b9","c9"}');
14+
15+
\connect dblink_test_master
16+
17+
-- regular old dblink
18+
select * from dblink('dbname=dblink_test_slave','select * from foo') as t(a int, b text, c text[]) where t.a > 7;
19+
20+
-- should generate "no connection available" error
21+
select * from dblink('select * from foo') as t(a int, b text, c text[]) where t.a > 7;
22+
23+
-- create a persistent connection
24+
select dblink_connect('dbname=dblink_test_slave');
25+
26+
-- use the persistent connection
27+
select * from dblink('select * from foo') as t(a int, b text, c text[]) where t.a > 7;
28+
29+
-- open a cursor
30+
select dblink_open('rmt_foo_cursor','select * from foo');
31+
32+
-- fetch some data
33+
select * from dblink_fetch('rmt_foo_cursor',4) as t(a int, b text, c text[]);
34+
select * from dblink_fetch('rmt_foo_cursor',4) as t(a int, b text, c text[]);
35+
36+
-- this one only finds two rows left
37+
select * from dblink_fetch('rmt_foo_cursor',4) as t(a int, b text, c text[]);
38+
39+
-- close the cursor
40+
select dblink_close('rmt_foo_cursor');
41+
42+
-- should generate "cursor rmt_foo_cursor does not exist" error
43+
select * from dblink_fetch('rmt_foo_cursor',4) as t(a int, b text, c text[]);
44+
45+
-- close the persistent connection
46+
select dblink_disconnect();
47+
48+
-- should generate "no connection available" error
49+
select * from dblink('select * from foo') as t(a int, b text, c text[]) where t.a > 7;
50+
51+
-- put more data into our slave table, first using arbitrary connection syntax
52+
-- but truncate the actual return value so we can use diff to check for success
53+
select substr(dblink_exec('dbname=dblink_test_slave','insert into foo values(10,''k'',''{"a10","b10","c10"}'')'),1,6);
54+
55+
-- create a persistent connection
56+
select dblink_connect('dbname=dblink_test_slave');
57+
58+
-- put more data into our slave table, using persistent connection syntax
59+
-- but truncate the actual return value so we can use diff to check for success
60+
select substr(dblink_exec('insert into foo values(11,''l'',''{"a11","b11","c11"}'')'),1,6);
61+
62+
-- let's see it
63+
select * from dblink('select * from foo') as t(a int, b text, c text[]);
64+
65+
-- change some data
66+
select dblink_exec('update foo set f3[2] = ''b99'' where f1 = 11');
67+
68+
-- let's see it
69+
select * from dblink('select * from foo') as t(a int, b text, c text[]) where a = 11;
70+
71+
-- delete some data
72+
select dblink_exec('delete from foo where f1 = 11');
73+
74+
-- let's see it
75+
select * from dblink('select * from foo') as t(a int, b text, c text[]) where a = 11;
76+
77+
-- misc utilities
78+
\connect dblink_test_slave
79+
80+
-- show the currently executing query
81+
select 'hello' as hello, dblink_current_query() as query;
82+
83+
-- list the primary key fields
84+
select * from dblink_get_pkey('foo');
85+
86+
-- build an insert statement based on a local tuple,
87+
-- replacing the primary key values with new ones
88+
select dblink_build_sql_insert('foo','1 2',2,'{"0", "a"}','{"99", "xyz"}');
89+
90+
-- build an update statement based on a local tuple,
91+
-- replacing the primary key values with new ones
92+
select dblink_build_sql_update('foo','1 2',2,'{"0", "a"}','{"99", "xyz"}');
93+
94+
-- build a delete statement based on a local tuple,
95+
select dblink_build_sql_delete('foo','1 2',2,'{"0", "a"}');

‎contrib/dblink/dblink_check.sh

Lines changed: 15 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,15 @@
1+
#!/bin/sh
2+
3+
dropdb -U postgres dblink_test_master
4+
createdb -U postgres dblink_test_master
5+
psql -U postgres dblink_test_master < `pwd`/dblink.sql
6+
7+
dropdb -U postgres dblink_test_slave
8+
createdb -U postgres dblink_test_slave
9+
psql -U postgres dblink_test_slave < `pwd`/dblink.sql
10+
11+
psql -eaq -U postgres template1 < `pwd`/dblink.test.sql > dblink.test.out 2>&1
12+
diff -c ./dblink.test.expected.out `pwd`/dblink.test.out > dblink.test.diff
13+
ls -l dblink.test.diff
14+
15+

‎contrib/dblink/doc/connection

Lines changed: 53 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,53 @@
1+
==================================================================
2+
Name
3+
4+
dblink_connect -- Opens a persistent connection to a remote database
5+
6+
Synopsis
7+
8+
dblink_connect(text connstr)
9+
10+
Inputs
11+
12+
connstr
13+
14+
standard libpq format connection string,
15+
e.g. "hostaddr=127.0.0.1 port=5432 dbname=mydb user=postgres password=mypasswd"
16+
17+
Outputs
18+
19+
Returns status = "OK"
20+
21+
Example usage
22+
23+
test=# select dblink_connect('dbname=template1');
24+
dblink_connect
25+
----------------
26+
OK
27+
(1 row)
28+
29+
==================================================================
30+
Name
31+
32+
dblink_disconnect -- Closes the persistent connection to a remote database
33+
34+
Synopsis
35+
36+
dblink_disconnect()
37+
38+
Inputs
39+
40+
none
41+
42+
Outputs
43+
44+
Returns status = "OK"
45+
46+
Example usage
47+
48+
test=# select dblink_disconnect();
49+
dblink_disconnect
50+
-------------------
51+
OK
52+
(1 row)
53+

0 commit comments

Comments
 (0)