{"id":45600,"date":"2022-07-25T11:33:04","date_gmt":"2022-07-25T10:33:04","guid":{"rendered":"https:\/\/codecool.com\/?p=45600"},"modified":"2022-09-14T16:44:56","modified_gmt":"2022-09-14T15:44:56","slug":"sql-incepatori","status":"publish","type":"post","link":"https:\/\/codecool.com\/ro\/sql-incepatori\/","title":{"rendered":"Ghidul \u00eencep\u0103torilor \u00een SQL: ce este \u0219i de ce s\u0103 \u00eenve\u021bi limbajul program\u0103rii bazelor de date"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">Dac\u0103 st\u0103p\u00e2ne\u0219ti <\/span><b>limbajul de programare SQL<\/b><span style=\"font-weight: 400;\"> \u0219i prin el, <\/span><b>bazele de date,<\/b><span style=\"font-weight: 400;\"> ai un viitor str\u0103lucit \u00een domeniul IT, dar nu numai. Acest limbaj standardizat este <\/span><b>eficient, u\u0219or de \u00eenv\u0103\u021bat \u0219i pus \u00een practic\u0103<\/b><span style=\"font-weight: 400;\">, iar experien\u021ba acumulat\u0103 \u00een cei peste 50 de ani de la conturarea SQL \u00eei asigur\u0103 locul \u00een <\/span><b>top 3 limbaje folosite \u0219i preferate de programatorii profesioni\u0219ti<\/b><span style=\"font-weight: 400;\">, dar \u0219i de pasiona\u021bii tech.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Este suficient s\u0103 te g\u00e2nde\u0219ti la seturile enorme de date pe care companiile din toate domeniile \u00ee\u0219i bazeaz\u0103 activitatea, ca s\u0103 \u00een\u021belegi de ce ai nevoie de <\/span><b>abilit\u0103\u021bi SQL \u00eentr-o carier\u0103 de programare<\/b><span style=\"font-weight: 400;\">. Iar ast\u0103zi discut\u0103m pe larg despre <\/span><b>tehnologia SQL<\/b><span style=\"font-weight: 400;\">, parte din programa cursului nostru de full-stack developer, care te duce de la prima linie de cod, la primul job, garantat tuturor absolven\u021bilor.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Parcurge articolul \u0219i<\/span><b> afl\u0103 tot ce ai nevoie s\u0103 \u0219tii despre programarea \u00een SQL<\/b><span style=\"font-weight: 400;\">, de ce te ajut\u0103 s\u0103 \u00eenve\u021bi acest limbaj standardizat la bazelor de date, <\/span><b>eficien\u021ba metodelor de studiu<\/b><span style=\"font-weight: 400;\"> pe cont propriu \u0219i \u00een cadrul unui<\/span><b> curs pentru \u00eencep\u0103tori<\/b><span style=\"font-weight: 400;\">, dar \u0219i<\/span><b> oportunit\u0103\u021bile de carier\u0103<\/b><span style=\"font-weight: 400;\"> \u0219i <\/span><b>salariile <\/b><span style=\"font-weight: 400;\">din domeniu.\u00a0<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Ce este SQL?<\/span><\/h2>\n<p><b>SQL<\/b><span style=\"font-weight: 400;\"> vine de la <\/span><i><span style=\"font-weight: 400;\">Structured Query Language<\/span><\/i><span style=\"font-weight: 400;\"> \u0219i este un limbaj de programare standardizat care este utilizat pentru a gestiona baze de date rela\u021bionale \u0219i pentru a efectua diverse opera\u021bii asupra datelor. Bazele de date pot stoca informa\u021bii despre persoane, produse, comenzi sau orice altceva.<\/span><\/p>\n<p><b>SQL este o bun\u0103 op\u021biune dac\u0103 este primul t\u0103u contact cu programarea<\/b><span style=\"font-weight: 400;\">, fiind un limbaj standardizat, dup\u0103 ce te familiarizezi cu no\u021biunile de baz\u0103, vei putea deja s\u0103 le aplici \u0219i s\u0103 gestionezi baze de date.\u00a0<\/span><\/p>\n<p><b>SQL ocup\u0103 locul 3 \u00een topul tehnologiilor utilizate \u00een industria IT<\/b><span style=\"font-weight: 400;\">, iar popularitatea ta deriv\u0103 natural din nevoia companiilor din \u00eentreaga lume de a gestiona seturile uria\u0219e de date care stau la baza opera\u021biunilor.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Bazele limbajului de programare SQL s-au pus \u00een anii 1970, fiind creat \u00een urma lucr\u0103rilor lui Edgar F. Codd, care lucra \u00een cadrul companiei IBM. Dar avea s\u0103 fie disponibil publicului larg c\u00e2\u021biva ani mai t\u00e2rziu, \u00een 1986 IBM a dezvoltat primul prototip de baz\u0103 de date rela\u021bional\u0103 \u0219i standardizat de ANSI. \u00cen acela\u0219i an, compania Relational Software, ast\u0103zi Oracle, a lansat prima baz\u0103 de date rela\u021bional\u0103.\u00a0<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">De ce este limbajul SQL at\u00e2t de popular?