commit 3b9ded2f57a499d3380e834205bc3cc6f86b2f61 (tree)
parent 63f39c6ed84ddd526fbb1749125eab503161b34c
Author: Motiejus Jakštys <desired.mta@gmail.com>
Date: Sat, 26 Oct 2019 17:28:09 +0300
interesting queries
Diffstat:
1 file changed, 27 insertions(+), 5 deletions(-)
diff --git a/MTM/task4-straipsnis/straipsnis.md b/MTM/task4-straipsnis/straipsnis.md
@@ -80,7 +80,7 @@ SELECT
b.country AS b_country,
b.name AS b_name,
b.iata AS b_iata,
- to_char(st_distance (a.geom, b.geom, FALSE) / 1000, '99999.99') AS distance_km
+ to_char(st_distance (a.geom, b.geom, TRUE) / 1000, '99999.99') AS distance_km
FROM
airports a,
airports b
@@ -91,9 +91,21 @@ WHERE
ORDER BY
distance_km DESC
LIMIT 10;
+ a_country | a_name | a_iata | b_country | b_name | b_iata | distance_km
+------------------+-------------------------------------+--------+-------------------------+------------------------------------+--------+-------------
+ China | Zhangjiakou Ningyuan Airport | ZQZ | Argentina | Antoine de Saint Exupéry Airport | OES | 20002.42
+ Saudi Arabia | King Khaled Air Base | KMX | French Polynesia | Pukarua Airport | PUK | 20000.78
+ Indonesia | Radin Inten II (Branti) Airport | TKG | Colombia | Mariquita Airport | MQU | 20000.53
+ French Polynesia | Napuka Island Airport | NAU | Ethiopia | Axum Airport | AXU | 20000.47
+ Nicaragua | Corn Island | RNI | Cocos (Keeling) Islands | Cocos (Keeling) Islands Airport | CCK | 20000.20
+ China | Jinggangshan Airport | JGS | Argentina | Teniente Benjamin Matienzo Airport | TUC | 19999.93
+ Malaysia | Long Lellang Airport | LGL | Brazil | Tefé Airport | TFF | 19998.43
+ New Zealand | Hamilton International Airport | HLZ | Spain | Córdoba Airport | ODB | 19998.36
+ Indonesia | Sultan Mahmud Badaruddin II Airport | PLM | Colombia | Benito Salas Airport | NVA | 19998.19
+ Malaysia | Sultan Ismail Petra Airport | KBR | Peru | Chachapoyas Airport | CHH | 19998.13
```
-**Kurie du oro uosta yra arčiausiai vienas kito?**
+**Kurie oro uostai yra arčiausiai vienas kito?**
```
SELECT
a.country AS a_country,
@@ -102,7 +114,7 @@ SELECT
b.country AS b_country,
b.name AS b_name,
b.iata AS b_iata,
- to_char(st_distance (a.geom, b.geom, FALSE) / 1000, '0.99') AS distance_km
+ to_char(st_distance (a.geom, b.geom, TRUE) / 1000, '99999.99') AS distance_km
FROM
airports a,
airports b
@@ -113,10 +125,20 @@ WHERE
ORDER BY
distance_km ASC
LIMIT 10;
+ a_country | a_name | a_iata | b_country | b_name | b_iata | distance_km
+------------------+---------------------------------------+--------+------------------+-----------------------------------------------------+--------+-------------
+ Australia | Shute Harbour Airport | JHQ | Australia | Whitsunday Island Airport | WSY | 0.14
+ Papua New Guinea | Nadunumu Airport | NDN | Papua New Guinea | Kagi Airport | KGW | 1.83
+ Papua New Guinea | Kagi Airport | KGW | Papua New Guinea | Efogi Airport | EFG | 2.24
+ Rwanda | Gisenyi Airport | GYI | Congo (Kinshasa) | Goma International Airport | GOM | 2.38
+ United Kingdom | Westray Airport | WRY | United Kingdom | Papa Westray Airport | PPW | 2.83
+ Papua New Guinea | Nadunumu Airport | NDN | Papua New Guinea | Efogi Airport | EFG | 2.92
+ Papua New Guinea | Bodinumu Airport | BNM | Papua New Guinea | Kagi Airport | KGW | 3.13
+ Virgin Islands | Charlotte Amalie Harbor Seaplane Base | SPB | Virgin Islands | Cyril E. King Airport | STT | 3.46
+ United States | Brown Field Municipal Airport | SDM | Mexico | General Abelardo L. Rodríguez International Airport | TIJ | 3.59
+ French Guiana | Saint-Laurent-du-Maroni Airport | LDX | Suriname | Albina Airport | ABN | 3.71
```
-Pakeitus `DESC` į `ASC` ankstesnėje užklausoje gauname:
-
**Kokį atstumą skristume aplink žemę, jei iš Vilniaus skristume ta pačia platuma?**
**Kiek kartų reikia nuskristi United Economy klase aplink žemę Vilniaus
platumoje, kad uždirbtume [nemokamus pusryčius][2]?**
