+++ /dev/null
---
--- SELECT
---
--- btree index
--- awk '{if($1<10){print;}else{next;}}' onek.data | sort +0n -1
---
-SELECT * FROM onek
- WHERE onek.unique1 < 10
- ORDER BY onek.unique1;
- unique1 | unique2 | two | four | ten | twenty | hundred | thousand | twothousand | fivethous | tenthous | odd | even | stringu1 | stringu2 | string4
----------+---------+-----+------+-----+--------+---------+----------+-------------+-----------+----------+-----+------+----------+----------+---------
- 0 | 998 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | AAAAAA | KMBAAA | OOOOxx
- 1 | 214 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 3 | BAAAAA | GIAAAA | OOOOxx
- 2 | 326 | 0 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 4 | 5 | CAAAAA | OMAAAA | OOOOxx
- 3 | 431 | 1 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 6 | 7 | DAAAAA | PQAAAA | VVVVxx
- 4 | 833 | 0 | 0 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 8 | 9 | EAAAAA | BGBAAA | HHHHxx
- 5 | 541 | 1 | 1 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 10 | 11 | FAAAAA | VUAAAA | HHHHxx
- 6 | 978 | 0 | 2 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 12 | 13 | GAAAAA | QLBAAA | OOOOxx
- 7 | 647 | 1 | 3 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 14 | 15 | HAAAAA | XYAAAA | VVVVxx
- 8 | 653 | 0 | 0 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 16 | 17 | IAAAAA | DZAAAA | HHHHxx
- 9 | 49 | 1 | 1 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 18 | 19 | JAAAAA | XBAAAA | HHHHxx
-(10 rows)
-
---
--- awk '{if($1<20){print $1,$14;}else{next;}}' onek.data | sort +0nr -1
---
-SELECT onek.unique1, onek.stringu1 FROM onek
- WHERE onek.unique1 < 20
- ORDER BY unique1 using >;
- unique1 | stringu1
----------+----------
- 19 | TAAAAA
- 18 | SAAAAA
- 17 | RAAAAA
- 16 | QAAAAA
- 15 | PAAAAA
- 14 | OAAAAA
- 13 | NAAAAA
- 12 | MAAAAA
- 11 | LAAAAA
- 10 | KAAAAA
- 9 | JAAAAA
- 8 | IAAAAA
- 7 | HAAAAA
- 6 | GAAAAA
- 5 | FAAAAA
- 4 | EAAAAA
- 3 | DAAAAA
- 2 | CAAAAA
- 1 | BAAAAA
- 0 | AAAAAA
-(20 rows)
-
---
--- awk '{if($1>980){print $1,$14;}else{next;}}' onek.data | sort +1d -2
---
-SELECT onek.unique1, onek.stringu1 FROM onek
- WHERE onek.unique1 > 980
- ORDER BY stringu1 using <;
- unique1 | stringu1
----------+----------
- 988 | AMAAAA
- 989 | BMAAAA
- 990 | CMAAAA
- 991 | DMAAAA
- 992 | EMAAAA
- 993 | FMAAAA
- 994 | GMAAAA
- 995 | HMAAAA
- 996 | IMAAAA
- 997 | JMAAAA
- 998 | KMAAAA
- 999 | LMAAAA
- 981 | TLAAAA
- 982 | ULAAAA
- 983 | VLAAAA
- 984 | WLAAAA
- 985 | XLAAAA
- 986 | YLAAAA
- 987 | ZLAAAA
-(19 rows)
-
-
---
--- awk '{if($1>980){print $1,$16;}else{next;}}' onek.data |
--- sort +1d -2 +0nr -1
---
-SELECT onek.unique1, onek.string4 FROM onek
- WHERE onek.unique1 > 980
- ORDER BY string4 using <, unique1 using >;
- unique1 | string4
----------+---------
- 999 | AAAAxx
- 995 | AAAAxx
- 983 | AAAAxx
- 982 | AAAAxx
- 981 | AAAAxx
- 998 | HHHHxx
- 997 | HHHHxx
- 993 | HHHHxx
- 990 | HHHHxx
- 986 | HHHHxx
- 996 | OOOOxx
- 991 | OOOOxx
- 988 | OOOOxx
- 987 | OOOOxx
- 985 | OOOOxx
- 994 | VVVVxx
- 992 | VVVVxx