<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">La peste 5 decenii de la dezvoltarea sa, <\/span><b>SQL \u0219i-a dovedit eficien\u021ba <\/b><span style=\"font-weight: 400;\">\u0219i \u0219i-a c\u00e2\u0219tigat, pe bun\u0103 dreptate, locul de frunte \u00een r\u00e2ndul tehnologiilor folosite zilnic de profesioni\u0219tii tech.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u00cen plus, tot la SQL apeleaz\u0103 \u0219i profesioni\u0219ti din alte domenii &#8211; jurnali\u0219ti, oameni de \u0219tiin\u021b\u0103 etc. care lucreaz\u0103 cu seturi \u00eensemnate de date, la care SQL exceleaz\u0103.\u00a0<\/span><b><\/b><\/p>\n<ul>\n<li aria-level=\"1\"><b>SQL proceseaz\u0103 rapid interog\u0103rile<\/b><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Indiferent c\u00e2t de voluminoase ar fi datele, SQL le poate prelua rapid \u0219i eficient. De asemenea, poate realiza procese ca inserarea, \u0219tergerea \u0219i mutarea datelor relativ rapid. Procesarea rapid\u0103 a interog\u0103rilor economise\u0219te timp, asigur\u00e2nd \u00een acela\u0219i timp acurate\u021bea, astfel \u00eenc\u00e2t s\u0103 nu ajungi s\u0103 a\u0219tep\u021bi cu orele datele de care ai nevoie.\u00a0\u00a0<\/span><b><\/b><\/p>\n<ul>\n<li aria-level=\"1\"><b>SQL este standardizat, u\u0219or de \u00eenv\u0103\u021bat<\/b><\/li>\n<\/ul>\n<p><b>SQL <\/b><span style=\"font-weight: 400;\">folose\u0219te un limbaj standardizat, ceea ce \u00eel face foarte accesibil pentru to\u021bi utilizatorii. Ofer\u0103 o platform\u0103 uniform\u0103 \u0219i folose\u0219te, \u00een principal, cuvinte \u0219i declara\u021bii \u00een limba englez\u0103, astfel \u00eenc\u00e2t este u\u0219or de \u00eenv\u0103\u021bat \u0219i de scris, chiar \u0219i pentru cei f\u0103r\u0103 experien\u021b\u0103 tech, cum sunt jurnali\u0219tii, oamenii de \u0219tiin\u021b\u0103, anali\u0219tii de afaceri, etc.\u00a0<\/span><\/p>\n<ul>\n<li aria-level=\"1\"><b>SQL ofer\u0103 mai multe vizualiz\u0103ri de date<\/b><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">C\u00e2nd utilizezi SQL, po\u021bi crea mai multe tipuri de vizualiz\u0103ri, oferind utilizatorilor diferite expuneri ale structurii \u0219i con\u021binutului bazei de date. O caracteristic\u0103 valoroas\u0103 dac\u0103 trebuie s\u0103 partajezi informa\u021biile cu alte departamente din cadrul companiei.<\/span><b><\/b><\/p>\n<ul>\n<li aria-level=\"1\"><b>SQL este portabil<\/b><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">\u00cel po\u021bi folosi pe computer, laptop \u0219i unele dispozitive mobile \u0219i servere. Func\u021bioneaz\u0103 pe sisteme locale de internet \u0219i intranet. Portabilitatea sa \u00eel face o op\u021biune convenabil\u0103 pentru utilizatori, deoarece ace\u0219tia \u00eel pot transfera de pe un dispozitiv pe altul f\u0103r\u0103 probleme, o calitate de apreciat \u00een contextul muncii remote \u0219i hibrid, preferat\u0103 \u00eenc\u0103 \u00een industria tech.\u00a0<\/span><b><\/b><\/p>\n<ul>\n<li aria-level=\"1\"><b>SQL are cod surs\u0103 deschis<\/b><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Exist\u0103 c\u00e2teva sisteme de gestionare a bazelor de date SQL open-source, cum sunt MySQL, PostgreSQL, pe care companiile le pot accesa gratuit. \u0218i o fac \u00een num\u0103r mare, popularitatea acestora ajung\u00e2nd chiar s\u0103 o dep\u0103\u0219easc\u0103 pe cea a limbajului de baz\u0103, datorit\u0103 func\u021bionalit\u0103\u021bilor extra pe care le ofer\u0103.\u00a0<\/span><\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter wp-image-45614 size-large\" src=\"http:\/\/codecool.com\/wp-content\/uploads\/2022\/07\/foto-codecool-3-1024x826.jpeg\" alt=\"limbaj programare SQL\" width=\"800\" height=\"645\" srcset=\"https:\/\/codecool.com\/wp-content\/uploads\/2022\/07\/foto-codecool-3-1024x826.jpeg 1024w, https:\/\/codecool.com\/wp-content\/uploads\/2022\/07\/foto-codecool-3-300x242.jpeg 300w, https:\/\/codecool.com\/wp-content\/uploads\/2022\/07\/foto-codecool-3-768x620.jpeg 768w, https:\/\/codecool.com\/wp-content\/uploads\/2022\/07\/foto-codecool-3-1536x1239.jpeg 1536w, https:\/\/codecool.com\/wp-content\/uploads\/2022\/07\/foto-codecool-3-2048x1652.jpeg 2048w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<h2><span style=\"font-weight: 400;\">La ce folose\u0219ti programarea SQL?