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	<title>zlika&#039;s &#187; MySQL</title>
	<atom:link href="http://zlika.org/index.php/category/it/mysql/feed/" rel="self" type="application/rss+xml" />
	<link>http://zlika.org</link>
	<description>Think SMART!</description>
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		<title>Join Tables in MS SQL &#8211; FROM or WHERE clause?</title>
		<link>http://zlika.org/index.php/2010/01/21/linking-tables-in-sql-from-of-where-clause/</link>
		<comments>http://zlika.org/index.php/2010/01/21/linking-tables-in-sql-from-of-where-clause/#comments</comments>
		<pubDate>Fri, 22 Jan 2010 02:16:12 +0000</pubDate>
		<dc:creator>zlika</dc:creator>
				<category><![CDATA[IT]]></category>
		<category><![CDATA[MS SQL Server]]></category>
		<category><![CDATA[MySQL]]></category>
		<category><![CDATA[SSMS]]></category>
		<category><![CDATA[Transact-SQL]]></category>

		<guid isPermaLink="false">http://zlika.org/?p=171</guid>
		<description><![CDATA[I was interested of the different SQL &#8220;accents&#8221;. According to Microsoft SQL Server learning books, we query like this:

SELECT
 *

FROM
 table1 INNER JOIN table2
  ON table1.PK = table2.FK
GO


The MySQL guys makes queries like this:

SELECT *
FROM table1, table2
WHERE table1.PK = table2.FK;

Using Microsoft SQL Server 2008, I wrote a script to create and populate two tables [...]]]></description>
			<content:encoded><![CDATA[<p>I was interested of the different SQL &#8220;accents&#8221;. According to Microsoft SQL Server learning books, we query like this:</p>
<pre class="brush: sql;">
SELECT
 *

FROM
 table1 INNER JOIN table2
  ON table1.PK = table2.FK
GO
</pre>
<p><span id="more-171"></span></p>
<p>The MySQL guys makes queries like this:</p>
<pre class="brush: sql;">
SELECT *
FROM table1, table2
WHERE table1.PK = table2.FK;
</pre>
<p>Using Microsoft SQL Server 2008, I wrote a script to create and populate two tables (the model data is found somewhere in internet).</p>
<pre class="brush: sql; collapse: true; light: false; toolbar: true;">
IF EXISTS (
SELECT 1
 FROM sys.objects
 WHERE OBJECT_ID = OBJECT_ID(N'City')
 AND type = (N'U')
)
DROP TABLE City
GO

IF EXISTS (
 SELECT 1
 FROM sys.objects
 WHERE OBJECT_ID = OBJECT_ID(N'Country')
 AND type = (N'U')
)
DROP TABLE Country
GO

CREATE TABLE Country (
 CountryID INT IDENTITY(1, 1) NOT NULL PRIMARY KEY CLUSTERED
 , CountryName VARCHAR(50) NOT NULL
)
GO

CREATE TABLE City (
 CityID INT IDENTITY(1, 1) NOT NULL PRIMARY KEY CLUSTERED
 , CityName VARCHAR(50) NOT NULL
 , CountryID INT NOT NULL REFERENCES Country(CountryID)
)
GO