- 989 | VVVVxx
- 984 | VVVVxx
-(19 rows)
-
-
---
--- awk '{if($1>980){print $1,$16;}else{next;}}' onek.data |
--- sort +1dr -2 +0n -1
---
-SELECT onek.unique1, onek.string4 FROM onek
- WHERE onek.unique1 > 980
- ORDER BY string4 using >, unique1 using <;
- unique1 | string4
----------+---------
- 984 | VVVVxx
- 989 | VVVVxx
- 992 | VVVVxx
- 994 | VVVVxx
- 985 | OOOOxx
- 987 | OOOOxx
- 988 | OOOOxx
- 991 | OOOOxx
- 996 | OOOOxx
- 986 | HHHHxx
- 990 | HHHHxx
- 993 | HHHHxx
- 997 | HHHHxx
- 998 | HHHHxx
- 981 | AAAAxx
- 982 | AAAAxx
- 983 | AAAAxx
- 995 | AAAAxx
- 999 | AAAAxx
-(19 rows)
-
-
---
--- awk '{if($1<20){print $1,$16;}else{next;}}' onek.data |
--- sort +0nr -1 +1d -2
---
-SELECT onek.unique1, onek.string4 FROM onek
- WHERE onek.unique1 < 20
- ORDER BY unique1 using >, string4 using <;
- unique1 | string4
----------+---------
- 19 | OOOOxx
- 18 | VVVVxx
- 17 | HHHHxx
- 16 | OOOOxx
- 15 | VVVVxx
- 14 | AAAAxx
- 13 | OOOOxx
- 12 | AAAAxx
- 11 | OOOOxx
- 10 | AAAAxx
- 9 | HHHHxx
- 8 | HHHHxx
- 7 | VVVVxx
- 6 | OOOOxx
- 5 | HHHHxx
- 4 | HHHHxx
- 3 | VVVVxx
- 2 | OOOOxx
- 1 | OOOOxx
- 0 | OOOOxx
-(20 rows)
-
---
--- awk '{if($1<20){print $1,$16;}else{next;}}' onek.data |
--- sort +0n -1 +1dr -2
---
-SELECT onek.unique1, onek.string4 FROM onek
- WHERE onek.unique1 < 20
- ORDER BY unique1 using <, string4 using >;
- unique1 | string4
----------+---------
- 0 | OOOOxx
- 1 | OOOOxx
- 2 | OOOOxx
- 3 | VVVVxx
- 4 | HHHHxx
- 5 | HHHHxx
- 6 | OOOOxx
- 7 | VVVVxx
- 8 | HHHHxx
- 9 | HHHHxx
- 10 | AAAAxx
- 11 | OOOOxx
- 12 | AAAAxx
- 13 | OOOOxx
- 14 | AAAAxx
- 15 | VVVVxx
- 16 | OOOOxx
- 17 | HHHHxx
- 18 | VVVVxx
- 19 | OOOOxx
-(20 rows)
-
---
--- test partial btree indexes
---
--- As of 7.2, planner probably won't pick an indexscan without stats,
--- so ANALYZE first. Also, we want to prevent it from picking a bitmapscan
--- followed by sort, because that could hide index ordering problems.
---
-ANALYZE onek2;
-SET enable_seqscan TO off;
-SET enable_bitmapscan TO off;
-SET enable_sort TO off;
---
--- awk '{if($1<10){print $0;}else{next;}}' onek.data | sort +0n -1
---
-SELECT onek2.* FROM onek2 WHERE onek2.unique1 < 10;
- unique1 | unique2 | two | four | ten | twenty | hundred | thousand | twothousand | fivethous | tenthous | odd | even | stringu1 | stringu2 | string4
----------+---------+-----+------+-----+--------+---------+----------+-------------+-----------+----------+-----+------+----------+----------+---------
- 0 | 998 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | AAAAAA | KMBAAA | OOOOxx
- 1 | 214 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 3 | BAAAAA | GIAAAA | OOOOxx
- 2 | 326 | 0 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 4 | 5 | CAAAAA | OMAAAA | OOOOxx
- 3 | 431 | 1 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 6 | 7 | DAAAAA | PQAAAA | VVVVxx
- 4 | 833 | 0 | 0 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 8 | 9 | EAAAAA | BGBAAA | HHHHxx
- 5 | 541 | 1 | 1 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 10 | 11 | FAAAAA | VUAAAA | HHHHxx