<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Acest limbaj de programare are diverse utiliz\u0103ri pentru anali\u0219tii de date \u0219i profesioni\u0219tii \u00een \u0219tiin\u021ba datelor. Este deosebit de util deoarece \u00ee\u021bi permite s\u0103 controlezi baza de date prin diverse opera\u021biuni:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Interog\u0103ri \u00eentr-o baz\u0103 de date<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Preluarea datelor dintr-o baz\u0103<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Inserarea de noi \u00eenregistr\u0103ri<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Actualizarea \u00eenregistr\u0103rilor existente<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u0218tergerea \u00eenregistr\u0103rile dintr-o baz\u0103 de date<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Crearea de noi baze de date sau sau tabele<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Crearea de proceduri \u0219i vizualiz\u0103ri stocate \u00eentr-o baz\u0103 de date<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Setarea permisiuni pentru tabele, proceduri \u0219i vizualiz\u0103ri<\/span><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">\u00ce\u021bi imaginezi c\u00e2t de dificil\u0103 ar fi via\u021ba oric\u0103rui profesionist dac\u0103 nu ar avea o modalitate de a controla o baz\u0103 de date cu sute, mii, milioane de \u00eenregistr\u0103ri, \u00een acest format, cu ajutorul SQL?\u00a0<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">De ce s\u0103 \u00eenve\u021bi limbajul SQL?<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Dac\u0103 \u00eenve\u021bi doar un singur limbaj de interogare a datelor, este bine ca acela s\u0103 fie SQL, ai toate \u0219ansele s\u0103-l \u00eent\u00e2lne\u0219ti profes\u00e2nd \u00een IT \u0219i te po\u021bi baza pe el pentru a rezolva eficient orice task legat de baze de date.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Un programator care vrea s\u0103 profite din plin de oportunit\u0103\u021bile de carier\u0103, are desigur<\/span><b> abilit\u0103\u021bi SQL \u0219i st\u0103p\u00e2ne\u0219te \u0219i alte limbaje care sunt nelipsite din cerin\u021bele angajatorilor<\/b><span style=\"font-weight: 400;\">, cum sunt Java, C#, HTML, CSS \u0219i altele, incluse \u00een lista de tehnologii pe care le \u00eenve\u021bi la cursul nostru cu job garantat.\u00a0\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u00ce\u021bi d\u0103m<\/span><b> 5 motive solide pentru a include tehnologia SQL<\/b><span style=\"font-weight: 400;\"> \u00een preg\u0103tirea pentru un job de programator:\u00a0<\/span><\/p>\n<ol>\n<li><b> <\/b> <b>Este standardul industriei<\/b><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">Limbajul SQL, \u0219i cele derivate din acesta ca PostgreSQL, MySQL, reprezint\u0103 standardul industriei IT. Dar \u0219i companiile din alte domenii se bazeaz\u0103 pe tehnologia SQL, pentru a elimina nevoia de instruire costisitoare \u00een limbaje de codare de ni\u0219\u0103.<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/p>\n<ol start=\"2\">\n<li><b> <\/b> <b>Este matur din punct de vedere semantic<\/b><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">SQL exist\u0103 de aproape cinci decenii, dar nu se poate spune c\u0103 asta \u00eel face de \u201ede mod\u0103 veche\u201d. Din contra, a avut cu adev\u0103rat \u0219ansa de a se maturiza de-a lungul anilor \u0219i poate face fa\u021b\u0103 oric\u0103rei opera\u021biuni pe care dore\u0219ti s\u0103 o \u00eendeplineasc\u0103.\u00a0\u00a0<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><\/p>\n<ol start=\"3\">\n<li><b> <\/b> <b>Este un limbaj u\u0219or de \u00eenv\u0103\u021bat \u0219i intuitiv<\/b><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">SQL este un limbaj u\u0219or \u0219i intuitiv, ceea ce \u00eel face atractiv pentru cei ce \u00eenva\u021b\u0103 programarea de la zero. Desigur, exist\u0103 o mul\u021bime de opera\u021biuni avansate de studiat, dar curba de \u00eenv\u0103\u021bare pentru elementele de baz\u0103 nu este foarte abrupt\u0103. Deoarece SQL nu \u00eencearc\u0103 s\u0103 complice prea mult lucrurile, este \u0219i extrem de eficient.<\/span><\/p>\n<ol start=\"4\">\n<li><b> Abilit\u0103\u021bile SQL sunt c\u0103utate \u00een toate domeniile<\/b><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">Majoritatea organiza\u021biilor folosesc date, fie c\u0103 este vorba de informa\u021bii financiare, despre pia\u021b\u0103, segmentarea clien\u021bilor sau \u00eenregistr\u0103rile acestora. Acolo unde exist\u0103 date, este de obicei nevoie de SQL, iar cei care au abilitatea de a-l utiliza vor putea profita din plin de oportunit\u0103\u021bile de carier\u0103 din domeniul bazelor de date.