INSERT INTO Country (CountryName) VALUES
('Afghanistan')
, ('Algeria')
, ('American Samoa')
, ('Angola')
, ('Anguilla')
, ('Argentina')
, ('Armenia')
, ('Australia')
, ('Austria')
, ('Azerbaijan')
, ('Bahrain')
, ('Bangladesh')
, ('Belarus')
, ('Bolivia')
, ('Brazil')
, ('Brunei')
, ('Bulgaria')
, ('Cambodia')
, ('Cameroon')
, ('Canada')
, ('Chad')
, ('Chile')
, ('China')
, ('Colombia')
, ('Congo, The Democratic Republic of the')
, ('Czech Republic')
, ('Dominican Republic')
, ('Ecuador')
, ('Egypt')
, ('Estonia')
, ('Ethiopia')
, ('Faroe Islands')
, ('Finland')
, ('France')
, ('French Guiana')
, ('French Polynesia')
, ('Gambia')
, ('Germany')
, ('Greece')
, ('Greenland')
, ('Holy See (Vatican City State)')
, ('Hong Kong')
, ('Hungary')
, ('India')
, ('Indonesia')
, ('Iran')
, ('Iraq')
, ('Israel')
, ('Italy')
, ('Japan')
, ('Kazakstan')
, ('Kenya')
, ('Kuwait')
, ('Latvia')
, ('Liechtenstein')
, ('Lithuania')
, ('Madagascar')
, ('Malawi')
, ('Malaysia')
, ('Mexico')
, ('Moldova')
, ('Morocco')
, ('Mozambique')
, ('Myanmar')
, ('Nauru')
, ('Nepal')
, ('Netherlands')
, ('New Zealand')
, ('Nigeria')
, ('North Korea')
, ('Oman')
, ('Pakistan')
, ('Paraguay')
, ('Peru')
, ('Philippines')
, ('Poland')
, ('Puerto Rico')
, ('Romania')
, ('Runion')
, ('Russian Federation')
, ('Saint Vincent and the Grenadines')
, ('Saudi Arabia')
, ('Senegal')
, ('Slovakia')
, ('South Africa')
, ('South Korea')
, ('Spain')
, ('Sri Lanka')
, ('Sudan')
, ('Sweden')
, ('Switzerland')
, ('Taiwan')
, ('Tanzania')
, ('Thailand')
, ('Tonga')
, ('Tunisia')
, ('Turkey')
, ('Turkmenistan')
, ('Tuvalu')
, ('Ukraine')
, ('United Arab Emirates')
, ('United Kingdom')
, ('United States')
, ('Venezuela')
, ('Vietnam')
, ('Virgin Islands, U.S.')
, ('Yemen')
, ('Yugoslavia')
, ('Zambia')
GO