- 6 | 978 | 0 | 2 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 12 | 13 | GAAAAA | QLBAAA | OOOOxx
- 7 | 647 | 1 | 3 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 14 | 15 | HAAAAA | XYAAAA | VVVVxx
- 8 | 653 | 0 | 0 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 16 | 17 | IAAAAA | DZAAAA | HHHHxx
- 9 | 49 | 1 | 1 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 18 | 19 | JAAAAA | XBAAAA | HHHHxx
-(10 rows)
-
---
--- awk '{if($1<20){print $1,$14;}else{next;}}' onek.data | sort +0nr -1
---
-SELECT onek2.unique1, onek2.stringu1 FROM onek2
- WHERE onek2.unique1 < 20
- ORDER BY unique1 using >;
- unique1 | stringu1
----------+----------
- 19 | TAAAAA
- 18 | SAAAAA
- 17 | RAAAAA
- 16 | QAAAAA
- 15 | PAAAAA
- 14 | OAAAAA
- 13 | NAAAAA
- 12 | MAAAAA
- 11 | LAAAAA
- 10 | KAAAAA
- 9 | JAAAAA
- 8 | IAAAAA
- 7 | HAAAAA
- 6 | GAAAAA
- 5 | FAAAAA
- 4 | EAAAAA
- 3 | DAAAAA
- 2 | CAAAAA
- 1 | BAAAAA
- 0 | AAAAAA
-(20 rows)
-
---
--- awk '{if($1>980){print $1,$14;}else{next;}}' onek.data | sort +1d -2
---
-SELECT onek2.unique1, onek2.stringu1 FROM onek2
- WHERE onek2.unique1 > 980;
- unique1 | stringu1
----------+----------
- 981 | TLAAAA
- 982 | ULAAAA
- 983 | VLAAAA
- 984 | WLAAAA
- 985 | XLAAAA
- 986 | YLAAAA
- 987 | ZLAAAA
- 988 | AMAAAA
- 989 | BMAAAA
- 990 | CMAAAA
- 991 | DMAAAA
- 992 | EMAAAA
- 993 | FMAAAA
- 994 | GMAAAA
- 995 | HMAAAA
- 996 | IMAAAA
- 997 | JMAAAA
- 998 | KMAAAA
- 999 | LMAAAA
-(19 rows)
-
-RESET enable_seqscan;
-RESET enable_bitmapscan;
-RESET enable_sort;
-SELECT two, stringu1, ten, string4
- INTO TABLE tmp
- FROM onek;
---
--- awk '{print $1,$2;}' person.data |
--- awk '{if(NF!=2){print $3,$2;}else{print;}}' - emp.data |
--- awk '{if(NF!=2){print $3,$2;}else{print;}}' - student.data |
--- awk 'BEGIN{FS=" ";}{if(NF!=2){print $4,$5;}else{print;}}' - stud_emp.data
---
--- SELECT name, age FROM person*; ??? check if different
-SELECT p.name, p.age FROM person* p;
- name | age
----------+-----
- mike | 40
- joe | 20
- sally | 34
- sandra | 19
- alex | 30
- sue | 50
- denise | 24
- sarah | 88
- teresa | 38
- nan | 28
- leah | 68
- wendy | 78
- melissa | 28
- joan | 18
- mary | 8
- jane | 58
- liza | 38
- jean | 28
- jenifer | 38
- juanita | 58
- susan | 78
- zena | 98
- martie | 88
- chris | 78
- pat | 18
- zola | 58
- louise | 98
- edna | 18
- bertha | 88
- sumi | 38
- koko | 88
- gina | 18
- rean | 48
- sharon | 78
- paula | 68
- julie | 68
- belinda | 38
- karen | 48
- carina | 58
- diane | 18
- esther | 98
- trudy | 88
- fanny | 8
- carmen | 78
- lita | 25
- pamela | 48
- sandy | 38
- trisha | 88
- vera | 78
- velma | 68
- sharon | 25
- sam | 30
- bill | 20
- fred | 28
- larry | 60
- jeff | 23
- cim | 30
- linda | 19
-(58 rows)
-
---
--- awk '{print $1,$2;}' person.data |
--- awk '{if(NF!=2){print $3,$2;}else{print;}}' - emp.data |
--- awk '{if(NF!=2){print $3,$2;}else{print;}}' - student.data |
--- awk 'BEGIN{FS=" ";}{if(NF!=1){print $4,$5;}else{print;}}' - stud_emp.data |
--- sort +1nr -2
---
-SELECT p.name, p.age FROM person* p ORDER BY age using >, name;
- name | age
----------+-----
- esther | 98