\u00a0<\/span><\/p>\n<ol start=\"5\">\n<li><b> Nu s-a inventat un limbaj de baz\u0103 de date mai bun<\/b><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">Totul se reduce la asta! Unii au \u00eencercat s\u0103 detroneze limbajul, dar SQL r\u0103m\u00e2ne popular \u0219i solicitat pentru un motiv, func\u021bioneaz\u0103 a\u0219a cum trebuie!<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Sondajele arat\u0103 c\u0103 <strong>tehnologiile SQL<\/strong> stau toate \u00een fruntea topurile, deasupra oric\u0103rui alt tip de sistem de gestionare a bazelor de date, limbajul fiind folosit at\u00e2t de dezvoltatori profesioni\u0219ti, c\u00e2t \u0219i de utilizatori care fac asta ca hobby, sau din necesitate la job.\u00a0<\/span><\/p>\n<p><img decoding=\"async\" class=\"aligncenter wp-image-45609 size-large\" src=\"http:\/\/codecool.com\/wp-content\/uploads\/2022\/07\/foto-codecool-1-1024x721.jpeg\" alt=\"curs incepatori SQL\" width=\"800\" height=\"563\" srcset=\"https:\/\/codecool.com\/wp-content\/uploads\/2022\/07\/foto-codecool-1-1024x721.jpeg 1024w, https:\/\/codecool.com\/wp-content\/uploads\/2022\/07\/foto-codecool-1-300x211.jpeg 300w, https:\/\/codecool.com\/wp-content\/uploads\/2022\/07\/foto-codecool-1-768x541.jpeg 768w, https:\/\/codecool.com\/wp-content\/uploads\/2022\/07\/foto-codecool-1-1536x1081.jpeg 1536w, https:\/\/codecool.com\/wp-content\/uploads\/2022\/07\/foto-codecool-1-2048x1442.jpeg 2048w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<h2><span style=\"font-weight: 400;\">De unde \u00eencepi atunci c\u00e2nd vrei s\u0103 \u00eenve\u021bi programare SQL?<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Dac\u0103 te-ai convins de<\/span><b> avantajele pe care le aduce SQL \u00een CV-ul unui programator<\/b><span style=\"font-weight: 400;\">, este momentul s\u0103 alegi <\/span><b>metoda de studiu cea mai potrivit\u0103 pentru tine<\/b><span style=\"font-weight: 400;\"> &#8211; s\u0103 studiezi pe cont propriu, cu o carte SQL \u00een m\u00e2n\u0103? Sau s\u0103 alegi un curs pentru \u00eencep\u0103tori, unde ai parte de \u00eendrumare?<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Iat\u0103 ce este bine s\u0103 \u0219tii despre fiecare dintre aceste op\u021biuni:\u00a0<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Studiaz\u0103 pe cont propriu: c\u0103r\u021bi \u0219i tutoriale de programare SQL<\/span><\/h3>\n<p><b>\u00cen favoarea studiului pe cont propriu<\/b><span style=\"font-weight: 400;\">, se poate spune c\u0103 multe persoane au \u00eenv\u0103\u021bat SQL din c\u0103r\u021bi \u00een cei peste 50 de ani de existen\u021b\u0103, metoda clasic\u0103 ar putea func\u021biona \u0219i \u00een cazul t\u0103u, de ce nu? \u00cen plus, acum ai la un click distan\u021b\u0103 o mul\u021bime de resurse online, cum sunt tutorialele, un format accesibil pentru cei ce studiaz\u0103 pe cont propriu.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Afirma\u021biile sunt valabile, mai ales dac\u0103 este primul t\u0103u contact cu programarea, studiul individual este util pentru a te familiariza cu no\u021biunile de baz\u0103. Iar ca metoda s\u0103 aduc\u0103 cu adev\u0103rat rezultate este nevoie de implicare din partea ta, cel mai indicat este s\u0103-\u021bi faci un <\/span><b>program zilnic de studiu \u0219i s\u0103-l urmezi cu stricte\u021be<\/b><span style=\"font-weight: 400;\">, altfel procesul se va \u00eentinde pe o perioad\u0103 prea lung\u0103 de timp.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Iat\u0103 doar c\u00e2teva <\/span><b>c\u0103r\u021bi SQL de referin\u021b\u0103<\/b><span style=\"font-weight: 400;\">, care au primit cele mai bune recenzii din partea utilizatorilor:\u00a0<\/span><b><\/b><\/p>\n<ul>\n<li aria-level=\"1\"><b>SQL QuickStart Guide: The Simplified Beginner\u2019s Guide to Managing, Analyzing, and Manipulating Data with SQL<\/b><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">\u00cen acest ghid simplificat, dar cuprinz\u0103tor, scris de mentorul cu experien\u021b\u0103 \u0219i expert SQL, Walter Shields, g\u0103se\u0219ti no\u021biunile de baz\u0103 de care are nevoie un \u00eencep\u0103tor pentru a gestiona, analiza \u0219i manipula bazele de date. Subiectul este prezentat \u00eentr-un mod accesibil, u\u0219or de \u00een\u021beles \u0219i de pus \u00een practic\u0103.