INSERT INTO City (CityName, CountryID) VALUES
('A Corua (La Corua)', 87)
, ('Abha', 82)
, ('Abu Dhabi', 101)
, ('Acua', 60)
, ('Adana', 97)
, ('Addis Abeba', 31)
, ('Aden', 107)
, ('Adoni', 44)
, ('Ahmadnagar', 44)
, ('Akishima', 50)
, ('Akron', 103)
, ('al-Ayn', 101)
, ('al-Hawiya', 82)
, ('al-Manama', 11)
, ('al-Qadarif', 89)
, ('al-Qatif', 82)
, ('Alessandria', 49)
, ('Allappuzha (Alleppey)', 44)
, ('Allende', 60)
, ('Almirante Brown', 6)
, ('Alvorada', 15)
, ('Ambattur', 44)
, ('Amersfoort', 67)
, ('Amroha', 44)
, ('Angra dos Reis', 15)
, ('Anpolis', 15)
, ('Antofagasta', 22)
, ('Aparecida de Goinia', 15)
, ('Apeldoorn', 67)
, ('Araatuba', 15)
, ('Arak', 46)
, ('Arecibo', 77)
, ('Arlington', 103)
, ('Ashdod', 48)
, ('Ashgabat', 98)
, ('Ashqelon', 48)
, ('Asuncin', 73)
, ('Athenai', 39)
, ('Atinsk', 80)
, ('Atlixco', 60)
, ('Augusta-Richmond County', 103)
, ('Aurora', 103)
, ('Avellaneda', 6)
, ('Bag', 15)
, ('Baha Blanca', 6)
, ('Baicheng', 23)
, ('Baiyin', 23)
, ('Baku', 10)
, ('Balaiha', 80)
, ('Balikesir', 97)
, ('Balurghat', 44)
, ('Bamenda', 19)
, ('Bandar Seri Begawan', 16)
, ('Banjul', 37)
, ('Barcelona', 104)
, ('Basel', 91)
, ('Bat Yam', 48)
, ('Batman', 97)
, ('Batna', 2)
, ('Battambang', 18)
, ('Baybay', 75)
, ('Bayugan', 75)
, ('Bchar', 2)
, ('Beira', 63)
, ('Bellevue', 103)
, ('Belm', 15)
, ('Benguela', 4)
, ('Beni-Mellal', 62)
, ('Benin City', 69)
, ('Bergamo', 49)
, ('Berhampore (Baharampur)', 44)
, ('Bern', 91)
, ('Bhavnagar', 44)
, ('Bhilwara', 44)
, ('Bhimavaram', 44)
, ('Bhopal', 44)
, ('Bhusawal', 44)
, ('Bijapur', 44)
, ('Bilbays', 29)
, ('Binzhou', 23)
, ('Birgunj', 66)
, ('Bislig', 75)
, ('Blumenau', 15)
, ('Boa Vista', 15)
, ('Boksburg', 85)
, ('Botosani', 78)
, ('Botshabelo', 85)
, ('Bradford', 102)
, ('Braslia', 15)
, ('Bratislava', 84)
, ('Brescia', 49)
, ('Brest', 34)
, ('Brindisi', 49)
, ('Brockton', 103)
, ('Bucuresti', 78)
, ('Buenaventura', 24)
, ('Bydgoszcz', 76)
, ('Cabuyao', 75)
, ('Callao', 74)
, ('Cam Ranh', 105)
, ('Cape Coral', 103)
, ('Caracas', 104)
, ('Carmen', 60)
, ('Cavite', 75)
, ('Cayenne', 35)
, ('Celaya', 60)
, ('Chandrapur', 44)
, ('Changhwa', 92)
, ('Changzhou', 23)
, ('Chapra', 44)
, ('Charlotte Amalie', 106)
, ('Chatsworth', 85)
, ('Cheju', 86)
, ('Chiayi', 92)
, ('Chisinau', 61)
, ('Chungho', 92)
, ('Cianjur', 45)
, ('Ciomas', 45)
, ('Ciparay', 45)
, ('Citrus Heights', 103)
, ('Citt del Vaticano', 41)
, ('Ciudad del Este', 73)
, ('Clarksville', 103)
, ('Coacalco de Berriozbal', 60)
, ('Coatzacoalcos', 60)
, ('Compton', 103)
, ('Coquimbo', 22)
, ('Crdoba', 6)
, ('Cuauhtmoc', 60)
, ('Cuautla', 60)
, ('Cuernavaca', 60)
, ('Cuman', 104)
, ('Czestochowa', 76)
, ('Dadu', 72)
, ('Dallas', 103)
, ('Datong', 23)
, ('Daugavpils', 54)
, ('Davao', 75)
, ('Daxian', 23)
, ('Dayton', 103)
, ('Deba Habe', 69)
, ('Denizli', 97)
, ('Dhaka', 12)
, ('Dhule (Dhulia)', 44)
, ('Dongying', 23)
, ('Donostia-San Sebastin', 87)
, ('Dos Quebradas', 24)
, ('Duisburg', 38)
