Correct regression test copyselect

The SQL queries used in this test were plain copies so the output could not be
consistent because of Postgres-XC cluster structure. Such Copy output is now simply
managed by a SELECT with ORDER BY on serial ID.

2 files changed, 129 insertions, 3 deletions

diff --git a/src/test/regress/expected/copyselect_1.out b/src/test/regress/expected/copyselect_1.out
new file mode 100644
index 0000000000..b47082f54d
--- /dev/null
+++ b/src/test/regress/expected/copyselect_1.out
@@ -0,0 +1,126 @@
+--
+-- Test cases for COPY (select) TO
+--
+create table test1 (id serial, t text);
+NOTICE:  CREATE TABLE will create implicit sequence "test1_id_seq" for serial column "test1.id"
+insert into test1 (t) values ('a');
+insert into test1 (t) values ('b');
+insert into test1 (t) values ('c');
+insert into test1 (t) values ('d');
+insert into test1 (t) values ('e');
+create table test2 (id serial, t text);
+NOTICE:  CREATE TABLE will create implicit sequence "test2_id_seq" for serial column "test2.id"
+insert into test2 (t) values ('A');
+insert into test2 (t) values ('B');
+insert into test2 (t) values ('C');
+insert into test2 (t) values ('D');
+insert into test2 (t) values ('E');
+create view v_test1
+as select 'v_'||t from test1;
+--
+-- Test COPY table TO
+--
+copy (select * from test1 order by 1) to stdout;
+1	a
+2	b
+3	c
+4	d
+5	e
+--
+-- This should fail
+--
+copy v_test1 to stdout;
+ERROR:  cannot copy from view "v_test1"
+HINT:  Try the COPY (SELECT ...) TO variant.
+--
+-- Test COPY (select) TO
+--
+copy (select t from test1 where id=1) to stdout;
+a
+--
+-- Test COPY (select for update) TO
+--
+copy (select t from test1 where id=3 for update) to stdout;
+c
+--
+-- This should fail
+--
+copy (select t into temp test3 from test1 where id=3) to stdout;
+ERROR:  COPY (SELECT INTO) is not supported
+--
+-- This should fail
+--
+copy (select * from test1) from stdin;
+ERROR:  syntax error at or near "from"
+LINE 1: copy (select * from test1) from stdin;
+                                   ^
+--
+-- This should fail
+--
+copy (select * from test1) (t,id) to stdout;
+ERROR:  syntax error at or near "("
+LINE 1: copy (select * from test1) (t,id) to stdout;
+                                   ^
+--
+-- Test JOIN
+--
+copy (select * from test1 join test2 using (id) order by 1) to stdout;
+1	a	A
+2	b	B
+3	c	C
+4	d	D
+5	e	E
+--
+-- Test UNION SELECT
+--
+copy (select t from test1 where id = 1 UNION select * from v_test1 ORDER BY 1) to stdout;
+a
+v_a
+v_b
+v_c
+v_d
+v_e
+--
+-- Test subselect
+--
+copy (select * from (select t from test1 where id = 1 UNION select * from v_test1 ORDER BY 1) t1) to stdout;
+a
+v_a
+v_b
+v_c
+v_d
+v_e
+--
+-- Test headers, CSV and quotes
+--
+copy (select t from test1 where id = 1) to stdout csv header force quote t;
+t
+"a"
+--
+-- Test psql builtins, plain table
+--
+\copy (select * from test1 order by 1) to stdout
+1	a
+2	b
+3	c
+4	d
+5	e
+--
+-- This should fail
+--
+\copy v_test1 to stdout
+ERROR:  cannot copy from view "v_test1"
+HINT:  Try the COPY (SELECT ...) TO variant.
+\copy: ERROR:  cannot copy from view "v_test1"
+HINT:  Try the COPY (SELECT ...) TO variant.
+--
+-- Test \copy (select ...)
+--
+\copy (select "id",'id','id""'||t,(id + 1)*id,t,"test1"."t" from test1 where id=3) to stdout
+3	id	id""c	12	c	c
+--
+-- Drop everything
+--
+drop table test2;
+drop view v_test1;
+drop table test1;
diff --git a/src/test/regress/sql/copyselect.sql b/src/test/regress/sql/copyselect.sql
index 621d49444d..8f5260737c 100644
--- a/src/test/regress/sql/copyselect.sql
+++ b/src/test/regress/sql/copyselect.sql
@@ -21,7 +21,7 @@ as select 'v_'||t from test1;
 --
 -- Test COPY table TO
 --
-copy test1 to stdout;
+copy (select * from test1 order by 1) to stdout;
 --
 -- This should fail
 --
@@ -49,7 +49,7 @@ copy (select * from test1) (t,id) to stdout;
 --
 -- Test JOIN
 --
-copy (select * from test1 join test2 using (id)) to stdout;
+copy (select * from test1 join test2 using (id) order by 1) to stdout;
 --
 -- Test UNION SELECT
 --
@@ -65,7 +65,7 @@ copy (select t from test1 where id = 1) to stdout csv header force quote t;
 --
 -- Test psql builtins, plain table
 --
-\copy test1 to stdout
+\copy (select * from test1 order by 1) to stdout
 --
 -- This should fail
 --