<\/span><b><\/b><\/p>\n<ul>\n<li aria-level=\"1\"><b>SQL Cookbook: Query Solutions and Techniques for Database Developers<\/b><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">O carte scris\u0103 \u00een stilul popular O\u2019Reilly, care propune o discu\u021bie tip problem\u0103-solu\u021bie, de care dezvoltatorii de baze de date au nevoie. Este o resurs\u0103 util\u0103, care te va ajuta s\u0103 g\u0103se\u0219ti solu\u021bii la problemele pe care orice \u00eencep\u0103tor le \u00eent\u00e2mpin\u0103 c\u00e2nd \u00eencepe s\u0103 lucreze cu func\u021bii SQL de fereastr\u0103, pivotare, parcurgerea unui \u0219ir \u0219i altele.<\/span><b><\/b><\/p>\n<ul>\n<li aria-level=\"1\"><b>Head First SQL: Your brain on SQL<\/b><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Ghidul, ce o are ca autoare pe Lynn Beighley, se prezint\u0103 \u00eentr-un format vizual bogat conceput pentru a te \u00eenv\u0103\u021ba \u00eentr-un mod pe care \u00eel po\u021bi \u00een\u021belege cu u\u0219urin\u021b\u0103. Vei parcurge o c\u0103l\u0103torie prin limbaj, de la instruc\u021biuni de baz\u0103 INSERT \u0219i interog\u0103ri SELECT p\u00e2n\u0103 la manipularea complex\u0103 a bazei de date cu indici, tranzac\u021bii.<\/span><\/p>\n<p><img decoding=\"async\" class=\"aligncenter wp-image-45621 size-large\" src=\"http:\/\/codecool.com\/wp-content\/uploads\/2022\/07\/programare-SQL-1024x512.jpeg\" alt=\"curs sql incepatori\" width=\"800\" height=\"400\" srcset=\"https:\/\/codecool.com\/wp-content\/uploads\/2022\/07\/programare-SQL-1024x512.jpeg 1024w, https:\/\/codecool.com\/wp-content\/uploads\/2022\/07\/programare-SQL-300x150.jpeg 300w, https:\/\/codecool.com\/wp-content\/uploads\/2022\/07\/programare-SQL-768x384.jpeg 768w, https:\/\/codecool.com\/wp-content\/uploads\/2022\/07\/programare-SQL-1536x768.jpeg 1536w, https:\/\/codecool.com\/wp-content\/uploads\/2022\/07\/programare-SQL-2048x1024.jpeg 2048w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<p><b>Dac\u0103 preferi resursele online,<\/b><span style=\"font-weight: 400;\"> atunci ai desigur op\u021biunea de <\/span><b>tutorial SQL<\/b><span style=\"font-weight: 400;\">, un format mai interactiv, care te poate ajuta la fel de bine \u00een faza de ini\u021biere. Ai la dispozi\u021bie o list\u0103 numeroas\u0103 de tutoriale SQL gratuite \u0219i toate \u0219ansele s\u0103 g\u0103se\u0219ti c\u00e2teva care se potrivesc cu stilul t\u0103u de \u00eenv\u0103\u021bare.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">De\u0219i este o op\u021biune care vine cu <\/span><b>avantaje precum \u00eenv\u0103\u021barea \u00een ritm propriu, program personalizat de tine pentru tine, costuri sc\u0103zute<\/b><span style=\"font-weight: 400;\">, de cele mai multe ori, cei care aleg s\u0103 studieze pe cont propriu \u0219i ajung s\u0103 st\u0103p\u00e2neasc\u0103 func\u021biile de baz\u0103, <\/span><b>se confrunt\u0103 cu diverse probleme <\/b><span style=\"font-weight: 400;\">pe m\u0103sur\u0103 ce avanseaz\u0103 \u0219i aloc\u0103 timp pre\u021bios pentru a g\u0103si solu\u021bii, sau chiar se blocheaz\u0103 \u00eentr-o etap\u0103 anume.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Acestea fac parte din <\/span><b>dezavantajele studiului pe cont propriu<\/b><span style=\"font-weight: 400;\">, ajungi uneori s\u0103 <\/span><b>nu folose\u0219ti eficient timpul, <\/b><span style=\"font-weight: 400;\">sau r\u0103m\u00e2i cu<\/span><b> goluri \u00een formare<\/b><span style=\"font-weight: 400;\">. Din fericire, ai la \u00eendem\u00e2n\u0103 \u0219i urm\u0103toarea op\u021biune.\u00a0<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Studiaz\u0103 la un curs de programare SQL<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">O metod\u0103 eficient\u0103, care \u00ee\u021bi asigur\u0103 acces la o <\/span><b>formare ghidat\u0103 de un specialist \u0219i adaptat\u0103 la realit\u0103\u021bile \u0219i cerin\u021bele din domeniul IT<\/b><span style=\"font-weight: 400;\">, este s\u0103 urmezi un <\/span><b>curs SQL<\/b><span style=\"font-weight: 400;\">, \u00een care s\u0103 \u00eenve\u021bi acest limbaj de programare, ideal \u0219i altele, la fel de c\u0103utate pe pia\u021ba muncii.