, ('Dundee', 102)
, ('Dzerzinsk', 80)
, ('Ede', 67)
, ('Effon-Alaiye', 69)
, ('El Alto', 14)
, ('El Fuerte', 60)
, ('El Monte', 103)
, ('Elista', 80)
, ('Emeishan', 23)
, ('Emmen', 67)
, ('Enshi', 23)
, ('Erlangen', 38)
, ('Escobar', 6)
, ('Esfahan', 46)
, ('Eskisehir', 97)
, ('Etawah', 44)
, ('Ezeiza', 6)
, ('Ezhou', 23)
, ('Faaa', 36)
, ('Fengshan', 92)
, ('Firozabad', 44)
, ('Florencia', 24)
, ('Fontana', 103)
, ('Fukuyama', 50)
, ('Funafuti', 99)
, ('Fuyu', 23)
, ('Fuzhou', 23)
, ('Gandhinagar', 44)
, ('Garden Grove', 103)
, ('Garland', 103)
, ('Gatineau', 20)
, ('Gaziantep', 97)
, ('Gijn', 87)
, ('Gingoog', 75)
, ('Goinia', 15)
, ('Gorontalo', 45)
, ('Grand Prairie', 103)
, ('Graz', 9)
, ('Greensboro', 103)
, ('Guadalajara', 60)
, ('Guaruj', 15)
, ('guas Lindas de Gois', 15)
, ('Gulbarga', 44)
, ('Hagonoy', 75)
, ('Haining', 23)
, ('Haiphong', 105)
, ('Haldia', 44)
, ('Halifax', 20)
, ('Halisahar', 44)
, ('Halle/Saale', 38)
, ('Hami', 23)
, ('Hamilton', 68)
, ('Hanoi', 105)
, ('Hidalgo', 60)
, ('Higashiosaka', 50)
, ('Hino', 50)
, ('Hiroshima', 50)
, ('Hodeida', 107)
, ('Hohhot', 23)
, ('Hoshiarpur', 44)
, ('Hsichuh', 92)
, ('Huaian', 23)
, ('Hubli-Dharwad', 44)
, ('Huejutla de Reyes', 60)
, ('Huixquilucan', 60)
, ('Hunuco', 74)
, ('Ibirit', 15)
, ('Idfu', 29)
, ('Ife', 69)
, ('Ikerre', 69)
, ('Iligan', 75)
, ('Ilorin', 69)
, ('Imus', 75)
, ('Inegl', 97)
, ('Ipoh', 59)
, ('Isesaki', 50)
, ('Ivanovo', 80)
, ('Iwaki', 50)
, ('Iwakuni', 50)
, ('Iwatsuki', 50)
, ('Izumisano', 50)
, ('Jaffna', 88)
, ('Jaipur', 44)
, ('Jakarta', 45)
, ('Jalib al-Shuyukh', 53)
, ('Jamalpur', 12)
, ('Jaroslavl', 80)
, ('Jastrzebie-Zdrj', 76)
, ('Jedda', 82)
, ('Jelets', 80)
, ('Jhansi', 44)
, ('Jinchang', 23)
, ('Jining', 23)
, ('Jinzhou', 23)
, ('Jodhpur', 44)
, ('Johannesburg', 85)
, ('Joliet', 103)
, ('Jos Azueta', 60)
, ('Juazeiro do Norte', 15)
, ('Juiz de Fora', 15)
, ('Junan', 23)
, ('Jurez', 60)
, ('Kabul', 1)
, ('Kaduna', 69)
, ('Kakamigahara', 50)
, ('Kaliningrad', 80)
, ('Kalisz', 76)
, ('Kamakura', 50)
, ('Kamarhati', 44)
, ('Kamjanets-Podilskyi', 100)
, ('Kamyin', 80)
, ('Kanazawa', 50)
, ('Kanchrapara', 44)
, ('Kansas City', 103)
, ('Karnal', 44)
, ('Katihar', 44)
, ('Kermanshah', 46)
, ('Kilis', 97)
, ('Kimberley', 85)
, ('Kimchon', 86)
, ('Kingstown', 81)
, ('Kirovo-Tepetsk', 80)
, ('Kisumu', 52)
, ('Kitwe', 109)
, ('Klerksdorp', 85)
, ('Kolpino', 80)
, ('Konotop', 100)
, ('Koriyama', 50)
, ('Korla', 23)
, ('Korolev', 80)
, ('Kowloon and New Kowloon', 42)
, ('Kragujevac', 108)
, ('Ktahya', 97)
, ('Kuching', 59)
, ('Kumbakonam', 44)
, ('Kurashiki', 50)
, ('Kurgan', 80)
, ('Kursk', 80)
, ('Kuwana', 50)
, ('La Paz', 60)
, ('La Plata', 6)
, ('La Romana', 27)
, ('Laiwu', 23)
, ('Lancaster', 103)
, ('Laohekou', 23)
, ('Lapu-Lapu', 75)
, ('Laredo', 103)
, ('Lausanne', 91)
, ('Le Mans', 34)
, ('Lengshuijiang', 23)
, ('Leshan', 23)
, ('Lethbridge', 20)
, ('Lhokseumawe', 45)
, ('Liaocheng', 23)
, ('Liepaja', 54)
, ('Lilongwe', 58)