- louise | 98
- zena | 98
- bertha | 88
- koko | 88
- martie | 88
- sarah | 88
- trisha | 88
- trudy | 88
- carmen | 78
- chris | 78
- sharon | 78
- susan | 78
- wendy | 78
- vera | 78
- julie | 68
- leah | 68
- paula | 68
- velma | 68
- larry | 60
- carina | 58
- jane | 58
- juanita | 58
- zola | 58
- sue | 50
- karen | 48
- pamela | 48
- rean | 48
- mike | 40
- belinda | 38
- jenifer | 38
- liza | 38
- sandy | 38
- sumi | 38
- teresa | 38
- sally | 34
- alex | 30
- cim | 30
- sam | 30
- fred | 28
- jean | 28
- melissa | 28
- nan | 28
- lita | 25
- sharon | 25
- denise | 24
- jeff | 23
- bill | 20
- joe | 20
- linda | 19
- sandra | 19
- diane | 18
- edna | 18
- gina | 18
- joan | 18
- pat | 18
- fanny | 8
- mary | 8
-(58 rows)
-
---
--- Test some cases involving whole-row Var referencing a subquery
---
-select foo from (select 1) as foo;
- foo
------
- (1)
-(1 row)
-
-select foo from (select null) as foo;
- foo
------
- ()
-(1 row)
-
-select foo from (select 'xyzzy',1,null) as foo;
- foo
-------------
- (xyzzy,1,)
-(1 row)
-
---
--- Test VALUES lists
---
-select * from onek, (values(147, 'RFAAAA'), (931, 'VJAAAA')) as v (i, j)
- WHERE onek.unique1 = v.i and onek.stringu1 = v.j;
- unique1 | unique2 | two | four | ten | twenty | hundred | thousand | twothousand | fivethous | tenthous | odd | even | stringu1 | stringu2 | string4 | i | j
----------+---------+-----+------+-----+--------+---------+----------+-------------+-----------+----------+-----+------+----------+----------+---------+-----+--------
- 147 | 0 | 1 | 3 | 7 | 7 | 7 | 47 | 147 | 147 | 147 | 14 | 15 | RFAAAA | AAAAAA | AAAAxx | 147 | RFAAAA
- 931 | 1 | 1 | 3 | 1 | 11 | 1 | 31 | 131 | 431 | 931 | 2 | 3 | VJAAAA | BAAAAA | HHHHxx | 931 | VJAAAA
-(2 rows)
-
--- a more complex case
--- looks like we're coding lisp :-)
-select * from onek,
- (values ((select i from
- (values(10000), (2), (389), (1000), (2000), ((select 10029))) as foo(i)
- order by i asc limit 1))) bar (i)
- where onek.unique1 = bar.i;
- unique1 | unique2 | two | four | ten | twenty | hundred | thousand | twothousand | fivethous | tenthous | odd | even | stringu1 | stringu2 | string4 | i
----------+---------+-----+------+-----+--------+---------+----------+-------------+-----------+----------+-----+------+----------+----------+---------+---
- 2 | 326 | 0 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 4 | 5 | CAAAAA | OMAAAA | OOOOxx | 2
-(1 row)
-
--- try VALUES in a subquery
-select * from onek
- where (unique1,ten) in (values (1,1), (20,0), (99,9), (17,99))
- order by unique1;
- unique1 | unique2 | two | four | ten | twenty | hundred | thousand | twothousand | fivethous | tenthous | odd | even | stringu1 | stringu2 | string4
----------+---------+-----+------+-----+--------+---------+----------+-------------+-----------+----------+-----+------+----------+----------+---------
- 1 | 214 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 3 | BAAAAA | GIAAAA | OOOOxx
- 20 | 306 | 0 | 0 | 0 | 0 | 0 | 20 | 20 | 20 | 20 | 0 | 1 | UAAAAA | ULAAAA | OOOOxx