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Dac\u0103 \u00eencepi programarea de la zero, sau ai c\u00e2teva cuno\u0219tin\u021be basic din studiu individual, <\/span><b>cursurile de programare al\u0103turi de un mentor cu experien\u021b\u0103<\/b><span style=\"font-weight: 400;\"> te vor ajuta s\u0103 \u00eenve\u021bi structurat, s\u0103 progresezi, s\u0103 identifici \u0219i s\u0103 corectezi lipsuri, pentru a putea atinge performan\u021be la viitorul job.\u00a0<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-43724 size-large\" src=\"http:\/\/codecool.com\/wp-content\/uploads\/2022\/07\/programa-CC-2022-1024x573.png\" alt=\"programa curs programare\" width=\"800\" height=\"448\" srcset=\"https:\/\/codecool.com\/wp-content\/uploads\/2022\/07\/programa-CC-2022-1024x573.png 1024w, https:\/\/codecool.com\/wp-content\/uploads\/2022\/07\/programa-CC-2022-300x168.png 300w, https:\/\/codecool.com\/wp-content\/uploads\/2022\/07\/programa-CC-2022-768x430.png 768w, https:\/\/codecool.com\/wp-content\/uploads\/2022\/07\/programa-CC-2022-1536x860.png 1536w, https:\/\/codecool.com\/wp-content\/uploads\/2022\/07\/programa-CC-2022.png 1882w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">La \u0219coala de programare <\/span><b>Codecool ne asum\u0103m calitatea educa\u021biei oferite<\/b><span style=\"font-weight: 400;\">, <\/span><b>garant\u00e2nd job absolven\u021bilor cursului de full-stack developer. \u00cenve\u021bi <\/b><span style=\"font-weight: 400;\">PostgreSQL, C#, Java \u0219i Javascript, HTML, CSS, React \u0219i multe alte tehnologii de top din industrie, iar garan\u021bia job-ului se p\u0103streaz\u0103 fie c\u0103 alegi cursul \u00een variant\u0103 offline sau online.<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/codecool.com\/ro\/cursuri\/curs-full-stack-developer\/\"><span style=\"font-weight: 400;\">Full-stack developer offline<\/span><\/a><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Durata cursului este de 10 luni de formare intensiv\u0103, studiezi la campusului din Bucure\u0219ti al\u0103turi de un mentor dedicat \u0219i colegi motiva\u021bi, ai parte de internship pl\u0103tit \u0219i de job garantat \u00eentr-o companie partener\u0103.\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/codecool.com\/ro\/cursuri\/full-stack-developer-online\/\"><span style=\"font-weight: 400;\">Full-stack developer online<\/span><\/a><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Curs online intensiv adresat celor din afara Bucure\u0219tiului, ce propune acela\u0219i program de formare de 10 luni, internship pl\u0103tit \u0219i un job de programator junior la final.\u00a0<\/span><\/p>\n<p><a href=\"https:\/\/codecool.com\/wp-content\/uploads\/2022\/09\/Ghid-curs-Full-Stack-2022.pdf\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-22055 size-large\" src=\"https:\/\/codecool.com\/wp-content\/uploads\/2021\/07\/ghid-codecool-1024x536.jpg\" alt=\"Ghidul studentului Codecool\" width=\"800\" height=\"419\" srcset=\"https:\/\/codecool.com\/wp-content\/uploads\/2021\/07\/ghid-codecool-1024x536.jpg 1024w, https:\/\/codecool.com\/wp-content\/uploads\/2021\/07\/ghid-codecool-300x157.jpg 300w, https:\/\/codecool.com\/wp-content\/uploads\/2021\/07\/ghid-codecool-768x402.jpg 768w, https:\/\/codecool.com\/wp-content\/uploads\/2021\/07\/ghid-codecool.jpg 1200w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/a><\/p>\n<h2><span style=\"font-weight: 400;\">\u00cen c\u00e2t timp po\u021bi \u00eenv\u0103\u021ba limbajul SQL, ca \u00eencep\u0103tor?<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Dac\u0103 dai crezare unor anumite surse care apar asociate cu aceast\u0103 \u00eentrebare, ajungi s\u0103 te vezi programator SQL \u00een trei zile, urm\u00e2nd desigur un program miraculos pentru a\u0219a rezultate.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u00cen realitate, de\u0219i SQL este un limbaj standardizat iar asta \u00eel face mai u\u0219or de \u00eenv\u0103\u021bat, timpul necesar depinde de ritmul fiec\u0103rui student \u0219i nu se rezum\u0103 la c\u00e2teva zile. Astfel, \u00een medie, un cursant are nevoie de aproximativ<\/span><b> dou\u0103 p\u00e2n\u0103 la trei s\u0103pt\u0103m\u00e2ni s\u0103 \u00eenve\u021be conceptele de baz\u0103 ale SQL<\/b><span style=\"font-weight: 400;\">. Dar pentru a \u00eencepe s\u0103 le <\/span><b>utilizezi eficient \u00een scenarii din lumea profesional\u0103, <\/b><span style=\"font-weight: 400;\">vei avea nevoie de <\/span><b>luni bune de studiu \u0219i practic\u0103<\/b><span style=\"font-weight: 400;\">.