, ('Lima', 74)
, ('Lincoln', 103)
, ('Linz', 9)
, ('Lipetsk', 80)
, ('Livorno', 49)
, ('Ljubertsy', 80)
, ('Loja', 28)
, ('London', 102)
, ('London', 20)
, ('Lublin', 76)
, ('Lubumbashi', 25)
, ('Lungtan', 92)
, ('Luzinia', 15)
, ('Madiun', 45)
, ('Mahajanga', 57)
, ('Maikop', 80)
, ('Malm', 90)
, ('Manchester', 103)
, ('Mandaluyong', 75)
, ('Mandi Bahauddin', 72)
, ('Mannheim', 38)
, ('Maracabo', 104)
, ('Mardan', 72)
, ('Maring', 15)
, ('Masqat', 71)
, ('Matamoros', 60)
, ('Matsue', 50)
, ('Meixian', 23)
, ('Memphis', 103)
, ('Merlo', 6)
, ('Mexicali', 60)
, ('Miraj', 44)
, ('Mit Ghamr', 29)
, ('Miyakonojo', 50)
, ('Mogiljov', 13)
, ('Molodetno', 13)
, ('Monclova', 60)
, ('Monywa', 64)
, ('Moscow', 80)
, ('Mosul', 47)
, ('Mukateve', 100)
, ('Munger (Monghyr)', 44)
, ('Mwanza', 93)
, ('Mwene-Ditu', 25)
, ('Myingyan', 64)
, ('Mysore', 44)
, ('Naala-Porto', 63)
, ('Nabereznyje Telny', 80)
, ('Nador', 62)
, ('Nagaon', 44)
, ('Nagareyama', 50)
, ('Najafabad', 46)
, ('Naju', 86)
, ('Nakhon Sawan', 94)
, ('Nam Dinh', 105)
, ('Namibe', 4)
, ('Nantou', 92)
, ('Nanyang', 23)
, ('NDjamna', 21)
, ('Newcastle', 85)
, ('Nezahualcyotl', 60)
, ('Nha Trang', 105)
, ('Niznekamsk', 80)
, ('Novi Sad', 108)
, ('Novoterkassk', 80)
, ('Nukualofa', 95)
, ('Nuuk', 40)
, ('Nyeri', 52)
, ('Ocumare del Tuy', 104)
, ('Ogbomosho', 69)
, ('Okara', 72)
, ('Okayama', 50)
, ('Okinawa', 50)
, ('Olomouc', 26)
, ('Omdurman', 89)
, ('Omiya', 50)
, ('Ondo', 69)
, ('Onomichi', 50)
, ('Oshawa', 20)
, ('Osmaniye', 97)
, ('ostka', 100)
, ('Otsu', 50)
, ('Oulu', 33)
, ('Ourense (Orense)', 87)
, ('Owo', 69)
, ('Oyo', 69)
, ('Ozamis', 75)
, ('Paarl', 85)
, ('Pachuca de Soto', 60)
, ('Pak Kret', 94)
, ('Palghat (Palakkad)', 44)
, ('Pangkal Pinang', 45)
, ('Papeete', 36)
, ('Parbhani', 44)
, ('Pathankot', 44)
, ('Patiala', 44)
, ('Patras', 39)
, ('Pavlodar', 51)
, ('Pemalang', 45)
, ('Peoria', 103)
, ('Pereira', 24)
, ('Phnom Penh', 18)
, ('Pingxiang', 23)
, ('Pjatigorsk', 80)
, ('Plock', 76)
, ('Po', 15)
, ('Ponce', 77)
, ('Pontianak', 45)
, ('Poos de Caldas', 15)
, ('Portoviejo', 28)
, ('Probolinggo', 45)
, ('Pudukkottai', 44)
, ('Pune', 44)
, ('Purnea (Purnia)', 44)
, ('Purwakarta', 45)
, ('Pyongyang', 70)
, ('Qalyub', 29)
, ('Qinhuangdao', 23)
, ('Qomsheh', 46)
, ('Quilmes', 6)
, ('Rae Bareli', 44)
, ('Rajkot', 44)
, ('Rampur', 44)
, ('Rancagua', 22)
, ('Ranchi', 44)
, ('Richmond Hill', 20)
, ('Rio Claro', 15)
, ('Rizhao', 23)
, ('Roanoke', 103)
, ('Robamba', 28)
, ('Rockford', 103)
, ('Ruse', 17)
, ('Rustenburg', 85)
, ('s-Hertogenbosch', 67)
, ('Saarbrcken', 38)
, ('Sagamihara', 50)
, ('Saint Louis', 103)
, ('Saint-Denis', 79)
, ('Sal', 62)
, ('Salala', 71)
, ('Salamanca', 60)
, ('Salinas', 103)
, ('Salzburg', 9)
, ('Sambhal', 44)
, ('San Bernardino', 103)
, ('San Felipe de Puerto Plata', 27)
, ('San Felipe del Progreso', 60)
, ('San Juan Bautista Tuxtepec', 60)
, ('San Lorenzo', 73)
, ('San Miguel de Tucumn', 6)
, ('Sanaa', 107)
, ('Santa Brbara dOeste', 15)