- 99 | 101 | 1 | 3 | 9 | 19 | 9 | 99 | 99 | 99 | 99 | 18 | 19 | VDAAAA | XDAAAA | HHHHxx
-(3 rows)
-
--- VALUES is also legal as a standalone query or a set-operation member
-VALUES (1,2), (3,4+4), (7,77.7);
- column1 | column2
----------+---------
- 1 | 2
- 3 | 8
- 7 | 77.7
-(3 rows)
-
-VALUES (1,2), (3,4+4), (7,77.7)
-UNION ALL
-SELECT 2+2, 57
-UNION ALL
-SELECT * FROM int8_tbl;
- column1 | column2
-------------------+-------------------
- 1 | 2
- 3 | 8
- 7 | 77.7
- 4 | 57
- 123 | 456
- 123 | 4567890123456789
- 4567890123456789 | 123
- 4567890123456789 | 4567890123456789
- 4567890123456789 | -4567890123456789
-(9 rows)
-
---
--- Test ORDER BY options
---
-CREATE TEMP TABLE foo (f1 int);
-INSERT INTO foo VALUES (42),(3),(10),(7),(null),(null),(1);
-SELECT * FROM foo ORDER BY f1;
- f1
-----
- 1
- 3
- 7
- 10
- 42
-
-
-(7 rows)
-
-SELECT * FROM foo ORDER BY f1 ASC; -- same thing
- f1
-----
- 1
- 3
- 7
- 10
- 42
-
-
-(7 rows)
-
-SELECT * FROM foo ORDER BY f1 NULLS FIRST;
- f1
-----
-
-
- 1
- 3
- 7
- 10
- 42
-(7 rows)
-
-SELECT * FROM foo ORDER BY f1 DESC;
- f1
-----
-
-
- 42
- 10
- 7
- 3
- 1
-(7 rows)
-
-SELECT * FROM foo ORDER BY f1 DESC NULLS LAST;
- f1
-----
- 42
- 10
- 7
- 3
- 1
-
-
-(7 rows)
-
--- check if indexscans do the right things
-CREATE INDEX fooi ON foo (f1);
-SET enable_sort = false;
-SELECT * FROM foo ORDER BY f1;
- f1
-----
- 1
- 3
- 7
- 10
- 42
-
-
-(7 rows)
-
-SELECT * FROM foo ORDER BY f1 NULLS FIRST;
- f1
-----
-
-
- 1
- 3
- 7
- 10
- 42
-(7 rows)
-
-SELECT * FROM foo ORDER BY f1 DESC;
- f1
-----
-
-
- 42
- 10
- 7
- 3
- 1
-(7 rows)
-
-SELECT * FROM foo ORDER BY f1 DESC NULLS LAST;
- f1
-----
- 42
- 10
- 7
- 3
- 1
-
-
-(7 rows)
-
-DROP INDEX fooi;
-CREATE INDEX fooi ON foo (f1 DESC);
-SELECT * FROM foo ORDER BY f1;
- f1
-----
- 1
- 3
- 7
- 10
- 42
-
-
-(7 rows)
-
-SELECT * FROM foo ORDER BY f1 NULLS FIRST;
- f1
-----
-
-
- 1
- 3
- 7
- 10
- 42
-(7 rows)
-
-SELECT * FROM foo ORDER BY f1 DESC;
- f1
-----
-
-
- 42
- 10
- 7
- 3
- 1
-(7 rows)
-
-SELECT * FROM foo ORDER BY f1 DESC NULLS LAST;
- f1
-----
- 42
- 10
- 7
- 3
- 1
-
-
-(7 rows)
-
-DROP INDEX fooi;
-CREATE INDEX fooi ON foo (f1 DESC NULLS LAST);
-SELECT * FROM foo ORDER BY f1;
- f1
-----
- 1
- 3
- 7
- 10
- 42
-
-
-(7 rows)
-
-SELECT * FROM foo ORDER BY f1 NULLS FIRST;
- f1
-----
-
-
- 1
- 3
- 7
- 10
- 42
-(7 rows)
-
-SELECT * FROM foo ORDER BY f1 DESC;
- f1
-----
-
-
- 42
- 10
- 7
- 3
- 1
-(7 rows)
-
-SELECT * FROM foo ORDER BY f1 DESC NULLS LAST;
- f1
-----
- 42
- 10
- 7
- 3
- 1
-
-
-(7 rows)
-
---
--- Test some corner cases that have been known to confuse the planner
---
--- ORDER BY on a constant doesn't really need any sorting
-SELECT 1 AS x ORDER BY x;
- x
----
- 1
-(1 row)
-
--- But ORDER BY on a set-valued expression does
-create function sillysrf(int) returns setof int as
- 'values (1),(10),(2),($1)' language sql immutable;
-select sillysrf(42);
- sillysrf
-----------
- 1
- 10
- 2
- 42
-(4 rows)
-
-select sillysrf(-1) order by 1;
- sillysrf
-----------
- -1
- 1
- 2
- 10
-(4 rows)
-
-drop function sillysrf(int);
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