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Din experien\u021ba Codecool, putem spune c\u0103 <\/span><b>studen\u021bii ajung s\u0103 st\u0103p\u00e2neasc\u0103 SQL dup\u0103 2 luni de studiu intensiv<\/b><span style=\"font-weight: 400;\">, dar procesul de formare nu se opre\u0219te dup\u0103 acest timp. La cursul nostru de full-stack developer complet\u0103m abilit\u0103\u021bile SQL cu alte limbaje \u0219i tehnologii \u0219i te echip\u0103m \u00een cele <\/span><b>10 luni de curs cu un set complet de competen\u021be tech dar \u0219i soft skills cheie<\/b><span style=\"font-weight: 400;\">, o formare complet\u0103 care \u00ee\u021bi va aduce \u0219i primul job \u00een IT.\u00a0<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-45603 size-large\" src=\"http:\/\/codecool.com\/wp-content\/uploads\/2022\/07\/foto-codecool-2-1024x684.jpeg\" alt=\"programare sql\" width=\"800\" height=\"534\" srcset=\"https:\/\/codecool.com\/wp-content\/uploads\/2022\/07\/foto-codecool-2-1024x684.jpeg 1024w, https:\/\/codecool.com\/wp-content\/uploads\/2022\/07\/foto-codecool-2-300x200.jpeg 300w, https:\/\/codecool.com\/wp-content\/uploads\/2022\/07\/foto-codecool-2-768x513.jpeg 768w, https:\/\/codecool.com\/wp-content\/uploads\/2022\/07\/foto-codecool-2-1536x1025.jpeg 1536w, https:\/\/codecool.com\/wp-content\/uploads\/2022\/07\/foto-codecool-2-2048x1367.jpeg 2048w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<h2><span style=\"font-weight: 400;\">Ce salarii au programatorii SQL?<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Dac\u0103 alegi programarea, este sigur faptul c\u0103 p\u0103\u0219e\u0219ti \u00eentr-un domeniu care se afl\u0103 \u00een fruntea clasamentelor c\u00e2nd vine vorba de veniturile salariale. Am ajuns a\u0219adar la subiectul salariilor, unde l\u0103s\u0103m cifrele s\u0103 vorbeasc\u0103.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u00cen Rom\u00e2nia, salariul <\/span><b>mediu din IT a ajuns la 9746 lei \u00een luna aprilie 2022, <\/b><span style=\"font-weight: 400;\">o valoare care dep\u0103\u0219e\u0219te cu mult <\/span><b>salariul mediu pe economie<\/b><span style=\"font-weight: 400;\">, care este de doar <\/span><b>3967 lei<\/b><span style=\"font-weight: 400;\">, c<\/span><span style=\"font-weight: 400;\">onform <\/span><a href=\"http:\/\/statistici.insse.ro:8077\/tempo-online\/#\/pages\/tables\/insse-table\"><span style=\"font-weight: 400;\">datelor recente ale Institutului Na\u021bional de Statistic\u0103<\/span><\/a><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Iar \u00een cazul unui programator specializat \u00een SQL, acesta poate s\u0103 \u00eencaseze venituri lunare foarte bune, chiar din etapa de junior, neav\u00e2nd experien\u021b\u0103 anterioar\u0103:\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>La nivel na\u021bional, <\/b><span style=\"font-weight: 400;\">salariul mediu net pentru un <\/span><b>programator SQL este de 7821 de lei <\/b><span style=\"font-weight: 400;\">, conform datelor furnizate de platforma <\/span><a href=\"https:\/\/www.paylab.ro\/informatii-calculator-salarii\/tehnologia-informatiei\/programator-csharp?search=1\"><span style=\"font-weight: 400;\">Paylab<\/span><\/a><span style=\"font-weight: 400;\">.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>\u00cen Bucure\u0219ti<\/b><span style=\"font-weight: 400;\">, un programator SQL, f\u0103r\u0103 studii superioare \u0219i experien\u021b\u0103 profesional\u0103, are un salariu mediu estimat la<\/span><b> 7728 lei.<\/b><span style=\"font-weight: 400;\">\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>\u00cen Cluj,<\/b><span style=\"font-weight: 400;\"> un programator de baze de date, f\u0103r\u0103 studii superioare \u0219i experien\u021b\u0103, are un venit de <\/span><b>8287 lei.<\/b><span style=\"font-weight: 400;\">\u00a0<\/span><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">\u0218i alte tehnologii \u0219i specializ\u0103ri se fac remarcate &#8211; programatorii C, Java, .NET, <\/span><a href=\"https:\/\/codecool.com\/ro\/cursuri\/curs-testare-manuala\/\"><span style=\"font-weight: 400;\">testerii QA<\/span><\/a><span style=\"font-weight: 400;\"> \u0219i dezvoltatorii full-stack intr\u00e2nd \u00een <\/span><a href=\"https:\/\/codecool.com\/ro\/blog\/top-salarii-it\/\"><span style=\"font-weight: 400;\">topul salariilor din IT<\/span><\/a><span style=\"font-weight: 400;\">\u00a0<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Care sunt job-urile de programator la care ai acces dac\u0103 \u00eenve\u021bi SQL?