, ('Santa F', 6)
, ('Santa Rosa', 75)
, ('Santiago de Compostela', 87)
, ('Santiago de los Caballeros', 27)
, ('Santo Andr', 15)
, ('Sanya', 23)
, ('Sasebo', 50)
, ('Satna', 44)
, ('Sawhaj', 29)
, ('Serpuhov', 80)
, ('Shahr-e Kord', 46)
, ('Shanwei', 23)
, ('Shaoguan', 23)
, ('Sharja', 101)
, ('Shenzhen', 23)
, ('Shikarpur', 72)
, ('Shimoga', 44)
, ('Shimonoseki', 50)
, ('Shivapuri', 44)
, ('Shubra al-Khayma', 29)
, ('Siegen', 38)
, ('Siliguri (Shiliguri)', 44)
, ('Simferopol', 100)
, ('Sincelejo', 24)
, ('Sirjan', 46)
, ('Sivas', 97)
, ('Skikda', 2)
, ('Smolensk', 80)
, ('So Bernardo do Campo', 15)
, ('So Leopoldo', 15)
, ('Sogamoso', 24)
, ('Sokoto', 69)
, ('Songkhla', 94)
, ('Sorocaba', 15)
, ('Soshanguve', 85)
, ('Sousse', 96)
, ('South Hill', 5)
, ('Southampton', 102)
, ('Southend-on-Sea', 102)
, ('Southport', 102)
, ('Springs', 85)
, ('Stara Zagora', 17)
, ('Sterling Heights', 103)
, ('Stockport', 102)
, ('Sucre', 14)
, ('Suihua', 23)
, ('Sullana', 74)
, ('Sultanbeyli', 97)
, ('Sumqayit', 10)
, ('Sumy', 100)
, ('Sungai Petani', 59)
, ('Sunnyvale', 103)
, ('Surakarta', 45)
, ('Syktyvkar', 80)
, ('Syrakusa', 49)
, ('Szkesfehrvr', 43)
, ('Tabora', 93)
, ('Tabriz', 46)
, ('Tabuk', 82)
, ('Tafuna', 3)
, ('Taguig', 75)
, ('Taizz', 107)
, ('Talavera', 75)
, ('Tallahassee', 103)
, ('Tama', 50)
, ('Tambaram', 44)
, ('Tanauan', 75)
, ('Tandil', 6)
, ('Tangail', 12)
, ('Tanshui', 92)
, ('Tanza', 75)
, ('Tarlac', 75)
, ('Tarsus', 97)
, ('Tartu', 30)
, ('Teboksary', 80)
, ('Tegal', 45)
, ('Tel Aviv-Jaffa', 48)
, ('Tete', 63)
, ('Tianjin', 23)
, ('Tiefa', 23)
, ('Tieli', 23)
, ('Tokat', 97)
, ('Tonghae', 86)
, ('Tongliao', 23)
, ('Torren', 60)
, ('Touliu', 92)
, ('Toulon', 34)
, ('Toulouse', 34)
, ('Trshavn', 32)
, ('Tsaotun', 92)
, ('Tsuyama', 50)
, ('Tuguegarao', 75)
, ('Tychy', 76)
, ('Udaipur', 44)
, ('Udine', 49)
, ('Ueda', 50)
, ('Uijongbu', 86)
, ('Uluberia', 44)
, ('Urawa', 50)
, ('Uruapan', 60)
, ('Usak', 97)
, ('Usolje-Sibirskoje', 80)
, ('Uttarpara-Kotrung', 44)
, ('Vaduz', 55)
, ('Valencia', 104)
, ('Valle de la Pascua', 104)
, ('Valle de Santiago', 60)
, ('Valparai', 44)
, ('Vancouver', 20)
, ('Varanasi (Benares)', 44)
, ('Vicente Lpez', 6)
, ('Vijayawada', 44)
, ('Vila Velha', 15)
, ('Vilnius', 56)
, ('Vinh', 105)
, ('Vitria de Santo Anto', 15)
, ('Warren', 103)
, ('Weifang', 23)
, ('Witten', 38)
, ('Woodridge', 8)
, ('Wroclaw', 76)
, ('Xiangfan', 23)
, ('Xiangtan', 23)
, ('Xintai', 23)
, ('Xinxiang', 23)
, ('Yamuna Nagar', 44)
, ('Yangor', 65)
, ('Yantai', 23)
, ('Yaound', 19)
, ('Yerevan', 7)
, ('Yinchuan', 23)
, ('Yingkou', 23)
, ('York', 102)
, ('Yuncheng', 23)
, ('Yuzhou', 23)
, ('Zalantun', 23)
, ('Zanzibar', 93)
, ('Zaoyang', 23)
, ('Zapopan', 60)
, ('Zaria', 69)
, ('Zeleznogorsk', 80)
, ('Zhezqazghan', 51)
, ('Zhoushan', 23)
, ('Ziguinchor', 83)
GO
</pre>
<p>Then I wrote two queries to examine the data in both ways.</p>
<pre class="brush: sql; highlight: [7,16];">
-- FROM
SELECT
	*

