{"id":1761,"date":"2021-05-25T17:38:04","date_gmt":"2021-05-25T16:38:04","guid":{"rendered":"https:\/\/ssntb.org\/mirozaric\/?p=1761"},"modified":"2021-05-25T17:38:04","modified_gmt":"2021-05-25T16:38:04","slug":"naredbe-sql-a","status":"publish","type":"post","link":"https:\/\/ssntb.org\/mirozaric\/2021\/05\/25\/naredbe-sql-a\/","title":{"rendered":"Naredbe SQL-a"},"content":{"rendered":"\n<p><strong>SELECT<\/strong> Vr\u0161i upit nad tabelama ili view-ovima u bazi. Da bi naredba bila ispravna mora minimalno sadr\u017eavati SELECT, nazive atributa, FROM te naziv tablice. SELECT naredbom prihva\u0107amo sadr\u017eaj jedne ili vi\u0161e tabela uz mogu\u0107nost dodavanja uslova, metoda spajanja, sortiranja rezultata i sl. <\/p>\n\n\n\n<p>Najjednostavniji oblik naredbe SELECT je:<\/p>\n\n\n\n<p><span class=\"has-inline-color has-vivid-red-color\">SELECT * FROM naziv_tabele <\/span><\/p>\n\n\n\n<p>Oznaka * u kodu ozna\u010dava da \u017eelimo prihvatiti sve kolone iz tra\u017eene tabele.<\/p>\n\n\n\n<p>\u2022Ako napravimo upit:<\/p>\n\n\n\n<p><span class=\"has-inline-color has-vivid-red-color\">SELECT * FROM tabela1, tabela2<\/span><\/p>\n\n\n\n<p>dobi\u0107emo Kartezijev proizvod te dvije tabele te \u0107e s obzirom na * biti izlistane sve kolone. Ako \u017eelimo ograni\u010diti broj kolona (atributa) koje \u017eelimo prikazati mo\u017eemo napraviti ovakav upit:<\/p>\n\n\n\n<p><span class=\"has-inline-color has-vivid-red-color\">SELECT tabela1.*, tabela2.atribut1, tabela2.atribut5 FROM tabela1, tabela2<\/span><\/p>\n\n\n\n<p>Kao rezultat \u0107emo dobiti sve atribute iz <em>tabele1<\/em> te <em>atribut1<\/em> i <em>atribut5<\/em> iz <em>tabele2<\/em>.<\/p>\n\n\n\n<p>Slu\u017ei\u0107mo se isklju\u010divo strogim imenovanjem atributa u selekciji&#8230; tj. uvijek \u0107emo navoditi <em>imetabele.imeatributa<\/em> nakon SELECT naredbe ukoliko \u0107e query biti kroz vi\u0161e tabela. Taj na\u010din pristupa nas osigurava od gre\u0161aka koje se vrlo lako mogu dogoditi zbog potencijalnih duplih naziva atributa u razli\u010ditim tabelama.<\/p>\n\n\n\n<p>SELECT naredbom prihva\u0107amo sadr\u017eaj jedne ili vi\u0161e tabela uz mogu\u0107nost dodavanja uslova, metoda spajanja, sortiranja rezultata i sl.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>SELECT Vr\u0161i upit nad tabelama ili view-ovima u bazi. Da bi naredba bila ispravna mora minimalno sadr\u017eavati SELECT, nazive atributa, FROM te naziv tablice. SELECT naredbom prihva\u0107amo sadr\u017eaj jedne ili vi\u0161e tabela uz mogu\u0107nost dodavanja uslova, metoda spajanja, sortiranja rezultata i sl. Najjednostavniji oblik naredbe SELECT je: SELECT * FROM naziv_tabele Oznaka * u kodu&hellip; <br \/> <a class=\"button small blue\" href=\"https:\/\/ssntb.org\/mirozaric\/2021\/05\/25\/naredbe-sql-a\/\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18],"tags":[],"class_list":["post-1761","post","type-post","status-publish","format-standard","hentry","category-18"],"_links":{"self":[{"href":"https:\/\/ssntb.org\/mirozaric\/wp-json\/wp\/v2\/posts\/1761","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ssntb.org\/mirozaric\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ssntb.org\/mirozaric\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ssntb.org\/mirozaric\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ssntb.org\/mirozaric\/wp-json\/wp\/v2\/comments?post=1761"}],"version-history":[{"count":1,"href":"https:\/\/ssntb.org\/mirozaric\/wp-json\/wp\/v2\/posts\/1761\/revisions"}],"predecessor-version":[{"id":1762,"href":"https:\/\/ssntb.org\/mirozaric\/wp-json\/wp\/v2\/posts\/1761\/revisions\/1762"}],"wp:attachment":[{"href":"https:\/\/ssntb.org\/mirozaric\/wp-json\/wp\/v2\/media?parent=1761"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ssntb.org\/mirozaric\/wp-json\/wp\/v2\/categories?post=1761"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ssntb.org\/mirozaric\/wp-json\/wp\/v2\/tags?post=1761"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}