<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Iat\u0103 ce job-uri din domeniul IT po\u021bi accesa cu abilit\u0103\u021bile tale SQL:\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Data analyst<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Database developer<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Database architect<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Database administrator<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Big data engineer<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Business Analyst<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Data scientist<\/span><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">\u0218i alte profesii care lucreaz\u0103 cu volume considerabile de informa\u021bii pot beneficia de eficien\u021ba SQL c\u00e2nd vine vorba de bazele de date, cum sunt:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Oamenii de \u0219tiin\u021b\u0103 \u0219i cercet\u0103torii<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Anali\u0219tii de business intelligence<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Jurnali\u0219tii<\/span><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">De exemplu, jurnali\u0219tii care au raportat \u00een SUA despre fraudele fiscale offshore \u0219i despre sp\u0103larea banilor au trebuit s\u0103 \u00eenve\u021be SQL pentru a parcurge \u0219i \u00een\u021belege informa\u021biile cuprinse \u00een milioanele de e-mailuri \u0219i fi\u0219iere care au fost scurse \u0219i au stat la baza investiga\u021biei jurnalistice.\u00a0<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">Afl\u0103 cum po\u021bi deveni programator SQL al\u0103turi de Codecool<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">A venit momentul s\u0103 tragem concluzia: <\/span><b>abilit\u0103\u021bile SQL care \u00ee\u021bi dau putere asupra bazelor de date nu trebuie s\u0103 lipseasc\u0103 din preg\u0103tirea ta ca programator<\/b><span style=\"font-weight: 400;\">! Dar pentru a te pozi\u021biona printre <\/span><b>candida\u021bii de top<\/b><span style=\"font-weight: 400;\">, pe care companiile abia a\u0219teapt\u0103 s\u0103 \u00eei recruteze \u00een echipele lor, este nevoie s\u0103 st\u0103p\u00e2ne\u0219ti \u0219i alte limbaje \u0219i tehnologii folosite \u00een industria IT.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Cea mai bun\u0103 decizie pe care o po\u021bi lua pentru viitorul t\u0103u este s\u0103-\u021bi <\/span><b>completezi CV-ul cu un set solid de abilit\u0103\u021bi tech<\/b><span style=\"font-weight: 400;\">, pe care le-am inclus \u00een programa cursului nostru de programare full-stack, care \u00ee\u021bi aduce \u0219i jobul dorit.\u00a0<\/span><\/p>\n<h3 style=\"text-align: center;\"><a href=\"https:\/\/codecool.com\/ro\/cursuri\/\"><span style=\"font-weight: 400;\">Alege cursul potrivit pentru tine \u0219i \u00eencepe s\u0103-\u021bi construie\u0219ti viitorul \u00een IT al\u0103turi de Codecool!\u00a0<\/span><\/a><\/h3>\n","protected":false},"excerpt":{"rendered":"<p>Dac\u0103 st\u0103p\u00e2ne\u0219ti limbajul de programare SQL \u0219i prin el, bazele de date, ai un viitor str\u0103lucit \u00een domeniul IT, dar nu numai. Acest limbaj standardizat este eficient, u\u0219or de \u00eenv\u0103\u021bat \u0219i pus \u00een practic\u0103, iar experien\u021ba acumulat\u0103 \u00een cei peste 50 de ani de la conturarea SQL \u00eei asigur\u0103 locul \u00een top 3 limbaje folosite [&hellip;]<\/p>\n","protected":false},"author":12,"featured_media":45603,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[182,437],"tags":[],"class_list":["post-45600","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cariera-it","category-tehnologie-ro"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.4 (Yoast SEO v24.4) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>SQL: totul despre programarea SQL pentru \u00eencep\u0103tori - Codecool<\/title>\n<meta name=\"description\" content=\"Vrei s\u0103 \u00eenve\u021bi SQL \u0219i s\u0103 lucrezi cu baze de date? 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