FROM
	City AS ci INNER JOIN Country AS co
		ON ci.CountryID = co.CountryID

WHERE
	co.CountryID IN (44, 23, 103, 50, 60)
GO

-- WHERE
SELECT *
FROM City ci, Country co
WHERE ci.CountryID = co.CountryID
  AND co.CountryID IN (44, 23, 103, 50, 60)
GO
</pre>
<p>I asked an IT guy today &#8220;You write your queries in Oracle by using which manner?&#8221; and he answered me that he joins the tables in the WHERE clause. The execution plan told me there&#8217;s no difference in the execution.</p>
<p><a href="http://zlika.org/wp-content/uploads/2010/01/from_where.jpg" rel="lightbox[171]"><img title="FROM or WHERE clause?" src="http://zlika.org/wp-content/uploads/2010/01/from_where.jpg" alt="Full size" width="638" height="374" /></a></p>
<p>As a Microsoft fan, I prefer to link the tables using the FROM clause, because I may have no need of WHERE clause :-)</p>
<p>Félicitations</p>
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Author: zlika (Peter Lalovsky), Category: <a href="http://zlika.org/index.php/category/it/" title="View all posts in IT" rel="category tag">IT</a>, <a href="http://zlika.org/index.php/category/it/ms-sql-server/" title="View all posts in MS SQL Server" rel="category tag">MS SQL Server</a>, <a href="http://zlika.org/index.php/category/it/mysql/" title="View all posts in MySQL" rel="category tag">MySQL</a>, <a href="http://zlika.org/index.php/2010/01/21/linking-tables-in-sql-from-of-where-clause/#comments">%%comment_text%%</a>

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